工业机器人永磁同步电机串级模型预测控制

Peng Li, Xiaosu Xu, Zhijian Wei, Xuefeng Jiang
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引用次数: 0

摘要

随着工业自动化和机器人技术的发展,永磁同步电机系统作为工业机器人的执行机构,经常工作在对控制精度要求严格的高精度场合。目前,传统的矢量控制和直接转矩控制难以满足高性能的控制目标。模型预测控制作为一种先进的控制策略,易于实现最优控制。模型预测电流控制消除了电流比例积分控制器的积分影响,提高了电流的动态响应效果。但其转速外环一般仍采用速度比例积分控制器,导致电机转速动态效果不理想。目前,大多数对永磁同步电机的MPC研究都是针对控制系统的某一环节进行的,没有充分发挥MPC性能的优势。因此,本文将MPC策略应用于工业机器人永磁同步电机的电流控制和速度控制,以提高系统的动态和静态性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Cascade Model Predictive Control of Permanent Magnet Synchronous Motor for Industrial Robot
With the development of industrial automation and robotics, the permanent magnet synchronous motor (PMSM) system, as the actuator of industrial robots, often works in high-precision occasions with strict requirements for control accuracy. At present, the traditional vector control and direct torque control are difficult to meet the high-performance control objectives. As an advanced control strategy, model predictive control (MPC) is easy to realize optimal control. Model predictive current control eliminates the integral influence of current proportional integral controller and improves the dynamic response effect of current. However, its speed outer loop generally still adopts speed proportional integral controller, resulting in the unsatisfactory dynamic effect of motor speed. At present, most of the research on MPC of PMSM is carried out for a certain link of the control system, and the advantages of MPC performance are not given full play. Therefore, this paper applies the MPC strategy to the current control and speed control of PMSM for industrial robots to improve the dynamic and static performance of the system.
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