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Content available On LQ optimization problem subject to fractional order irregular singular systems
Muhafzan, Nazra Admi, Yulianti Lyra, Zulakmal, Revina Refi
Archives of Control Sciences
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2020
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Vol. 30, No. 4
745--756
EN
In this paper we discuss the linear quadratic (LQ) optimization problem subject to fractional order irregular singular systems. The aim of this paper is to find the control-state pairs satisfying the dynamic constraint of the form a fractional order irregular singular systems such that the LQ objective functional is minimized. The method of solving is to convert such LQ optimization into the standard fractional LQ optimization problem. Under some particularly conditions we find the solution of the problem under consideration.
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Content available On discounted LQR control problem for disturbanced singular system
Yulianti Lyra, Nazra Admi, Zulakmal, Bahar Arifah, Muhafzan
Archives of Control Sciences
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2019
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Vol. 29, No. 1
147--156
EN
The LQR (linear quadratic regulator) control problem subject to singular system constitutes a optimization problem in which one must be find an optimal control that satisfy the singular system and simultaneously to optimize the quadratic objective functional. In this paper we establish a sufficient condition to obtain the optimal control of discounted LQR optimization problem subject to disturbanced singular system where the disturbance is time varying. The considered problem is solved by transforming the discounted LQR control problem subject to disturbanced singular system into the normal LQR control problem. Some available results in literatures of the normal LQR control problem be used to find the sufficient conditions for the existence of the optimal control for discounted LQR control problem subject to disturbanced singular system. The final result of this paper is in the form a method to find the optimal control of discounted LQR optimization problem subject to disturbanced singular system. The result shows that the disturbance is vanish with the passage of time.
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