EIGENVALUE PLACEMENT IN A SPECIFIED SECTOR FOR VARIABLE STRUCTURE CONTROL-SYSTEMS

The design of the sliding hyperplanes of a variable structure control system is an important part of the controller design process, and will be considered in this paper. The method outlined here results in the eigenvalues of the closed-loop system during sliding lying in a specif ied sector in the left-hand half-plane. Numerical examples are given, and the effect of an arbitrary positive definite matrix in a complex R iccati equation on the positioning of the eigenvalues within the secto r, is investigated.