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Modeling of physical systems usually results in complex high order dynamic representation. The simulation and design of controller for higher order system is a difficult problem. Normally the cost and complexity of the controller increases with the system order. Hence it is desirable to approximate these models to reduced order model such that these lower order models preserves all salient features of higher order model. Lower order models simplify the understanding of the original higher order system. Modern controller design methods such as Model Matching Technique, LQG produce controllers of order at least equal to that of the plant, usually higher order. These control laws are may be too complex with regards to practical implementation and simpler designs are then sought. For this purpose, one can either reduce the order the plant model prior to controller design, or reduce the controller in the final stage, or both. In the present work, a controller is designed such that the closed loop system which includes a delay response(s) matches with those of the chosen model with same time delay as close as possible. Based on desired model, a controller(of higher order) is designed using model matching method and is approximated to a lower order one using Approximate Generalized Time Moments (AGTM) / Approximate Generalized Markov Moments (AGMM) matching technique and Optimal Pade Approximation technique. Genetic Algorithm (GA) optimization technique is used to obtain the expansion points one which yields similar response as that of model, minimizing the error between the response of the model and that of designed closed loop system.

Ναρκοπέδιο_Εκπαιδευτικό Σενάριο στον Χελωνόκοσμο

Constantina Kotsari

Στίχοι ποιημάτων: το όνειρο / στιγμές εισβολής

Maria Loizou

Create a Strategy for Share Point Migration

AdalineAchani

32 دعاء الأنبياء

Dr. Ali Salem

What (not) to ask users

Hester Bruikman

This document discusses why asking users directly is not always the best approach to understanding user needs and wants. It provides several examples from studies that show users have difficulty accurately reporting on and predicting their own past, current and future behaviors, needs and preferences. The document argues that because of biases like recall bias, focalism and an inability to imagine future contexts, users don't always know what they have done, are doing, will do, want or need. Therefore, relying solely on directly asking users can lead product developers to make incorrect assumptions.

Detecting Irregularities in the Shape of Coloured Bottle

IJERA Editor

Digital image processing is used for various purposes like image enhancement, compression of images. Uncompressed image needs more storage capacity. So the images are compressed. In this research paper we aim to detect the irregularities in the shape of bottle. This paper is to review and study of the different methods of object detection. It includes many methods for the shape recognition. This paper discuss the methods like Robert operator, Sobel Operator, Laplacian and Fourier Descriptor. As we have gone through many research papers it was of mostly detecting mangoes, flower, leaf, face, etc but none was for detecting bottle shape recognition. We also compared accuracy and limitations of these methods and from all the methods we found the best result for fourier descriptor for shape recognition.

Принципы и методы координатной привязки и трансформирование снимков в ГИС-пак...

Deportament international cooperation

The document summarizes job opportunities at the Department of National Parks, Wildlife and Plant Conservation. It lists several available positions, including park ranger, conservation officer, and administrative officer. It provides the job duties, qualifications, and how to apply for each position. The application period closes on September 30, 2022. Interested applicants can find more information on the department's website at www.forest.go.th.

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