ABSTRACT
The preceding chapters deal with basic feedback control systems composed of the minimum equipment required to perform the control function and the necessary sensors and comparators to provide feedback. The designer first analyzes the performance of the basic system. This chapter presents methods of improving the design of a control system. To increase the reader’s understanding of how poles and zeros affect the time response, a graphical means is presented for calculating the figures of merit of the system and the effect of additional significant nondominant poles. Typical pole-zero patterns are employed to demonstrate the correlation between the pole-zero diagram and the frequency and time responses. As a result of this analysis, the control system may be modified to achieve the desired time response. The remaining chapters are devoted to achieving the necessary refinements.
