FEEDFORWARD CONTROL FOR DESCRIPTOR SYSTEM WITH UNMEASURABLE DISTURBANCE

This paper considers feedforward control, both tracking the reference model and rejecting an influence of disturbance, using the full-information approach and sliding mode observer for descriptor system with unmeasurable disturbance which are either nonregular or if it is regular, has impulsive mode. First, for estimating unmeasurable disturbance, fault detection and isolation(FDI) approach using sliding mode observer is applied. Next, with the approximation of disturbance, the feedforward controller is determined by solving a full-information approach for augmented system with a nominal control constraint. To solve this problem, we will transform descriptor system into regular state space system using the output feedback.