✦ LIBER ✦

Three mode control as an optimal control

✍ Scribed by G.E. O'Connor; M.M. Denn

Publisher: Elsevier Science
Year: 1972
Tongue: English
Weight: 493 KB
Volume: 27
Category: Article
ISSN: 0009-2509
DOI: 10.1016/0009-2509(72)80145-3

No coin nor oath required. For personal study only.

✦ Synopsis

Three mode control with Ziegler-Nichols or Cohen-Coon controller settings is shown to be the solution to an optimal control problem for a linear first order system with dead time and a quadratic cost functional. The implication of this result is that in the absence of an economically meamngful cost criterion there is no reason to prefer the results of optimal control theory to traditional design procedures for feedback control systems. The multivariable generalization of the optimal control uroblem solved here Drovides the means for extending classical control experience in design of single ioop processes to mul&riable control systems.

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