LINAC 4 – Control System Design (small)
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This document discusses the control system design for LINAC 4, including a klystron model with error rates of 5.3% and 3.84%, and a PIMS cavity model with parameters like impedance and quality factor. It presents a Smith predictor design using a process model with 10% error and delay estimation to compensate for the 1100ns total loop delay. Simulation results are shown comparing closed loop responses with and without feedforward compensation for beam disturbances.
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This document discusses the generation and control of transient overvoltages in power system networks. It begins by explaining that capacitor bank switching is a major cause of transient overvoltages and inrush currents. It then analyzes different techniques for mitigating these issues, including using pre-insertion resistors, current limiting reactors, and surge arresters. Through MATLAB simulations, it evaluates the effectiveness of each method at reducing peak transient voltages and currents. The surge arrester technique produced the best results, lowering transient overvoltages to 0.64 p.u. and inrush currents to 0.794 kA when connected phase to neutral at the capacitor bank. In conclusion, controlling transients through various techniques can improve power quality and distribution system performance
Tennessee State University College of Engineering, Tec.docx
Tennessee State University
College of Engineering, Technology, and Computer Science
Department of Electrical and Computer Engineering
ENGR 2001
CIRCUITS I LAB
Section 01
Lab 1
Low Pass/High Pass Filters
Transient and AC Analysis
Beyonce Smith
Lab Partner: Will Knowles
Instructor: Dr. Carlotta A. Berry
Lab Performed: October 16, 2000
Report Submitted: October 23, 2000
2
ABSTRACT
The purpose of this experiment was to design a high pass and low pass filter that
attenuates a 1 kHz signal by 20 db. Test and evaluate this circuit built in a laboratory to
determine how closely actual values correlate to theoretical values. Part of this analysis
will include observing the transient and AC characteristics by using an oscilloscope,
digital multimeter and function generator. The theory used to design this filter included
Ohm’s law, the voltage divider rule and Laplace transforms. The results were shown to
correlate closely with the theoretical values and therefore were assumed to be
significant.
3
TABLE OF CONTENTS
Abstract
I. Objective
II. Theory
III. Equipment
IV. Apparatus
V. Circuits
VI. Procedure
VII. Graphs
VIII. Results, Conclusions, and Recommendations
Appendix A Data
Appendix B Formulas and Sample Calculations
Appendix C References and Laboratory Instruction Sheet
4
I. Objective:
The purpose of this experiment was to explore the behavior of a low pass filter
and high pass filter over a range of frequencies with a given break frequency.
II. Theory:
A filter is a device that attenuates a range of frequencies and passes a range of
frequencies. There are several types of filters including low pass, high pass,
band pass and band reject. The range of frequencies that are passed by a filter
are called the pass band. The frequency where the relationship between input
and output is equal to .707 is called the break frequency or half power point. An
example of a high pass filter would be a tweeter on a speaker in a car. An
example of a low pass filter would be the bass from a speaker in a car. An
example of a band pass filter would be the selector for a radio station. In this
experiment the low pass and high pass filter will be explored. Equation (1) is the
transfer function relationship for the high pass filter. Equation (2) is the low pass
transfer function for the low pass filter.
H(S) =
sRC
sRC
sV
sV
i
o
1)(
)(
(1)
H(s) =
sRCsV
sV
i
o
1
1
)(
)(
(2)
III. Equipment:
Breadboard
Wire leads
Digital Oscilloscope
Digital Multimeter
Function Generator
Power Supply
Resistors (1 k, 5 k)
Capacitors (.01 F, 1 F)
741 Op-amp
IV. Apparatus:
The apparatus used to measure the transient and AC response of a circuit
includes the breadboard with the resistor and capacitor positioned for a low pass
or high pass filter, ...
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- 5. PIMS Cavity: ZTT = 24.622e6 Ω/m L = 1.298 m Q0 = 20800 β = 1.24 Φ = ‐20° Z0 = 50 Ω Psat = 1.4 MW Beam current: 40 mA Cavity voltage: 4.805 MV Power loss: 5% Parameters Controller structure: , where, , and, 1+aτs KP 1+τs Τ = KP KI a = 10
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