摘要
异步电机直接转矩控制能产生快速且良好的鲁棒性响应, 采用自适应磁链观测器, 取代传统的积分器, 构造了新型的速度估计器, 并结合模糊控制器, 实现对定子磁链准确观测和系统无速度传感器运行状态。基于DSP (TMS320LF2407A) 核心芯片建立数字化控制系统。仿真与实验表明, 该系统对电机定子磁链的观测精度高, 转速估算准确, 尤其在低速下能保持很高的性能。
Direct torque control(DTC) of ac drivers is known to produce quick and good robust response. An adaptive stator flux observer is presented to replace the classical integrator. A new speed estimator is adopted and combined with fuzzy controller, realizing the accurate observation of the stator flux and speed sensorless DTC. Digital control system is set up based on DSP(TMS320LF2407A). Simulation and experiment show that this method gives satisfied estimation of stator flux and rotor speed, especially in lower speed range.
出处
《计算机测量与控制》
CSCD
2005年第5期461-464,共4页
Computer Measurement &Control
