Optimal control for discrete-time singular stochastic systems with input delay

Optimal control for discrete-time singular stochastic systems with input delay

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Article ID: iaor20163924
Volume: 37
Issue: 6
Start Page Number: 1282
End Page Number: 1313
Publication Date: Nov 2016
Journal: Optimal Control Applications and Methods
Authors: , ,
Keywords: optimization, stochastic processes
Abstract:

The finite‐horizon linear quadratic regulation problem is considered in this paper for the discrete‐time singular systems with multiplicative noises and time delay in the input. Firstly, the extremum principle is discussed, and a stationary condition is derived for the singular stochastic system. Then, based on the relationships established between the state and the costate variables, the stationary condition is also shown to be a sufficient criterion assuring the existence of the solution for the stochastic control problem. The optimal controller is designed as a linear function of the current state and the past inputs information, which can be recursively calculated by effective algorithms. With the designed optimal controllers, the explicit expression is also derived for the minimal value of the performance index. One numerical example is provided in the end of the paper to illustrate the effectiveness of the obtained results

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