流体机械

2019, v.47;No.565(07) 1-5+33

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直行程电动调节阀机械传动间隙软件补偿策略研究
Study on the Mechanical Backlash Software Compensation Strategy for Linear Type Electric Valve Actuators

王博;汤伟;董继先;刘欢;黄勋;张越;
Wang Bo;Tang Wei;Dong Jixian;Liu Huan;Huang Xun;Zhang Yue;College of Bioresources Chemical and Materials Engineering of Shaanxi University of Science & Technology;College of Mechanical & Electrical Engineering of Shaanxi University of Science & Technology;

摘要(Abstract):

直行程执行器存在的械传动间隙往往被忽略,造成执行器的回程定位误差,执行器的定位精度难以满足应用要求。本文对这一问题展开应用技术研究,提出了软件补偿控制策略,并开发了机械传动间隙测量试验装置,分别测量了执行器在行程范围内的机械传动间隙数据,及软件补偿后的回程定位精度。试验数据表明,补偿策略能够将执行器的回程定位误差由4.49%降低到0.55%;并发现了软件补偿策略仅能补偿机械传动间隙引起误差的均值,而不能消除误差波动量的规律。该策略能够将执行器定位精度提高8倍以上,为高精度阀门电动执行器的研制提供了理论及技术参考。
Because the mechanical drive backlash of the linear stroke electric valve actuator is often neglected,the positioning precision of return stroke of valve actuator couldn't meet the application requirements due to the return stroke error. In this paper,the applied technological research was conducted on this problem. The software backlash compensation and control strategy was proposed,and a test device for measurement of mechanical drive backlash was developed. The mechanical drive backlash data of the actuator within the stroke range and the return stroke positioning precision after compensation were measured,respectively.Test data shows that the compensation strategy can reduce the return stroke error of the actuator from 4.49% to 0.55%. It was found that the software compensation strategy could only compensate the average value of errors caused by mechanical drive backlash,but could not eliminate fluctuation of errors.This strategy could improve the positioning precision of the actuator by more than 8 times,which provides a theoretical basis and technical reference for the development of high-precision electric valve actuators.

关键词(KeyWords): 电动调节阀;直行程执行器;机械传动间隙;软件补偿;控制策略
electric regulating valve;linear stroke actuator;mechanical drive backlash;software compensation;control strategy

Abstract:

Keywords:

基金项目(Foundation): 陕西省技术创新引导专项(基金)项目(2018HJCG-10);; 陕西省教育厅产业化培育项目(16JF005);; 陕西科技大学博士科研启动基金项目(2018BJ-28)

作者(Author): 王博;汤伟;董继先;刘欢;黄勋;张越;
Wang Bo;Tang Wei;Dong Jixian;Liu Huan;Huang Xun;Zhang Yue;College of Bioresources Chemical and Materials Engineering of Shaanxi University of Science & Technology;College of Mechanical & Electrical Engineering of Shaanxi University of Science & Technology;

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