[期刊论文] 马骏腾, 金栋平, Z Wei, et al, Boundary control of a flexible manipulator based on a high order disturbance observer with input saturation. Shock and Vibration, 2018, Volume 2018: 2086424.

发布者:孙加亮发布时间:2020-04-17浏览次数:589

Boundary control of a flexible manipulator based on a high order disturbance observer with input saturation

Junteng Ma, Dongping Jin, Zhengtao Wei and Hao Wen


Abstract: This paper studies a new boundary control strategy for a flexible manipulator subject to unknown fast time-varying disturbances. The flexible manipulator essentially is an infinite dimensional continuum. Hence, a continuous function of space and time can be employed to describe the position of such a distributed parameter structure, the motion of which can be described by partial differential equations (PDEs). To cope with fast time-varying external disturbances, a high order disturbance observer is adopted. A control strategy based on such a disturbance observer is proposed for the rest-rest maneuvering of the flexible manipulator. Moreover, a smooth hyperbolic function is included in the controller to satisfy the requirement of input saturation. The stability of the boundary control is analyzed using LaSalle’s invariance principle. Finally, the performance of the presented boundary controller is verified through comparison with that of employing a constant disturbance observer via numerical simulations.

 

原文链接:https://www.hindawi.com/journals/sv/2018/2086424/