Abstract：The multi-motor synchronous working system has been widely used in industry and production, and its control structure and control strategy greatly affect the quality and efficiency of production. For different practical application scenarios, researchers have proposed many specific synchronization control schemes. Research on the response speed, synchronization accuracy, and robustness of dual-motor and even multi-motor cluster system synchronization control has become a hot topic. With reference to a large number of researches on synchronization control made by domestic and foreign researchers in recent years, a review of typical synchronization control methods is presented. Cross-coupling, adjacent coupling, relative coupling and other control structures are summarized. Based on simulation, the performance indexes differences of the three main structures are compared. The control strategies and optimization methods based on each control structure are sorted out. Then, the current research difficulties and existing solutions are summarized. Finally, the development of multi-motor synchronous motion control technology is summarized and prospected.
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