| In this paper, the control theory of the permanent magnet synchronous motor (PMSM) and its mathematic model are fully studied. And an all digital PMSM AC servo system is developed. Base on it, the theory and experiments of the positional servo system, the adaptive control and the fault detecting system are researched.In this paper, a PMSM AC servo system with voltage space vector control is implementation, which is based on the analysis of the basic rationale and the learning from the research fruit of this research field. This system with good dynamic and static performance includes TI's DSP—TMS320F240 as central control unit, intelligent power module (IPM) as the power switch unit, and PMSM as actuator.To improve the servo performance, it is presented that is application of the two-degree-of-freedom on PMSM servo system. The simulation and the experiment results prove the effective of the strategies.To enhance the performance and buildup the robust of the system, the model-reference adaptive control (MRAC) with the torque observer is introduced into the PMSM servo system. The results of simulation and experiment prove that the algorithm is rapid and easy to implementation. It is efficient to enhance the performance and buildup the robust of the servo system. Furthermore, it is designed the fault detection circuit and the recovery processing flow with the purpose to enhance the reliability and maintainability of the system. |
