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arXiv 1503.07178math.OC
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基于特殊正交群的角速度观测器在速度自由刚体姿态跟踪控制中的应用

Angular Velocity Observer on the Special Orthogonal Group for Velocity-Free Rigid-Body Attitude Tracking Control

Tse-Huai Wu, Taeyoung Lee

摘要:

研究了在角速度测量不可用时,仅利用姿态测量的刚体姿态跟踪控制问题。构造了一个角速度观测器,使得从几乎所有的初始估计值出发,保证估计的角速度渐近收敛到真实的角速度。由于它是直接在特殊的正交群上开发的,它完全避免了由最小姿态表示或四元数引起的奇异性、复杂性或不连续性。然后,所提出的观测器集成的比例-微分姿态跟踪控制器,显示分离型属性,其中指数稳定性的组合观测器和姿态控制系统是保证。

英文摘要:

This paper studies a rigid body attitude tracking control problem with attitude measurements only, when angular velocity measurements are not available. An angular velocity observer is constructed such that the estimated angular velocity is guaranteed to converge to the true angular velocity asymptotically from almost all initial estimates. As it is developed directly on the special orthogonal group, it completely avoids singularities, complexities, or discontinuities caused by minimal attitude representations or quaternions. Then, the presented observer is integrated with a proportional-derivative attitude tracking controller to show a separation type property, where exponential stability is guaranteed for the combined observer and attitude control system.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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