Fixed-time tracking control for two-link rigid manipulator based on disturbance observer

被引:12
作者
Gao, Heli [1 ,2 ]
Chen, Mou [1 ]
机构
[1] Nanjing Univ Aeronaut & Astronaut, Coll Automat Engn, Nanjing 210016, Peoples R China
[2] Binzhou Univ, Coll Sci, Binzhou, Peoples R China
关键词
Trajectory tracking; inverse dynamics control; disturbance observer; bi-limit homogeneous; fixed-time stability; SLIDING MODE CONTROL; CONTROL SCHEME; DESIGN; STABILITY; SYSTEMS; SPACE;
D O I
10.1177/0142331220983637
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This paper studies the fixed-time disturbance estimate and tracking control for two-link manipulators subjected to external disturbance. A fixed-time extended-state disturbance observer (FxTESDO) is proposed by improving the extended state observer. Also, a fixed-time inverse dynamics tracking control (FxTIDTC) scheme based on the FxTESDO is given for two-link manipulators. The fixed-time convergence of the FxTESDO and FxTIDTC is proved by the Lyapunov stability theory and with the aid of the bi-limit homogeneous technique. Numerical simulations are employed to illustrate the effectiveness of the proposed FxTIDTC.
引用
收藏
页码:1924 / 1935
页数:12
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