Design of noninteracting control systems using bode diagrams

A systematic design procedure has been developed for noninteracting control of multivariable systems. Unlike previously proposed design techniques, which are mostly based on closed-loop complex-frequency transfer functions, the method described here is based on open-loop real-frequency Bode diagrams — with the advantage that considerations of control specifications, physical realizability, and stability can be included in a simple and straightforward manner. Such simplicity in design is essential for noninteracting control for large realistic systems where digital computational aid is indispensable.