Distributed robust MPC for nonholonomic robots with obstacle and collision avoidance
Li Dai1
Yanye Hao2
Huahui Xie1
Zhongqi Sun3
Yuanqing Xia1
1.School of Automation,Beijing Institute of Technology,Beijing 100081,China2.Xi'an Aeronautics Computing Technique Research Institute,AVIC,Xi'an 710065,Shaanxi,China3.School of Automation,Beijing Institute of Technology,Beijing 100081,China;Yangtze Delta Region Academy of Beijing Institute of Technology,Jiaxing 314019,China
摘要：Considering that the inevitable disturbances and coupled constraints pose an ongoing challenge to distributed control algo-rithms, this paper proposes a distributed robust model predictive control (MPC) algorithm for a multi-agent system with additive external disturbances and obstacle and collision avoidance constraints. In particular, all the agents are allowed to solve optimization problems simultaneously at each time step to obtain their control inputs, and the obstacle and collision avoidance are accomplished in the context of full-dimensional controlled objects and obstacles. To achieve the collision avoidance between agents in the distributed framework, an assumed state trajectory is introduced for each agent which is transmitted to its neighbors to construct the polyhedral over-approximations of it. Then the polyhedral over-approximations of the agent and the obstacles are used to smoothly reformulate the original nonconvex obstacle and collision avoidance con-straints. And a compatibility constraint is designed to restrict the deviation between the predicted and assumed trajectories. Moreover, recursive feasibility of each local MPC optimization problem with all these constraints derived and input-to-state stability of the closed-loop system can be ensured through a sufficient condition on controller parameters. Finally, simulations with four agents and two obstacles demonstrate the efficiency of the proposed algorithm.
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论文发表日期：2022-02-05
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：14( 32-45 )
英文信息