The document discusses different types of system models used in requirements engineering, including context models, behavioral models, data models, and object models. It provides examples of each type of model, such as a data flow diagram of an order processing system and a state diagram for a microwave oven. The objectives are to explain why system context should be modeled, describe different modeling notations and perspectives, and discuss how computer-aided software engineering tools can support system modeling.
The document discusses key aspects of the software design process including that design is iterative and represented at a high level of abstraction, guidelines for quality design include modularity, information hiding, and functional independence, and architectural design defines system context and archetypes that compose the system.
System Models in Software Engineering SE7koolkampus
The document discusses various types of system models used in requirements engineering including context models, behavioral models, data models, object models, and how CASE workbenches support system modeling. It describes behavioral models like data flow diagrams and state machine models, data models like entity-relationship diagrams, and object models using the Unified Modeling Language. CASE tools can support modeling through features like diagram editors, repositories, and code generation.
The document discusses operating system design and implementation. It outlines design goals for an operating system including user goals like ease of use and reliability, and system goals which depend on the environment. Implementation is discussed, noting traditionally assembly was used but modern operating systems often use high-level languages like C and C++ due to advantages in development speed, portability and understandability, though assembly is still sometimes used for performance critical routines. Memory management and CPU scheduling are highlighted as important parts of implementation.
The document discusses software measurement and metrics. It defines software measurement as quantifying attributes of software products and processes. Metrics are used to measure software quality levels. There are different types of metrics including product, process, and project metrics. Common software metrics include lines of code, function points, and complexity measures. Metrics should be quantitative, understandable, repeatable, and economical to compute.
UML (Unified Modeling Language) is a standard modeling language used to visualize, specify, construct, and document software systems. It uses graphical notation to depict systems from initial design through detailed design. Common UML diagram types include use case diagrams, class diagrams, sequence diagrams, activity diagrams, and state machine diagrams. UML provides a standard way to communicate designs across development teams and is supported by many modeling tools.
UML (Unified Modeling Language) is a standard modeling language used to specify, visualize, and document software systems. It uses graphical notations to model structural and behavioral aspects of a system. Common UML diagram types include use case diagrams, class diagrams, sequence diagrams, and state diagrams. Use case diagrams model user interactions, class diagrams show system entities and relationships, sequence diagrams visualize object interactions over time, and state diagrams depict object states and transitions. UML aims to simplify the complex process of software design through standardized modeling.
This document provides an overview of system modeling. It discusses that system modeling involves developing abstract models of a system from different perspectives, and is commonly done using the Unified Modeling Language (UML). It also describes various UML diagram types used in system modeling like use case diagrams, class diagrams, and state diagrams. Finally, it gives examples of modeling different views of a mental health case management system, including contextual models, interaction models, structural models, and behavioral models.
This document describes the key elements of activity diagrams including activities, transitions, guard conditions, decisions, concurrency, and notations. Activities represent steps in a process, transitions connect activities, and guard conditions restrict transitions. Decisions can involve simple true/false tests or choices between options. Activity diagrams can also model the synchronization of concurrent activities and splitting of process flow.
The document discusses key aspects of the software design process including that design is iterative and represented at a high level of abstraction, guidelines for quality design include modularity, information hiding, and functional independence, and architectural design defines system context and archetypes that compose the system.
System Models in Software Engineering SE7koolkampus
The document discusses various types of system models used in requirements engineering including context models, behavioral models, data models, object models, and how CASE workbenches support system modeling. It describes behavioral models like data flow diagrams and state machine models, data models like entity-relationship diagrams, and object models using the Unified Modeling Language. CASE tools can support modeling through features like diagram editors, repositories, and code generation.
The document discusses operating system design and implementation. It outlines design goals for an operating system including user goals like ease of use and reliability, and system goals which depend on the environment. Implementation is discussed, noting traditionally assembly was used but modern operating systems often use high-level languages like C and C++ due to advantages in development speed, portability and understandability, though assembly is still sometimes used for performance critical routines. Memory management and CPU scheduling are highlighted as important parts of implementation.
The document discusses software measurement and metrics. It defines software measurement as quantifying attributes of software products and processes. Metrics are used to measure software quality levels. There are different types of metrics including product, process, and project metrics. Common software metrics include lines of code, function points, and complexity measures. Metrics should be quantitative, understandable, repeatable, and economical to compute.
UML (Unified Modeling Language) is a standard modeling language used to visualize, specify, construct, and document software systems. It uses graphical notation to depict systems from initial design through detailed design. Common UML diagram types include use case diagrams, class diagrams, sequence diagrams, activity diagrams, and state machine diagrams. UML provides a standard way to communicate designs across development teams and is supported by many modeling tools.
UML (Unified Modeling Language) is a standard modeling language used to specify, visualize, and document software systems. It uses graphical notations to model structural and behavioral aspects of a system. Common UML diagram types include use case diagrams, class diagrams, sequence diagrams, and state diagrams. Use case diagrams model user interactions, class diagrams show system entities and relationships, sequence diagrams visualize object interactions over time, and state diagrams depict object states and transitions. UML aims to simplify the complex process of software design through standardized modeling.
This document provides an overview of system modeling. It discusses that system modeling involves developing abstract models of a system from different perspectives, and is commonly done using the Unified Modeling Language (UML). It also describes various UML diagram types used in system modeling like use case diagrams, class diagrams, and state diagrams. Finally, it gives examples of modeling different views of a mental health case management system, including contextual models, interaction models, structural models, and behavioral models.
This document describes the key elements of activity diagrams including activities, transitions, guard conditions, decisions, concurrency, and notations. Activities represent steps in a process, transitions connect activities, and guard conditions restrict transitions. Decisions can involve simple true/false tests or choices between options. Activity diagrams can also model the synchronization of concurrent activities and splitting of process flow.
Deadlock occurs when two or more processes are waiting for resources held by each other in a circular chain, resulting in none of the processes making progress. There are four conditions required for deadlock: mutual exclusion, hold and wait, no preemption, and circular wait. Deadlock can be addressed through prevention, avoidance, detection, or recovery methods. Prevention aims to eliminate one of the four conditions, while avoidance techniques like the safe state model and Banker's Algorithm guarantee a safe allocation order to avoid circular waits.
This document provides an overview of UML class diagrams, including their purpose and essential elements. A UML class diagram visually describes the structure of a system by showing classes, attributes, operations, and relationships. Key elements include classes, associations, generalization, dependencies, and notes. The document also provides examples and tips for creating UML class diagrams.
An operating system provides an environment for program execution, input/output operations, file system manipulation, communications, and error detection. It loads programs into memory, allows programs to end execution normally or abnormally, enables input/output access to files and devices that users cannot directly control, permits programs to read, write, create and delete files, and facilitates communication between processes on the same or different systems. The operating system also monitors for errors in hardware, devices, and programs to take appropriate corrective actions.
The document discusses verification and validation (V&V) in software engineering. It defines verification as ensuring a product is built correctly, and validation as ensuring the right product is built. V&V aims to discover defects and assess if a system is usable. Static and dynamic verification methods are covered, including inspections, testing, and automated analysis. The document outlines V&V goals, the debugging process, V-model development, test planning, and inspection techniques.
UML (Unified Modeling Language) is a diagramming language used for object-oriented programming. It can be used to describe the organization, execution, use, and deployment of a program. UML uses graphical notation to provide an overall view of a system, and is not dependent on any one programming language. There are several types of UML diagrams including class, component, deployment, object, package, and use case diagrams. Structure diagrams show objects in a system, while behavioral diagrams show how objects interact. Common diagrams include class, use case, activity, state machine, sequence, and communication diagrams.
Rumbaugh's Object Modeling Technique (OMT) is an object-oriented analysis and design methodology. It uses three main modeling approaches: object models, dynamic models, and functional models. The object model defines the structure of objects in the system through class diagrams. The dynamic model describes object behavior over time using state diagrams and event flow diagrams. The functional model represents system processes and data flow using data flow diagrams.
This Presentation is for Memory Management in Operating System (OS). This Presentation describes the basic need for the Memory Management in our OS and its various Techniques like Swapping, Fragmentation, Paging and Segmentation.
The document discusses use case diagrams in UML modeling. It defines key components of use case diagrams including use cases, actors, the system boundary, and relationships like include, extend, and generalization. It provides examples of how to construct a use case diagram based on system functions and user goals. Specific use case diagram examples shown include an online ordering system and a vending machine.
GIve differences in 4 unique and basic terms of UML, classification , definitions ,frameworks. understandable through diagrams. Some similarities / Trade-off are also for more detailed knowledge.
CORBA allows software components written in different languages and running on different machines to communicate. It defines IDL for language-neutral interfaces and an ORB that handles remote requests between clients and servers transparently. The presentation discusses CORBA concepts and architecture, including components like IDL, ORB, object adapters, and the interface repository that enable communication across heterogeneous systems.
Unit testing involves writing code to test individual units or components of an application to ensure they operate as expected. Unit tests act as specifications for code and help produce better, more readable and maintainable code. An effective unit test has one test class per code class, runs tests in isolation, has clear and descriptive names from a user perspective, and asserts a single outcome per test. Tools like mocking frameworks can help with unit testing by injecting dependencies and states. Unit tests should focus on testing logic and not user interfaces.
This document discusses object-oriented analysis and design (OOAD) requirements. It covers what requirements are, which include statements describing what a proposed system must do or constraints on its development. Requirements must contribute to solving the customer's problem and be agreed upon by stakeholders. Requirements can be functional, describing what the system should do, or non-functional, describing quality, performance, design, platform, and process constraints. Examples of functional requirements include system inputs/outputs and computations. Non-functional requirements constrain the system's quality, performance, design, environment, and development process.
This is the presentation describing different techniques used to write test cases for software testing. You can have overview with detailed example for test case techniques. After reading this, You'll able to assume which technique can be more useful to you software testing.
Verification and Validation in Software Engineering SE19koolkampus
The document introduces software verification and validation (V&V) and discusses key techniques used in the V&V process, including inspections, static analysis, and the Cleanroom development process. It defines verification as ensuring a product is built correctly and validation as ensuring the right product is built. V&V aims to find defects and assess usability, applying techniques from requirements through deployment. Inspections and static analysis complement testing by checking static representations, while testing checks dynamic behavior. The Cleanroom process uses formal specification, incremental development, and statistical testing with reliability models.
The document discusses debugging processes. It begins by defining debugging as finding and correcting software errors uncovered during testing. The debugging process involves executing test cases, assessing results for discrepancies between expected and actual performance, and attempting to find the cause through iterative testing and corrections. There are generally three debugging approaches: brute force using extensive logging, backtracking by tracing code backwards from symptoms, and cause elimination using binary partitioning to isolate potential error causes.
Black-box testing is a method of software testing that examines the functionality of an application based on the specifications.
White box testing is a testing technique, that examines the program structure and derives test data from the program logic/code
White box testing involves testing internal program structure and code. It includes static testing like code reviews and structural testing like unit testing. Static testing checks code against requirements without executing. Structural testing executes code to test paths and conditions. Code coverage metrics like statement coverage measure what code is executed by tests. Code complexity metrics like cyclomatic complexity quantify complexity to determine necessary test cases. White box testing finds defects from incorrect code but may miss realistic errors and developers can overlook own code issues.
The document discusses requirements engineering processes. It describes the main activities as feasibility studies to determine if a project is worthwhile, elicitation and analysis to discover requirements, specification to formalize requirements, and validation to check requirements. It discusses techniques for eliciting requirements including interviews, scenarios, use cases and viewpoints to represent different stakeholder perspectives. The goal is to create and maintain requirements documents through these iterative processes.
UML (Unified Modeling Language) is a standard language for specifying, visualizing, and documenting software systems. It uses various diagrams to model different views of a system, such as structural diagrams (e.g. class diagrams), behavioral diagrams (e.g. sequence diagrams), and deployment diagrams. The key building blocks of UML include things (classes, interfaces, use cases), relationships (associations, generalizations), and diagrams. UML aims to provide a clear blueprint of software systems for both technical and non-technical audiences.
The chapter discusses system models which provide abstract descriptions of systems being analyzed. It covers context models, behavioral models such as data flow diagrams and state machine diagrams, data models, and object models. These different types of models present the system from external, behavioral, and structural perspectives. The chapter also introduces Unified Modeling Language notations and how computer-aided software engineering workbenches support system modeling.
The document discusses system modeling techniques used in requirements engineering and software design. It describes different types of models like context models, behavioral models, data models, object models and how they are used to represent a system from different perspectives. Specific modeling notations like data flow diagrams, state machines, class diagrams are explained. The role of tools and modeling methods is also covered.
Deadlock occurs when two or more processes are waiting for resources held by each other in a circular chain, resulting in none of the processes making progress. There are four conditions required for deadlock: mutual exclusion, hold and wait, no preemption, and circular wait. Deadlock can be addressed through prevention, avoidance, detection, or recovery methods. Prevention aims to eliminate one of the four conditions, while avoidance techniques like the safe state model and Banker's Algorithm guarantee a safe allocation order to avoid circular waits.
This document provides an overview of UML class diagrams, including their purpose and essential elements. A UML class diagram visually describes the structure of a system by showing classes, attributes, operations, and relationships. Key elements include classes, associations, generalization, dependencies, and notes. The document also provides examples and tips for creating UML class diagrams.
An operating system provides an environment for program execution, input/output operations, file system manipulation, communications, and error detection. It loads programs into memory, allows programs to end execution normally or abnormally, enables input/output access to files and devices that users cannot directly control, permits programs to read, write, create and delete files, and facilitates communication between processes on the same or different systems. The operating system also monitors for errors in hardware, devices, and programs to take appropriate corrective actions.
The document discusses verification and validation (V&V) in software engineering. It defines verification as ensuring a product is built correctly, and validation as ensuring the right product is built. V&V aims to discover defects and assess if a system is usable. Static and dynamic verification methods are covered, including inspections, testing, and automated analysis. The document outlines V&V goals, the debugging process, V-model development, test planning, and inspection techniques.
UML (Unified Modeling Language) is a diagramming language used for object-oriented programming. It can be used to describe the organization, execution, use, and deployment of a program. UML uses graphical notation to provide an overall view of a system, and is not dependent on any one programming language. There are several types of UML diagrams including class, component, deployment, object, package, and use case diagrams. Structure diagrams show objects in a system, while behavioral diagrams show how objects interact. Common diagrams include class, use case, activity, state machine, sequence, and communication diagrams.
Rumbaugh's Object Modeling Technique (OMT) is an object-oriented analysis and design methodology. It uses three main modeling approaches: object models, dynamic models, and functional models. The object model defines the structure of objects in the system through class diagrams. The dynamic model describes object behavior over time using state diagrams and event flow diagrams. The functional model represents system processes and data flow using data flow diagrams.
This Presentation is for Memory Management in Operating System (OS). This Presentation describes the basic need for the Memory Management in our OS and its various Techniques like Swapping, Fragmentation, Paging and Segmentation.
The document discusses use case diagrams in UML modeling. It defines key components of use case diagrams including use cases, actors, the system boundary, and relationships like include, extend, and generalization. It provides examples of how to construct a use case diagram based on system functions and user goals. Specific use case diagram examples shown include an online ordering system and a vending machine.
GIve differences in 4 unique and basic terms of UML, classification , definitions ,frameworks. understandable through diagrams. Some similarities / Trade-off are also for more detailed knowledge.
CORBA allows software components written in different languages and running on different machines to communicate. It defines IDL for language-neutral interfaces and an ORB that handles remote requests between clients and servers transparently. The presentation discusses CORBA concepts and architecture, including components like IDL, ORB, object adapters, and the interface repository that enable communication across heterogeneous systems.
Unit testing involves writing code to test individual units or components of an application to ensure they operate as expected. Unit tests act as specifications for code and help produce better, more readable and maintainable code. An effective unit test has one test class per code class, runs tests in isolation, has clear and descriptive names from a user perspective, and asserts a single outcome per test. Tools like mocking frameworks can help with unit testing by injecting dependencies and states. Unit tests should focus on testing logic and not user interfaces.
This document discusses object-oriented analysis and design (OOAD) requirements. It covers what requirements are, which include statements describing what a proposed system must do or constraints on its development. Requirements must contribute to solving the customer's problem and be agreed upon by stakeholders. Requirements can be functional, describing what the system should do, or non-functional, describing quality, performance, design, platform, and process constraints. Examples of functional requirements include system inputs/outputs and computations. Non-functional requirements constrain the system's quality, performance, design, environment, and development process.
This is the presentation describing different techniques used to write test cases for software testing. You can have overview with detailed example for test case techniques. After reading this, You'll able to assume which technique can be more useful to you software testing.
Verification and Validation in Software Engineering SE19koolkampus
The document introduces software verification and validation (V&V) and discusses key techniques used in the V&V process, including inspections, static analysis, and the Cleanroom development process. It defines verification as ensuring a product is built correctly and validation as ensuring the right product is built. V&V aims to find defects and assess usability, applying techniques from requirements through deployment. Inspections and static analysis complement testing by checking static representations, while testing checks dynamic behavior. The Cleanroom process uses formal specification, incremental development, and statistical testing with reliability models.
The document discusses debugging processes. It begins by defining debugging as finding and correcting software errors uncovered during testing. The debugging process involves executing test cases, assessing results for discrepancies between expected and actual performance, and attempting to find the cause through iterative testing and corrections. There are generally three debugging approaches: brute force using extensive logging, backtracking by tracing code backwards from symptoms, and cause elimination using binary partitioning to isolate potential error causes.
Black-box testing is a method of software testing that examines the functionality of an application based on the specifications.
White box testing is a testing technique, that examines the program structure and derives test data from the program logic/code
White box testing involves testing internal program structure and code. It includes static testing like code reviews and structural testing like unit testing. Static testing checks code against requirements without executing. Structural testing executes code to test paths and conditions. Code coverage metrics like statement coverage measure what code is executed by tests. Code complexity metrics like cyclomatic complexity quantify complexity to determine necessary test cases. White box testing finds defects from incorrect code but may miss realistic errors and developers can overlook own code issues.
The document discusses requirements engineering processes. It describes the main activities as feasibility studies to determine if a project is worthwhile, elicitation and analysis to discover requirements, specification to formalize requirements, and validation to check requirements. It discusses techniques for eliciting requirements including interviews, scenarios, use cases and viewpoints to represent different stakeholder perspectives. The goal is to create and maintain requirements documents through these iterative processes.
UML (Unified Modeling Language) is a standard language for specifying, visualizing, and documenting software systems. It uses various diagrams to model different views of a system, such as structural diagrams (e.g. class diagrams), behavioral diagrams (e.g. sequence diagrams), and deployment diagrams. The key building blocks of UML include things (classes, interfaces, use cases), relationships (associations, generalizations), and diagrams. UML aims to provide a clear blueprint of software systems for both technical and non-technical audiences.
The chapter discusses system models which provide abstract descriptions of systems being analyzed. It covers context models, behavioral models such as data flow diagrams and state machine diagrams, data models, and object models. These different types of models present the system from external, behavioral, and structural perspectives. The chapter also introduces Unified Modeling Language notations and how computer-aided software engineering workbenches support system modeling.
The document discusses system modeling techniques used in requirements engineering and software design. It describes different types of models like context models, behavioral models, data models, object models and how they are used to represent a system from different perspectives. Specific modeling notations like data flow diagrams, state machines, class diagrams are explained. The role of tools and modeling methods is also covered.
This document discusses architectural design and software architecture. It covers topics like architectural design decisions, system organization styles, decomposition styles, control styles, and reference architectures. The objectives are to introduce architectural design, explain important decisions, and discuss styles for organizing, decomposing, and controlling systems. Examples and characteristics of different architectural patterns are provided.
System models abstractly describe systems being analyzed and are used to communicate with customers. Different models show the system from external, behavioral, and structural perspectives. Common system models include context models depicting system boundaries, data flow diagrams modeling data processing, state machine models representing system states and transitions, and object models describing the system in terms of object classes and relationships. The Unified Modeling Language provides standard notations for object-oriented modeling.
UML was developed to standardize object-oriented modeling notations. It consolidated techniques like OMT, OOSE, and the Booch Methodology. UML provides multiple views (diagrams) to model a system, including structural, behavioral, implementation, and environmental views. Common UML diagrams are use case diagrams, which model functionality from the user's perspective, and class diagrams, which show system structure.
This document discusses architectural design in software engineering. It covers topics like architectural design decisions, system organization styles, decomposition styles, and reference architectures. The objectives are to introduce architectural design and discuss its importance, explain design decisions that must be made, and introduce three common architectural styles for organization, decomposition, and control. Architectural design represents an early stage of system design and links requirements to detailed design. It involves identifying major components and their interactions.
The slides provided herein encapsulate the foundational principles and intricacies of Architectural Design as delineated within the esteemed tome, "Software Engineering," authored by Ian Sommerville in its seventh edition. This comprehensive compendium serves as a beacon, guiding students and practitioners alike through the labyrinthine landscape of software architecture, imparting a nuanced understanding of its theoretical underpinnings and practical applications. Each slide meticulously curated to elucidate key concepts, methodologies, and best practices, fostering an environment conducive to robust comprehension and proficiency attainment. It is within this pedagogical framework that learners embark upon a transformative journey, transcending mere acquaintance to achieve mastery in the domain of Architectural Design.
The slides provided herein encapsulate the foundational principles and intricacies of Architectural Design as delineated within the esteemed tome, "Software Engineering," authored by Ian Sommerville in its seventh edition. This comprehensive compendium serves as a beacon, guiding students and practitioners alike through the labyrinthine landscape of software architecture, imparting a nuanced understanding of its theoretical underpinnings and practical applications. Each slide meticulously curated to elucidate key concepts, methodologies, and best practices, fostering an environment conducive to robust comprehension and proficiency attainment. It is within this pedagogical framework that learners embark upon a transformative journey, transcending mere acquaintance to achieve mastery in the domain of Architectural Design.
The document discusses object-oriented design (OOD) and describes the OOD process. It explains that OOD involves developing a system model using interacting objects that manage their own state and operations. The document outlines the OOD process, which includes defining the system context and modes of use, designing the system architecture, identifying principal system objects, developing design models, and specifying object interfaces. It provides examples from a weather mapping system to illustrate OOD concepts and models.
Workshop on Basics of Software Engineering (DFD, UML and Project Culture)Dr Sukhpal Singh Gill
Three days workshop on Basics of Software Engineering at Thapar University, Patiala on 7th-9th, 2013. Workshop on Basics of Software Engineering (DFD, UML and Project Culture)
UML (Unified Modeling Language) is a standard language for modeling software systems. It provides notation for visualizing, specifying, constructing and documenting software artifacts. The key components of UML include classes, attributes, operations, relationships, and diagrams. Common UML diagrams are use case diagrams, class diagrams, sequence diagrams, and deployment diagrams. UML is widely used for object-oriented analysis and design. It helps model the problem domain, visualize the system design, and document implementation.
The document discusses system modeling as part of the requirements engineering process. It describes different types of models used to represent systems, including context models, behavioral models, data models, and object models. Specific modeling notations are introduced, such as data flow diagrams, state machines, and entity-relationship diagrams. Examples are provided to illustrate modeling concepts for systems like an ATM, order processing, and a microwave oven. The goal of system modeling is to help analysts understand system functionality from different perspectives to communicate requirements.
The document discusses different types of system models used in requirements engineering including context models, behavioral models, data models, and object models. It describes modeling the system's behavior using data flow diagrams and state machine diagrams. The document also introduces the Unified Modeling Language (UML) and how computer-aided software engineering (CASE) tools can support system modeling.
The document discusses different types of system models used in requirements engineering including context models, behavioral models, data models, and object models. It describes modeling the system's context, data processing, behavior in response to events, logical data structure, and objects. The document also introduces the Unified Modeling Language (UML) and how computer-aided software engineering (CASE) workbenches support system modeling.
This document discusses design and implementation in software engineering. It covers object-oriented design using the Unified Modeling Language (UML), implementation issues such as reuse and configuration management, and open source development. Specifically, it provides examples and diagrams for the design of a weather station system, including use cases, classes, interfaces, and state diagrams. It emphasizes that design is an iterative process involving modeling the system context, architecture, objects, and their interactions.
This document provides an overview of topics covered in Chapter 7 on software design and implementation, including object-oriented design using UML, design patterns, implementation issues, and open source development. It discusses the design and implementation process, build vs buy approaches, object-oriented design processes involving system models, and key activities like defining system context, identifying objects and interfaces. Specific examples are provided for designing a wilderness weather station system.
IRJET- Use of Simulation in Different Phases of Manufacturing System Life CycleIRJET Journal
This document discusses the use of simulation throughout the manufacturing system life cycle, from conceptual design to operations planning. It provides examples of how simulation can be used to design modular assembly systems and optimize production capacity and operations planning. The key benefits of simulation include shortened design time, improved system design quality, faster sales cycles, and better training of personnel. Simulation allows experimenting with different configurations before implementing real systems and helps identify bottlenecks and optimize performance.
07. MTE - Studi Kasus Pemodelan Sistem.pptxAsalReview
The document discusses two case studies of system modeling: an ATM system and an embedded system for platform stabilization.
For the ATM system case study, it summarizes the objectives of modeling the system using UML, including class, interaction, activity, and use case diagrams. It provides examples of each diagram type.
For the embedded system case study, it discusses using UML/COMET modeling for requirements and analysis of a control system. It shows the use case, class, collaboration, and state diagrams developed.
Both case studies demonstrate how UML can be used to effectively model systems and analyze requirements. Examples of different UML diagram types are provided for each case study.
This document discusses system modeling. It defines system modeling as developing abstract models of a system from different perspectives. Common modeling techniques discussed include context models, interaction models, structural models, behavioral models, and model-driven engineering. Specific modeling languages covered are activity diagrams, use case diagrams, sequence diagrams, class diagrams, and state diagrams. The document provides examples and definitions for how to apply these modeling approaches and languages.
The document discusses Unified Modeling Language (UML) and how it can be used for systems analysis and design. It provides an overview of UML, including its history and key diagrams. There are 14 diagrams grouped into structure diagrams and behavior diagrams. Structure diagrams represent static elements like classes and relationships, while behavior diagrams depict dynamic elements like interactions and states. The document outlines several UML processes, with common steps including creating use case, activity, sequence, and class diagrams to analyze business needs and design system structure. UML provides standard modeling notation but must be part of a defined development process to be effective.
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...IJECEIAES
Climate change's impact on the planet forced the United Nations and governments to promote green energies and electric transportation. The deployments of photovoltaic (PV) and electric vehicle (EV) systems gained stronger momentum due to their numerous advantages over fossil fuel types. The advantages go beyond sustainability to reach financial support and stability. The work in this paper introduces the hybrid system between PV and EV to support industrial and commercial plants. This paper covers the theoretical framework of the proposed hybrid system including the required equation to complete the cost analysis when PV and EV are present. In addition, the proposed design diagram which sets the priorities and requirements of the system is presented. The proposed approach allows setup to advance their power stability, especially during power outages. The presented information supports researchers and plant owners to complete the necessary analysis while promoting the deployment of clean energy. The result of a case study that represents a dairy milk farmer supports the theoretical works and highlights its advanced benefits to existing plants. The short return on investment of the proposed approach supports the paper's novelty approach for the sustainable electrical system. In addition, the proposed system allows for an isolated power setup without the need for a transmission line which enhances the safety of the electrical network
An improved modulation technique suitable for a three level flying capacitor ...IJECEIAES
This research paper introduces an innovative modulation technique for controlling a 3-level flying capacitor multilevel inverter (FCMLI), aiming to streamline the modulation process in contrast to conventional methods. The proposed
simplified modulation technique paves the way for more straightforward and
efficient control of multilevel inverters, enabling their widespread adoption and
integration into modern power electronic systems. Through the amalgamation of
sinusoidal pulse width modulation (SPWM) with a high-frequency square wave
pulse, this controlling technique attains energy equilibrium across the coupling
capacitor. The modulation scheme incorporates a simplified switching pattern
and a decreased count of voltage references, thereby simplifying the control
algorithm.
Advanced control scheme of doubly fed induction generator for wind turbine us...IJECEIAES
This paper describes a speed control device for generating electrical energy on an electricity network based on the doubly fed induction generator (DFIG) used for wind power conversion systems. At first, a double-fed induction generator model was constructed. A control law is formulated to govern the flow of energy between the stator of a DFIG and the energy network using three types of controllers: proportional integral (PI), sliding mode controller (SMC) and second order sliding mode controller (SOSMC). Their different results in terms of power reference tracking, reaction to unexpected speed fluctuations, sensitivity to perturbations, and resilience against machine parameter alterations are compared. MATLAB/Simulink was used to conduct the simulations for the preceding study. Multiple simulations have shown very satisfying results, and the investigations demonstrate the efficacy and power-enhancing capabilities of the suggested control system.
Design and optimization of ion propulsion dronebjmsejournal
Electric propulsion technology is widely used in many kinds of vehicles in recent years, and aircrafts are no exception. Technically, UAVs are electrically propelled but tend to produce a significant amount of noise and vibrations. Ion propulsion technology for drones is a potential solution to this problem. Ion propulsion technology is proven to be feasible in the earth’s atmosphere. The study presented in this article shows the design of EHD thrusters and power supply for ion propulsion drones along with performance optimization of high-voltage power supply for endurance in earth’s atmosphere.