design_inclass - Improving System Performance Ideal...

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Unformatted text preview: Improving System Performance Ideal Integral Compensation (PI) Lag Compensation Ideal Derivative Compensation (PD) Lead Compensation PID Controller Design Feedback Compensation Physical Realization of Compensation Unit 8: Design via Root Locus Engineering 5821: Control Systems I Faculty of Engineering & Applied Science Memorial University of Newfoundland March 30, 2009 ENGI 5821 Unit 8: Design via Root Locus Improving System Performance Ideal Integral Compensation (PI) Lag Compensation Ideal Derivative Compensation (PD) Lead Compensation PID Controller Design Feedback Compensation Physical Realization of Compensation 1 Improving System Performance 1 Ideal Integral Compensation (PI) 1 Lag Compensation 1 Ideal Derivative Compensation (PD) 1 Lead Compensation 1 PID Controller Design 1 Feedback Compensation 1 Physical Realization of Compensation ENGI 5821 Unit 8: Design via Root Locus Improving System Performance Fundamentally, we wish to improve the performance of our systems in terms of the principal control systems design criteria: transient response, steady-state error, and stability. Improving System Performance Fundamentally, we wish to improve the performance of our systems in terms of the principal control systems design criteria: transient response, steady-state error, and stability. We saw in the Steady-State Error unit that the addition of integration (1 / s trans. function) into the forward path can reduce finite SS error to zero. Improving System Performance Fundamentally, we wish to improve the performance of our systems in terms of the principal control systems design criteria: transient response, steady-state error, and stability. We saw in the Steady-State Error unit that the addition of integration (1 / s trans. function) into the forward path can reduce finite SS error to zero. Here we discuss in more detail how to achieve this. We also discuss how to improve transient performance. We also discuss how to improve transient performance. With a given system the only way we have to adjust transient performance is to find a suitable point on the RL. We also discuss how to improve transient performance. With a given system the only way we have to adjust transient performance is to find a suitable point on the RL. Assume we have found point A on the RL below which gives us the desired % OS . We also discuss how to improve transient performance. With a given system the only way we have to adjust transient performance is to find a suitable point on the RL. Assume we have found point A on the RL below which gives us the desired % OS . However, while we are happy with the damping ratio and % OS at A we would prefer the reduced settling time at B . However, while we are happy with the damping ratio and % OS at A we would prefer the reduced settling time at B . However, while we are happy with the damping ratio and % OS at A we would prefer the reduced settling time at B ....
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This note was uploaded on 09/07/2009 for the course ENGINEERIN 5821 taught by Professor Andrewvardy, during the Spring '09 term at Memorial University.

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design_inclass - Improving System Performance Ideal...

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