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A control algorithm for systems with dead time

✍ Scribed by Shendy M. El-Shal

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
719 KB
Volume
324
Category
Article
ISSN
0016-0032

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✦ Synopsis

A least squares control algorithm for single-input single-output (SISO) systems is del>eloped. The algorithm allows for a delay with large dead time and uses proportionalintegral-derivative actions in their parallel form to achieve steady-state without error. Optimization of the controller parameters is achieved and the parameters of the controller are determined from the solution of a set qf linear simultaneous equations. The control strategy is to optimize the controller parameters such that a desired well-behaved trajectory is obtained. The controller is shown to be robust and the al~gorithm is shown to function as well without or with Iurge dead time, to have low sensitivity to changes in the dead time, and to aIloM. an adaptive estimation of changing sJatem parameters. The application of the developed algorithm to control the glucoregulatory system, based on a 4th-order digital model, is presented in tM'o cases : free time delay and with large dead time.

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