引用本文: | 李高铭,聂卓赟,李兆洋,郑义民,罗继亮.非平衡负载下轮式移动机器人的抗扰PID控制[J].控制理论与应用,2021,38(3):398~406.[点击复制] |
LI Gao-ming,NIE Zhuo-yun,LI Zhao-yang,ZHENG Yi-min,LUO Ji-liang.Disturbance rejection PID control of wheeled mobile robot under non-equlibrium load[J].Control Theory and Technology,2021,38(3):398~406.[点击复制] |
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非平衡负载下轮式移动机器人的抗扰PID控制 |
Disturbance rejection PID control of wheeled mobile robot under non-equlibrium load |
摘要点击 2615 全文点击 829 投稿时间:2020-05-01 修订日期:2020-09-12 |
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DOI编号 10.7641/CTA.2020.00237 |
2021,38(3):398-406 |
中文关键词 轮式移动机器人 运动控制 干扰观测器 抗扰PID |
英文关键词 wheeled mobile robot motion control disturbance observer disturbance rejection PID |
基金项目 国家自然科学基金项目(61403149), 福建省自然科学基金项目(2019J01053), 华侨大学研究生科研创新基金项目(18013082042)资助. |
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中文摘要 |
在非平衡负载条件下, 轮式移动机器人(WMR)的前进、转向速度耦合, 影响着轨迹跟踪和避障等运动控制
性能. 为此, 本文提出了一种基于抗扰PID(DR–PID)控制器的WMR速度调节主动抗扰(ADR)控制策略. 首先, 建立
WMR的速度耦合模型, 引入解耦矩阵减小静态耦合作用; 然后, 基于一类改进干扰观测器(DOB)控制方法, 设计一
种具有ADR能力的PID控制器, 即DR–PID, 用于WMR的速度分散调节. 进一步, 考虑高频增益不匹配/不确定性, 分
析闭环系统稳定性条件. 所得结论揭示了PID控制器的抗扰机理; 最后, 在不平衡负载条件下开展WMR运动控制实
验研究, 实验结果验证了所提方法的有效性. |
英文摘要 |
Under the condition of non-equilibrium load, the coupling effect between the forward and steering speeds
in the wheeled mobile robot (WMR) affects the motion control performance greatly, such as the trajectory tracking and
obstacle avoidance. Therefore, this paper proposes an active disturbance rejection (ADR) control strategy for the speed
tuning of WMR based on disturbance rejection PID (DR–PID) controller. Firstly, the speed coupling model of WMR is
established to derive the decoupling matrix for static coupling reduction. Then, the design of PID controller with ADR capability,
named DR–PID, is presented based on an improved disturbance observer control scheme. The DR–PID controller
is utilized for the decentralized speed tuning in WMR. Furthermore, the closed-loop stability condition is investigated with
the consideration of high-frequency gain unmatching/uncertainty. This result reveals the ADR mechanism of the standard
PID controller. Finally, experimental study of WMR motion control is carried on with non-equilibrium load. The validity
of the proposed method is verified by experimental results. |
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