Frequency Domain Analysis
摘要
In this chapter we present frequency domain analysisFrequency domain analysis methods for both single-input–single-output and multi-input–multi-output control systems. Transfer function matricesTransfer functionmatrix, Nyquist theory for multivariable systems, and singular value frequency response methods are discussed in detail. Modeling techniques for robust stability analysis are discussed in which both complex and real parametric uncertainties are covered. Theory and examples for the structured singular valueStructured singular value \(\mu\) and the real stability marginReal stability margin are presented. Flight control systems designed using both classical and optimal control theories are analyzed to demonstrate how to determine their robust stability.