Universal Control Law and Rate Feedbacks

S. H. Lam


A common approach to control problems is to look for a static control law through a detailed study of the known mathematical model of the system, assuming that the needed measurements of the state vector are available for closed-loop feedbacks. Recently, this author showed that a special dynamic control law can control a class of systems without the need of detailed knowledge of their mathematical models---provided good quality measured rate data of certain components of the state vector are available. The present paper shows that when additional knowledge beyond the minimum is available, the amount of needed rate data can be reduced. Numerical simulations are presented to elucidate the effects of measurement noises.

Updated December 18, 1998. To be presented as paper #F-2e-02-4 at the 1999 IFAC World Congress. July 5-9, Beijing, China.

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