胡灵美, 陈杨, 陈俊风, 蓝艇. 基于自适应模糊补偿的机械臂复合控制策略[J]. 信息与控制, 2016, 45(3): 342-347. DOI: 10.13976/j.cnki.xk.2016.0342
引用本文: 胡灵美, 陈杨, 陈俊风, 蓝艇. 基于自适应模糊补偿的机械臂复合控制策略[J]. 信息与控制, 2016, 45(3): 342-347. DOI: 10.13976/j.cnki.xk.2016.0342
HU Lingmei, CHEN Yang, CHEN Junfeng, LAN Ting. Compound Control Strategy for Manipulator Based on Adaptive Fuzzy Compensation[J]. INFORMATION AND CONTROL, 2016, 45(3): 342-347. DOI: 10.13976/j.cnki.xk.2016.0342
Citation: HU Lingmei, CHEN Yang, CHEN Junfeng, LAN Ting. Compound Control Strategy for Manipulator Based on Adaptive Fuzzy Compensation[J]. INFORMATION AND CONTROL, 2016, 45(3): 342-347. DOI: 10.13976/j.cnki.xk.2016.0342

基于自适应模糊补偿的机械臂复合控制策略

Compound Control Strategy for Manipulator Based on Adaptive Fuzzy Compensation

  • 摘要: 针对刚性机械臂存在摩擦和扰动等不确定因素给轨迹跟踪控制带来的困难,本文基于李亚普诺夫稳定性理论,给出了一种机械臂的自适应控制方案.该方案针对机械臂的标称部分,采用计算力矩的方法设计相应的控制量,在此基础上,构造模糊系统逼近摩擦得到补偿控制量,并针对随机扰动的上界设计反馈控制率,以克服扰动带来的影响,保证系统的稳定性.仿真结果表明,该复合控制对于具有不确定性摩擦以及扰动的机械臂轨迹跟踪问题效果良好.

     

    Abstract: In this paper, we propose an adaptive control scheme, based on the Lyapunov stability theory, for a manipulator in cases characterized by uncertainties such as friction and disturbance, which cause difficulties in the manipulator's tracking control. First, we compute the torque controller based on the nominal value of the manipulator. Next, we propose a fuzzy compensator to track friction. Then, we design a feedback controller based on the upper bound of the random perturbation to guarantee the system's stability. The simulation results for the robot manipulator's trajectory tracking in cases with uncertain friction and perturbation demonstrate the validity of the proposed compound control strategy.

     

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