Research on High-Performance Distributed Current Loop Control for Multi-Motor Precision Motion Control

Aiming at the problems of heavy computational burden, long control delay and low multi-motor synchronization accuracy in traditional centralized control architecture, a high-performance distributed current loop control method for multi-motor systems is proposed. This method implements a distributed architecture by delegating the current loop control to slave control nodes, designs a composite control algorithm integrating adaptive PI regulation, feedforward decoupling compensation and delay prediction, and establishes a multi-motor cooperative control mechanism based on virtual spindle and cross-coupling. Experimental results show that compared with traditional methods, the proposed method improves the current loop bandwidth by 45%, response speed by 40%, multi-motor synchronization accuracy by 73%, and reduces the main controller CPU occupancy by 59%, effectively solving the problems of fast response and precise synchronization in multi-motor precision motion control.