Chapter 10
Cascade and Feedforward Control
The objective of this chapter is to develop feedforward- and cascade-control system design procedures. The emphasis of both of these strategies is on rejecting disturbances. After studying this chapter, the reader should be able to
Given an instrumentation diagram for a cascade-control strategy, develop the corresponding control block diagram using either a series or parallel structure.
Tune cascade controllers; tune the secondary loop first; then tune the primary controller with the secondary loop closed.
Given an instrumentation diagram for feedforward/feedback control, develop the corresponding control block diagram.
Develop the closed-loop transfer functions for feedforward/feedback control.
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