Compensation of sampled-data systems

Abstract

"Compensation of sampled-data systems is straight forward if the compensation network can be separated from the rest of the system by samplers. However, use of directly connected continuous networks presents more of a problem. Existing theory does not adequately cover such compensation. This paper examines the above situation using z-transform theory and continuous network realizability conditions. Lack of a general correlation between the number of z-plane and s-plane zeros presents the major problem. This difficulty becomes apparent when attempting to find a principle Laplace transform for the final system impulse response following z-plane compensation. By imposing certain restrictions on z-plane pole locations and by approximating the desired system impulse response in the s-plane, this paper demonstrates the use of directly connected RC networks in lieu of discrete networks or digital computers for compensating sampled-data systems. Studies are, also, made concerning the requirements necessary to eliminate the need for approximating the final impulse response. Graphs are presented to allow the solution of this problem for third order systems."--Page 1.