基于速度阻尼的两相步进电机矢量控制  

Vector Control of Two-Phase Stepping Motor Based on Speed Damping

作　　者：郑灵瑜 张团善[1] 杜鑫 ZHENG Lingyu;ZHANG Tuanshan;DU Xin(Shaanxi Intelligent Textile Equipment Research Institute,Xi’an Polytechnic University,Xi'an,710048,China)

机构地区：[1]西安工程大学陕西省智能纺织装备研究院,陕西西安710048

出　　处：《轻工机械》2021年第1期57-62,共6页Light Industry Machinery

摘　　要：两相混合式步进电机因其齿槽结构、反电动势和绕组电感的影响,转速在达到稳态时仍有细小波动。针对电机控制精度问题,课题组提出了一种速度自适应PI控制器,并在速度自适应PI基础上结合速度阻尼控制来改善电机的稳态波动;同时采用两相空间矢量脉宽调制(space vector pulse width modulation,SVPWM)控制策略,从电流环降低相电流纹波和谐波含量。仿真结果表明在电机速度达到稳态时,速度基本稳定无振荡。课题组提出的方法解决了步进电机超调大、响应慢和平滑速度等控制难题。The two-phase hybrid stepper motor still has small fluctuations in the steady speed due to its cogging structure,back electromotive force,and winding inductance.Aiming at the problem of motor control accuracy,a speed-adaptive PI controller was proposed,and speed damping control was combined with speed-adaptive PI to improve the steady-state fluctuation of the motor.At the same time,the two-phase space vector pulse width modulation(SVPWM)control strategy was adopted to reduce the phase current ripple and harmonic content from the current loop.The simulation results show that when the motor speed reaches the steady state,the speed is basically stable without oscillation.The proposed method solves the control problems such as overshoot,slow response,and smooth speed of the stepper motor.

关 键 词：两相步进电机 两相空间矢量脉宽调制 速度阻尼控制 速度自适应PI 

分 类 号：TM383.6[电气工程—电机]