Linear Active Disturbance Rejection Control for a High-precision Linear Motor X-Y Stage

Permanent magnet linear synchronous motor (PMLSM) has the characteristics of high speed and high precision, and has been respected in the fields of precision motion and high-precision machining. The linear motor X-Y stage is the core component of precision manufacturing equipment. Improving the control accuracy of the XY stage can effectively improve the overall accuracy of the equipment. This paper uses linear motors, linear guides, photoelectric encoders, etc. to build an X-Y platform, and uses a CK3M controller and ACS driver to complete the control system. Linear Active Disturbance Rejection Controller (LADRC) is an important achievement of transforming ADRC control idea to engineering application, which greatly reduces the difficulty of controller engineering application. In this paper, the LADRC control algorithm is used to control the linear motor X-Y stage, software simulation and platform experiments are carried out respectively, and the control effect of the LADRC algorithm is verified by comparison with the PID algorithm.