| Feedforward and feedback optimal control for linear time-varying systems with persistent disturbances |
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| 作者姓名： | Tang Gongyou Zhao Yandong & Zhang Baolin Coll. of Information Science and Engineering Ocean Univ. of China Qingdao P. R. China |
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| 作者单位： | Tang Gongyou，Zhao Yandong & Zhang Baolin Coll. of Information Science and Engineering，Ocean Univ. of China，Qingdao 266071，P. R. China |
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| 基金项目： | 国家自然科学基金;山东省自然科学基金 |
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| 摘 要： | 1 .INTRODUCTIONIn nature ,there are various external disturbancesaffecting the performances of systems . Many con-trol problemsinvolve designing a controller capableof stabilizing a given linear system while mini mi-zing the worst-case response to some additive dis-turbances . This problemis relevant to disturbancerejection and cancellation. One application area ofinterest is flight control through wind shear ,where disturbances arise from a modal for windshear based on harmonic oscillati…
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| 收稿时间： | 2 January 2005. |
Feedforward and feedback optimal control for linear time-varying systems with persistent disturbances |
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| Tang Gongyou,Zhao Yandong & Zhang Baolin Coll. of Information Science and Engineering,Ocean Univ. of China,Qingdao ,P. R. China.Feedforward and feedback optimal control for linear time-varying systems with persistent disturbances[J].Journal of Systems Engineering and Electronics,2006,17(2):350-354. |
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| Authors: | Tang Gongyou Zhao Yandong Zhang Baolin |
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| Institution: | Coll. of Information Science and Engineering, Ocean Univ. of China, Qingdao 266071, P. R. China |
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| Abstract: | The optimal control problem for linear time-varying systems affected by external persistent disturbances with known dynamic characteristics but unknown initial conditions is consider and a design procedure of a feedforward and feedback optimal controller is presented. The condition of existence and uniqueness of the control law is given. The disturbance observer is proposed to make the feedforward control law realizable physically. Simulation results demonstrate that the feedforward and feedback optimal control law is more effective and robust than the classical state feedback control law with respect to external disturbances. |
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| Keywords: | time-varying systems persistent disturbances optimal control feedforward control disturbance observer |
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