【摘要】 为了提高系统的稳定性和响应速度,将模糊控制技术用于永磁同步电动机控制中,提出了一种新的模糊控制方案.引入零矢量控制,对模糊控制规则进行简化.仿真实验结果表明,与一般直接转距控制相比,模糊直接转距控制的磁链轨迹更接近于圆形;转速能在很短的时间内上升到稳定值;当受到外部干扰时,转距能快速、平稳地变化,达到新的稳态值;电流稳态波形的高频成分大大减少.更多还原

【Abstract】 In order to improve the system stability and raise the response speed, a new control scheme, fuzz logic-based direct torque control, for a permanent magnet synchronous motor (PMSM) was put forward. In this scheme, zero voltage space vectors are introduced to simplify fuzzy control rulers. Simulation results show that compared with the common direct torque control, the flux locus of the fuzzy direct torque control is more approximatively a circle, and the rotational speed can reach up to a stable value quickly. Subjected to an external disturbance, the torque for the proposed scheme can change smoothly and reach to a new stable value. Furthermore, the high frequency components of the stable current decrease greatly.更多还原