Magnetic Levitation Actuator Tracking Control For Electrical-Discharge Machines

This paper discusses the design and application of a controller that enables an actuator to have 5-degrees of freedom through the application of magnetic levitation. The authors propose a new type of magnetic levitation actuator for electrical-discharge machines (EDMs) and have designed a feed-forward and sensor compensator controller for the system. The practicality of the system was verified through experimentation, in which tracking error of ±1µm was proven. The gap controller designed consists of a conventional drive system and a local actuator module for EDMs. Its efficiency has been confirmed in experiments.