Adaptive Pose Tracking Control for Spacecraft Proximity Operations Under Motion Constraints

2019 ◽  
Vol 42 (10) ◽  
pp. 2258-2271 ◽  
Author(s):  
Hongyang Dong ◽  
Qinglei Hu ◽  
Yueyang Liu ◽  
Maruthi R. Akella
Keyword(s):  
Tracking Control ◽  
Proximity Operations ◽  
Motion Constraints ◽  
Pose Tracking

A hierarchical constraint approach for dynamic modeling and trajectory tracking control of a mobile robot

2021 ◽  
pp. 107754632199918
Author(s):  
Rongrong Yu ◽  
Shuhui Ding ◽  
Heqiang Tian ◽  
Ye-Hwa Chen
Keyword(s):  
Mobile Robot ◽  
Dynamic Modeling ◽  
Trajectory Tracking ◽  
Tracking Control ◽  
Wheeled Mobile Robot ◽  
Structural Constraints ◽  
Control Force ◽  
Trajectory Tracking Control ◽  
Motion Constraints ◽  
Constraint Approach

The dynamic modeling and trajectory tracking control of a mobile robot is handled by a hierarchical constraint approach in this study. When the wheeled mobile robot with complex generalized coordinates has structural constraints and motion constraints, the number of constraints is large and the properties of them are different. Therefore, it is difficult to get the dynamic model and trajectory tracking control force of the wheeled mobile robot at the same time. To solve the aforementioned problem, a creative hierarchical constraint approach based on the Udwadia–Kalaba theory is proposed. In this approach, constraints are classified into two levels, structural constraints are the first level and motion constraints are the second level. In the second level constraint, arbitrary initial conditions may cause the trajectory to diverge. Thus, we propose the asymptotic convergence criterion to deal with it. Then, the analytical dynamic equation and trajectory tracking control force of the wheeled mobile robot can be obtained simultaneously. To verify the effectiveness and accuracy of this methodology, a numerical simulation of a three-wheeled mobile robot is carried out.

Bionic fish pose tracking control based on CPG sliding mode

2021 ◽  
Author(s):  
Wei Zhang ◽  
Fantai Lin ◽  
Haoyu Yang ◽  
Qingshuo Gong
Keyword(s):  
Tracking Control ◽  
Sliding Mode ◽  
Pose Tracking
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