Design techniques multivariable variable structure control systems

Multivariable variable structure control systems employ non-linear control functions linked with a manifold in the state space in order to obtain desirable robustness and invariance properties in time-varying uncertain control systems. Robust closed-loop control is achieved for a specified range of magnitudes of parameter variations and disturbances. The development of the theory of this class of control systems will be reviewed and particular reference will be made to the eigenstructure assignment approach. The use of a CAD package allows the straightforward design and study of multivariable regulator and model-following systems.