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DOI:
工程科学与技术:2011,43(6):190-196
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近空间飞行器多模型非脆弱软切换跟踪控制
(南京航空航天大学 自动化学院)
Multi-model Non-fragile Soft Switching Tracking Control for Near Space Vehicle
(College of Automation Eng., Nanjing Univ. of Aeronautics and Astronautics)
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投稿时间:2011-01-14    修订日期:2011-06-30
中文摘要: 针对具有强烈非线性、强耦合等特性的变机翼后掠角近空间飞行器,在考虑控制器存在摄动的情况下,设计了多模型非脆弱软切换鲁棒跟踪控制方案。将系统工作空间划分为若干区域,在每一区域建立局部模型,根据跟踪性能指标利用广义系统的方法设计局部控制器,大大减少了计算量和复杂度,同时减弱了对于待定矩阵的限制,更易于求得可行解,从而降低了保守性。由于控制器在模糊了的边界处进行切换,保证了系统状态在切换过程中的平滑性。最后对近空间飞行器在变机翼后掠角过程中的姿态进行跟踪控制,仿真结果表明了该控制系统具有良好的控制性能。
Abstract:A multi-model non-fragile soft switching robust tracking control strategy was proposed in the presence of the controller gain perturbations for a near space vehicle with variable sweep wings, which had complicated dynamic characteristics such as strong nonlinearity and coupling. The work space of the system was divided into multiple regions. Then local models were built and local controllers were designed according to the performance index by descriptor system method in each region. The complexity and calculation were decreased. The feasible solution could be obtained more easily and the conservatism was reduced as the limitations on undetermined matrices were relaxed. The system stateswere smooth in the process of switching controllers on the blurred boundaries. At last, the attitude tracking of the near space vehicle during its wing morphing was controlled. Simulation results showed that the control system has good control performance.
文章编号:201100065     中图分类号:    文献标志码:
基金项目:国家自然科学基金资助项目(60974106);航空科学基金资助项目(20095152028);南京航空航天大学博士学位论文创新与创优基金资助项目(BCXJ10-04)
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引用文本:
王宇飞,姜长生,吴庆宪.近空间飞行器多模型非脆弱软切换跟踪控制[J].工程科学与技术,2011,43(6):190-196.
Wang Yufei,Jiang Changsheng,Wu Qingxian.Multi-model Non-fragile Soft Switching Tracking Control for Near Space Vehicle[J].Advanced Engineering Sciences,2011,43(6):190-196.