Observer-based approximate optimal tracking control for time-delay systems with external disturbances

Hao Su and Gong-You Tang

International Journal of Systems Science, 2016, vol. 47, issue 12, 2837-2846

Abstract: This paper proposes a successive approximation design approach of observer-based optimal tracking controllers for time-delay systems with external disturbances. To solve a two-point boundary value problem with time-delay and time-advance terms and obtain the optimal tracking control law, two sequences of vector differential equations are constructed first. Second, the convergence of the sequences of the vector differential equations is proved to guarantee the existence and uniqueness of the control law. Third, a design algorithm of the optimal tracking control law is presented and the physically realisable problem is addressed by designing a disturbance state observer and a reference input state observer. An example of an industrial electric heater is given to demonstrate the efficiency of the proposed approach.

Date: 2016
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DOI: 10.1080/00207721.2015.1034300

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