交流直线电机矢量变换控制软换向方法及实现

分析了磁场定向矢量控制原理,研究了将其应用于交流永磁直线电机的方法与实现途径,建立了基于PC和专用AD/DA板的交流永磁直线电机控制实验系统,采用C语言开发了磁场定向矢量控制程序,由初始化程序得到矢量控制所需的初始化参数,实时中断程序对控制电流进行矢量变换,进而实现对交流永磁直线电机驱动的工作台进行运动控制.通过对初始化阶段电机动子位置、恒定控制电流下A相电流以及电机位置、速度控制的实验数据分析,验证了所研究的基于磁场定向的交流直线电机矢量变换控制方法的有效性.

Principle of software commutation and application in vector control of AC linear motor

The approach of implementing the field oriented vector control to AC linear motor was studied based on the analysis of the vector control principle. An experimental system of linear motor control system was built for testing by use of PC and special AD/DA board as the control system hardware. The control program was developed in C language, which includes initializing module for the initial parameter calculation, real time interrupt service module for the feedback sampling and vector control calculation and handle of I/O, and other interface modules, etc. The experiment pictures of the positions of the motor in the initialization stage, the linear velocity and the positions of the motor in position closed loop state, etc, were shown separately. The testing results demonstrate that the approach of the field oriented vector control developed for an AC linear motor driving table is valid and realizable.