电动冲击扳手定扭矩控制方法研究  

Research on constant torque control method for electric impact wrench

作　　者：刘星辰 谢峰[1] 汪小武 吴欢乐 LIU Xingchen;XIE Feng;WANG Xiaowu;WU Huanle(College of Electrical Engineering and Automation,Anhui University,Hefei 230000,China)

机构地区：[1]安徽大学电气工程及其自动化学院,合肥230000

出　　处：《现代制造工程》2024年第7期152-159,共8页Modern Manufacturing Engineering

基　　金：国家自然科学基金项目(51975003);安徽省科技攻关重大专项资助项目(201903a05020039)。

摘　　要：研究了电动冲击扳手定扭矩控制的问题。首先建立了电动冲击扳手碰撞模型和扭矩累积模型,分析了影响扳手扭矩输出的因素,提出了一种基于冲击次数和冲击块转速的定扭矩控制方案,同时设计了冲击次数采集方案和基于模糊PID的双闭环直流无刷电机的转速控制方案。在搭建的电动冲击扳手扭矩测试平台上进行验证,结果表明,在冲击次数为200时,扳手的定扭矩控制精度可达到±4%以内。该定扭矩控制方法具有控制精度高、成本低及操作方便等特点。通过实际应用验证了该方法的可行性。The constant torque control of electric impact wrench was studied.Firstly,the collision model and torque accumulation model of electric impact wrench were established,and the factors affecting the torque output of wrench were analyzed.A constant torque control scheme based on impact times and impact block speed was proposed.At the same time,the collection scheme of impact times and the speed control scheme of double closed-loop DC brushless motor based on fuzzy PID were designed.Verified on the torque test platform of electric impact wrench,the results show that the torque control accuracy of the wrench can reach within±4%when the impact times are 200 times.The constant torque control method has the characteristics of high control accuracy,low cost and convenient operation.The feasibility of this method was verified by practical application.

关 键 词：电动冲击扳手 扭矩累积模型 定扭矩控制 螺栓拧紧 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]