直线电机进给系统及其驱动控制的研究

【作者】 唐振宇；

【导师】 李锻能；

【作者基本信息】 广东工业大学 ， 机械制造及其自动化， 2004， 硕士

【摘要】 高速加工技术是近十年来迅速崛起的一项先进制造技术。既能大大减少切削时间，又能提高加工精度。高速数控机床和高速加工中心迅猛发展，推动了其功能部件(如数控系统、高速主轴、高速进给系统等)迅速发展。高速加工广泛应用于航空工业、汽车制造工业、模具加工工业等领域。 直线电机进给系统是高速机床的主要功能部件。它彻底改变了传统的滚珠丝杠传动方式存在的弹性变形大、响应速度慢、存在反向间隙、易磨损等先天性的缺点，并具有速度、加速度大、定位精度高、行程长度不受限制等优点，令其在机床高速进给系统领域逐渐发展为主导方向。 本文主要以我校“GD-3型直线电机进给单元”为研究对象。从电机学的角度建立了直线感应电机的数学模型，然后又建立了直线电机进给系统的控制模型，通过MATLAB的Simulink功能模块仿真分析模型中各参数和系统动态稳定性的关系。论文还利用DSP试验装置，搭建了直线感应电机控制的简易试验平台。结合交流电机变频调速的V／F理论，采用数字控制的方法设计了直线电机的SPWM程序，并通过硬件仿真，验证该程序能够满足直线感应电机驱动的需要。更多还原

【Abstract】 High Speed Machining (HSM) is one of the most Advanced Manufacturing Technologies, which is developing quickly recently. It can decrease the cutting time greatly, and also improve the precision of machining. The functional parts of High Speed NC Machining Tools and High Machining Center (Such as, NC System, High Speed Spindle and High Speed Feed System, etc.) have been improved by the great development of the High Speed NC Machining tools and High Machining Center. HSM has been applied in many fields, such as aviation industry, automobile industry and die machining industry, etc.Linear Motor Feed System (LMFS) is one main functional part of the High Speed Machining tools. LMFS has changed the inherent defects of the traditional drive mode driven by ball screw drastically which have large elastic deformation, slow response, reverse clearance and friction wear, and has some advantages of high speed ,high acceleration, high positioning accuracy and unlimited travel, all these merits made it becoming the leading way gradually in the high speed feed system of machining tools field.The "GD-3 Feed System Driven by Linear Motor" is studied in this thesis. The mathematical model of the linear induction motor is built in the way of motor science, and then the control model of the linear motor feed system is proposed, and the relations between the parameters in the model and the system dynamic performances are studied, using the Simulink Module in MATLAB. The simple experiment facility for controlling the linear induction motor has been established through the use of DSP trial device. Based on the for the frequency-to-speed theory of the AC motor, the SPWM program of linear motor is designed by the method of digital control way. And the program is validated to be able to satisfy the requirement of the linear induction motor driving through the hardware simulation.更多还原