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arXiv 2008.10438eess.SYcs.SY
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基于Lyapunov控制器的机器人自适应鲁棒扩展卡尔曼滤波器设计

Designing adaptive robust extended Kalman filter based on Lyapunov-based controller for robotics manipulators

AR Ghiasi, AA Ghavifekr, Y Shabbouei Hagh, H SeyedGholami

摘要:

本文研究了受常值有界扰动影响的机器人位置和速度估计方法。将跟踪控制问题转化为一个扰动抑制问题,将所有的未知参数和动态不确定性归结为扰动。采用自适应鲁棒扩展卡尔曼滤波器(AREKF)预测各关节的运动和速度,用于不连续李雅普诺夫控制器结构。误差动力学参数已离线验证的实际数据。通过对一个二自由度机械臂的仿真,比较了EKF和改进AREKF的性能,验证了改进卡尔曼滤波器的有效性。虽然它表明,精确的轨迹跟踪可以实现通过使用所提出的控制器。

英文摘要:

In this paper, a position and velocity estimation method for robotic manipulators which are affected by constant bounded disturbances is considered. The tracking control problem is formulated as a disturbance rejection problem, with all the unknown parameters and dynamic uncertainties lumped into disturbance. Using adaptive robust extended Kalman filter(AREKF) the movement and velocity of each joint is predicted to use in discontinuous Lyapunov-based controller structure. The parameters of the error dynamics have been validated off-line by real data. Computer simulation results given for a two degree of freedom manipulator demonstrate the efficacy of the improved Kalman Filter by comparing the performance of EKF and improved AREKF. Although it is shown that accurate trajectory tracking can be achieved by using the proposed controller.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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