Research on Double-Motor Synchronous System Based on AC Servo System

Double-motor synchronous control system using master-slave structure based on AC servo system is researched in this paper. For the synchronous system, the instructions are input into the master system, and then the slave system can follow in time. In this paper, firstly, the advantages and disadvantages of double-motor system using master-slave structure are discussed. Then, the cumulated position error during the instructions transmission is resolved by translating the position or speed instructions into absolute position instructions, and the same period control strategy that mechanical cycle and current cycle is executed in one control cycle is also proposed, by which the instructions are executed synchronously. At last, the foundation of improved position control cycle and the influence of feed forward compensation are researched. The synchronous control system researched in this paper has simple structure, high response and extensive use.