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Improved discrete-time controller performance using the "control-dimension multiplier effect" of discrete/continuous control theory

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1 Author(s)
Johnson, C.D. ; Electr. & Comput. Eng., Alabama Univ., Huntsville, AL, USA

The closed-loop performance of linear systems, using discrete-time controllers of the zoh-type, is inherently limited by the rank of the control-distribution matrix B˜=∫kT(k+1)T Φ ((k+1)T, τ)B(τ)dτ. It is shown that such performance limitations can be overcome, or significantly mitigated, without increasing the dimension of the control-vector, by using a new generalization of conventional discrete-time control called "discrete/continuous" control. Several examples are presented to illustrate the results.

Published in:

System Theory, 2002. Proceedings of the Thirty-Fourth Southeastern Symposium on

Date of Conference:

2002