Sampled data control of non-linear systems using extended order high gain observer

This paper explores alternative design approaches for sampled data extended order observer. After a brief and necessary review of continuous time Extended order High gain observer (EHGO), two alternative sampled data control approaches are being examined, i.e. approximate discrete equivalent system model and emulation. Extended order observer (EHGO) is designed using both aforementioned techniques. Performance of sampled data extended order observer is analysed by using it in a close loop for above mention approaches.