H_∞ based decoupling tracking control of hypersonic vehicle

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• 作者：Xuejing Lan ^{lanxuejing906@hust.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Zhishen Wang ^{wangzhishen99@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Lei Liu ^{Lei.Liu.chn@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Yongji Wan ^{wangyjch@hust.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：decoupling control ; reference model ; H&infin ; LMI ; hypersonic vehicle
• 刊名：IFAC-PapersOnLine
• 出版年：2014
• 出版时间：2014
• 年：2014
• 卷：47
• 期：3
• 页码：894-899
• 全文大小：303 K

文摘

The H_∞ based decoupling tracking control is studied in this paper. A virtual system constituted by the controlled system and the no coupling reference model is firstly set up. The controlled system is driven to follow the reference model to realize the decoupling. And the tracking error can be formulated by the H_∞ norm of the virtual system. Then the controller is derived by minimizing the H_∞ norm, which can be described by Linear Matrix Inequalities (LMIs). The necessary and sufficient condition of existence of controller is derived based on the LMIs above. A flight control example is given to illustrate the effectiveness of the proposed method. The simulation results show that the proposed method is of better control performance than Linear Quadratic (LQ) tracking controller.