Predictive Control Based upon State Space Models
Open Access
- 1 January 1989
- journal article
- Published by Norwegian Society of Automatic Control in Modeling, Identification and Control: A Norwegian Research Bulletin
- Vol. 10 (2) , 65-76
- https://doi.org/10.4173/mic.1989.2.1
Abstract
Repetitive online computation of the control vector by solving the optimal control problem of a non-linear multivariable process with arbitrary performance indices is investigated. Two different methods are considered in the search for an optimal, parameterized control vector: Pontryagin's Maximum Principle and optimization by using the performance index and its gradient directly. Unfortunately, solving this optimization problem has turned out to be a rather time-consuming task which has resulted in a time delay that cannot be accepted when the actual process is exposed to rapidly-varying disturbances. However, an instantaneous feedback strategy operating in parallel with the original control aogorithm was found to be able to cope with this problemKeywords
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