Chap5 part01a_printed.pdf - DR CHONG SH(BEKC 3533 BEKC 3533...

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DR. CHONG SH (BEKC 3533) SEM 2 – 2015/2016 1 BEKC 3533 | INTRODUCTION TO CONTROL SYSTEM CHAPTER 5: Part 1 Frequency Domain Analysis 1 DR CHONG Dr. Chong Shin Horng Control, Instrumentation & Automation Faculty of Electrical Engineering 5.1 First order Bode Plot 5.2 Second order Bode Plot 5.3 Performance Specification in Frequency Domain DR CHONG 2 Course Roadmap Laplace transform Transfer function Models for systems Mechanical Electrical Electromecha nical Linearization DR CHONG 3 Modeling Time response • Transient Steady state Frequency response Bode plot Stability • Routh- Hurwitz • (Nyquist) Analysis Design spec Root locus Frequency domain PID & Lead-lag Design examples Design Introduction Frequency response methods, developed by Nyquist and Bode in 1930s, are older than root locus method. This technique has distinct advantages in the following situations: 1. When modeling transfer functions from physical data; 2. When designing lead compensation to meet steady-state error requirement and a transient response requirement; 3. When finding the stability of nonlinear systems ; and 4. In settling ambiguities when sketching a root locus. DR CHONG 4
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