数字驱动系统死区效应的双刷新补偿

王雷; 王龙; 唐学军; 林灿发

doi:10.3788/OPE.20122012.2712

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数字驱动系统死区效应的双刷新补偿

微纳技术与精密机械 | 更新时间：2020-08-13

- 数字驱动系统死区效应的双刷新补偿
- Double updating dead-time compensation for digital drive system
- 光学精密工程 2012年20卷第12期页码：2712-2719
- 作者机构：
  
  哈尔滨工业大学超精密光电仪器工程研究所,黑龙江哈尔滨 150080
- 作者简介：
- 基金信息：
  
  02科技重大专项资助项目(No.2009ZX02021)();国家自然科学基金资助项目(No.50905046)()
- DOI：10.3788/OPE.20122012.2712
  中图分类号： TM351
- 收稿日期：2012-06-08，
  
  修回日期：2012-06-28，
  
  纸质出版日期：2012-12-10
- 稿件说明：
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王雷, 王龙, 唐学军, 林灿发. 数字驱动系统死区效应的双刷新补偿[J]. 光学精密工程, 2012,20(12): 2712-2719

WANG Lei, WANG Long, TANG Xue-jun, LIN Can-fa. Double updating dead-time compensation for digital drive system[J]. Editorial Office of Optics and Precision Engineering, 2012,20(12): 2712-2719
王雷, 王龙, 唐学军, 林灿发. 数字驱动系统死区效应的双刷新补偿[J]. 光学精密工程, 2012,20(12): 2712-2719 DOI： 10.3788/OPE.20122012.2712.

WANG Lei, WANG Long, TANG Xue-jun, LIN Can-fa. Double updating dead-time compensation for digital drive system[J]. Editorial Office of Optics and Precision Engineering, 2012,20(12): 2712-2719 DOI： 10.3788/OPE.20122012.2712.

摘要

针对死区效应会导致永磁同步直线电机相电流失真、推力波动

从而限制其在精密气浮工作台等高精度、低频轻载场合应用的问题

提出了一种根据相电流极性改变驱动器输入信号脉冲宽度来补偿死区效应的方法

双刷新补偿法(DUDTC)。首先

分析了死区效应引起的驱动器输出信号脉冲宽度变化

给出了脉宽调制(PWM)信号上升沿和下降沿的补偿与相电流极性间的关系;然后

在Matlab/Simulink中对死区效应的影响和双刷新补偿法的作用进行仿真;最后

在直线气浮工作台系统中实现了双刷新补偿法。实验显示

该方法相位延迟仅0.5个伺服周期

在电机速度开环和闭环下均使相电流畸变减小

波形正弦化。结果表明

双刷新补偿法能有效改善直线电机电流环性能

且代码量少、移植性好

适用于各类数字开关驱动系统。

Abstract

Dead-time effect results in distorted currents and force pulsations of Permanent Magnetic Linear Synchronous Motors(PMLSM)

which limits the uses of precision stages in conditions of high accuracy

low frequency and lighter loadings. To compensate the Dead-time effect

this paper proposed a Double Updating Dead-time Compensation (DUDTC) method to correct each input pulse width of the motor driver according to phase current polarity. Firstly

the effect of dead-time on driver output pulses was analyzed and the correlation between correction of Pulse Width Modulation(PWM) and phase current polarities was given. Then

the method was evaluated through simulations in Matlab/Simulink and experiments in a linear-stage system. The results indicate that the phase error of DUDTC is only 0.5 servo periods and its phase current distortions is reduced. The DUDTC shows less codes and good portability

and is an efficient method to compensate the dead-time effect in digital drive systems.

关键词

Keywords

references

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