The Research Of Distributed Multi-axis Linkage AC Servo Control System

Due to its high performance, the AC servo is used more widely in the field of motor speed control with high precision, and it has become one of the research hotspots in speed control in recent years. This dissertation researches the key techniques of distributed multi-axis AC servo control system, adopting the widely used permanent magnet synchronous motor as the controlled motor, and aims to achieve an AC servo multi-axis. The research covers the structure of distributed multi-axis AC servo control system, the content and realization of the protocol of upper and lower computer, the AC servo hardware system design, the structure and realization of vector control system of permanent magnet synchronous motor, and the experiments of distributed multi-axis AC servo control systemIn the field of control system structure:We propose an distributed multi-axis AC servo control system in this dissertation, which separates the function of the multi-axis control card (PMAC board) to be realized by IPC and servo respectively. This dissertation also sets up a distributed system with the AC servos as the nodes and IPC connect AC servos with RS485. In the field of hardware design:The AC Servo hardware system is an important part of the distributed multi-axis AC servo control system, and its performance affects the system volume, reliability and stability directly. The design of AC Servo hardware system based on DSP is studied in this dissertation. Through the analysis of the AC servo system hardware, an AC servo driving control hardware platform based on DSP is designed. This system drive permanent magnet synchronous motor mainly.In the field of control algorithm:Vector control is an advanced and reliable control algorithm for the permanent magnet synchronous motor. The decoupled control method of id*=0is put forward in this dissertation, and the adaptive fuzzy-PID control method is used to control speed loop. The control algorithm is proved by the simulations and experiments.Finally, A debugging based on upper and lower computer is carried out in this dissertation, with which the experiments of the distributed multi-axis AC servo control system are performed to prove the preciseness of the system design.