摘要
为解决双丝杠进给系统同步控制误差过大的问题,建立了双丝杠进给系统的机电耦合仿真模型,并基于模糊控制与滑模控制理论,设计了单轴模糊滑模跟踪控制器,以减小滑模控制产生的抖振现象,同时提高单轴跟踪精度以及响应速度;为解决双丝杠运行时存在的参数不匹配和耦合问题,采用模糊PID交叉耦合控制算法进行两轴间的协调控制,以提高两轴同步性,减小同步误差;最后进行了MATLAB/Simulink建模与仿真分析,仿真结果表明,在理论上能够提高单丝杠的信号跟踪精度87.09%,并且减小双丝杠两轴之间的同步运动误差86.79%。
In order to solve the problem of excessive synchronization control error of the double-screw feed system, the electromechanical coupling simulation model of the double-screw feed system was established, and based on fuzzy control and sliding mode control theory, a single-axis fuzzy sliding mode tracking controller is designed.Single-axis fuzzy sliding mode tracking controller to reduce chattering caused by sliding mode control, while improving single-axis tracking accuracy and response speed.Secondly, in order to solve the problem of parameter mismatch and coupling during the operation of the double screw, the fuzzy PID cross-coupling control algorithm is used to coordinate the control between the two axes to improve the synchronization of the two axes and reduce the synchronization error.Finally, the MATLAB/Simulink modeling and simulation analysis are carried out.The simulation results show that the method can theoretically improve the signal tracking accuracy of the single screw by 87.09%,and reduce the synchronous motion error between the two axes of the double screw by 86.79%.
作者
许向荣
尚彤
XU Xiang-rong;SHANG Tong(School of Mechanical and Electrical Engineering,Shandong Jianzhu University,Jinan 250100,China)
出处
《组合机床与自动化加工技术》
北大核心
2022年第4期52-56,共5页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然基金项目(51205235)
山东建筑大学校内博士基金(XNBS1246)。
关键词
双丝杠
模糊滑模控制
模糊PID
交叉耦合
double screw
fuzzy sliding mode control
suspicious PID
cross loop
