Research of controllable load module analysis and control algorithm on linear motor test platform

The linear motor drive technology is used more and widely in ultra-precision positioning and processing areas. Development of an integrated linear motor performance test platform can improve the integrated features of direct-drive products, their reliability, stability and application levels, and can also provide technical support for the formulation of relevant standards. The load module, as an important part of the linear motor test platform, plays an important role in motor tests. In order to meet the requirements of linear motor testing, this paper has studied the overall control program of the load module, design and control of current loops, suppression of the thrust fluctuations of the load motor, and compensation for inverter dead-time in motor driving. It has developed AC servo control unit and algorithms control program to achieve load motor motion control. Finally, both the relevant performance test and actual operation prove that the program and control strategies adapted are easy to control with characteristics of high precision and high stability in force and torque output, which can meet the test requirements of a direct-drive motor.