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Double position loop design of AC servo drive system

机译：AC伺服驱动系统的双位置环设计

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摘要

The loop controller of double position fully closed makes the AC servo drive system acquire a very high position accuracy and speed following which is hard to be achieved for time-varying parameters, load disturbance, AC motors and severely nonlinear controlled objects. For the system, the dynamic nature can be ensured by the inner position loop adopting PI regulation of half closed loop structure, while the stability and the immunity can be achieved by closed loop structures with the rings outside adopting dual-mode fuzzy control. This article analyzes the cause of positioning errors for servo motor and semi-closed loop structure. The article also explains how to design a two position closed-loop servo system based on fuzzy control by adopting the AC servo motor drive, the motor shaft back-end incremental photoelectric encoder to form the inner position loop and using the motion control card, the inner ring of servo system and the work platform of grating ruler to make up the outer position loop. Based on double position loop composed of three-dimensional laser processing gear, the accuracy of the three-axis linkage workbench position control and the speed following can be ensured, thus meeting the requirement of the laser subsurface engraving machine for high speed and high precision motion.
机译：完全关闭的双位置的环路控制器使交流伺服驱动系统获取非常高的位置精度和速度，这是难以实现的时变参数，负载干扰，交流电动机和严重的非线性控制物体。对于该系统，可以通过采用半闭环结构的PI调节的内位置环路来确保动态性质，而稳定性和免疫可以通过闭环结构与外圈采用双模模糊控制的环来实现。本文分析了伺服电机和半闭环结构定位误差的原因。本文还介绍了如何通过采用AC伺服电机驱动器，电动机轴后端增量光电编码器来设计基于模糊控制的两个位置闭环伺服系统，以形成内部位置环并使用运动控制卡，伺服系统内圈和光栅尺的工作平台构成外部位置环。基于由三维激光加工齿轮组成的双位置环，可以确保三轴连接工作台位置控制和速度的精度，从而满足激光地下雕刻机的高速和高精度运动的要求。

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