Advanced Modern Control System Theory and Design by Stanley M. Shinners

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CONTROL-SYSTEM DESIGN EXAMPLES: COMPLETE CASE STUDIES

7.1. INTRODUCTION

In the preceding chapters of this book, we have analyzed and designed control systems from specific viewpoints. For example, the Nyquist and Bode diagrams and the root-locus method were applied to linear control systems in Chapter 1, and Chapters 2 and 3, and extended to digital control systems in Chapter 4. The describing function, phase-plane, circle criterion, Liapunov's and Popov's methods were applied to the analysis and design of nonlinear control systems in Chapter 5. How do we take a global viewpoint of a control-system design problem and look at it from both linear and nonlinear viewpoints? We must also consider reliability, cost size, weight, and power consumption. We must design a working control system that meets all the specifications, that can be sold at a profit, that can be built on schedule, and that satisfies the customer's requirements.

In this chapter on complete case studies, we will employ the methods of the preceding chapters to design the following:

1. Design for the positioning system of a tracking radar which illustrates both linear and nonlinear design considerations jointly.
2. Design of the angular control system for a robot's joint.
3. State-variable design for the controller and full-order estimator for a space satellite.
4. Digital control system design for a microcomputer-controlled temperature control system.
5. Robust control system design for controlling the flaps of a hydrofoil.

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