宇航学报 ›› 2012, Vol. 33 ›› Issue (10): 1432-1438.doi: 10.3873/j.issn.1000-1328.2012.10.010

• 制导、导航与控制 • 上一篇    下一篇

考虑执行器动态补偿的动中通系统非线性鲁棒控制

姜君, 陈庆伟, 郭健   

  1. (南京理工大学自动化学院,南京 210094)
  • 收稿日期:2011-07-21 修回日期:2011-11-18 出版日期:2012-10-15 发布日期:2012-10-22
  • 基金资助:
    国家自然科学基金(61074023,60975075);江苏省自然科学基金(BK2008404);江苏省科技支撑计划(BE2009160);江苏省研究生创新工程(CXZZ_0254)

Nonlinear Robust Control of Mobile Satellite Communication System Considering Actuator Dynamic Compensation

JIANG Jun, CHEN Qing-wei, GUO Jian   

  1. (Nanjing University of Science and Technology,Nanjing 210094,China)
  • Received:2011-07-21 Revised:2011-11-18 Online:2012-10-15 Published:2012-10-22

摘要:

研究用于移动载体卫星通信的动中通系统的稳定跟踪问题。选取动中通系统的三轴非线性模型为被控对象,较单轴模型更能准确地描述子系统之间的运动学与动力学特性。在执行器动态特性的基础上,设计了一种具有执行器动态补偿的非线性鲁棒控制器。该控制器不仅能够使系统在载体移动过程中隔离载体扰动的影响,精确跟踪目标卫星,而且还进一步解决了执行器动态特性对系统的影响,更符合实际动中通控制系统设计的需要。最后通过三组对比仿真结果验证了所设计控制器在不同扰动条件下的稳定跟踪性能。


 

关键词: 动中通, 非线性系统, 反步法, 鲁棒控制, 执行器动态

Abstract: A mobile satellite communication system is installed on a moving carrier for satellite communication. The tracking and stabilizing problem of the mobile satellite communication system is studied in this paper. The triaxis nonlinear model of the mobile satellite communication system is chosen as the control object, because it can describe the kinematics and dynamics features of the system more accurately than the singleaxis model.
Based on the actuator dynamic features, a nonlinear robust controller with actuator dynamic compensation is designed. The designed controller can eliminate the disturbances when the carrier is moving and track the target satellite accurately. Because the problem of the actuator dynamics is further considered, the controller is more suitable for the practical application. At last, three sets of comparative simulation results are used to verify the tracking and stabilizing effectiveness of the designed controller under different disturbances.

Key words: Mobile satellite communication system, Nonlinear system, Backstepping, Robust control, Actuator dynamics

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