摘要
研究了一种基于矢量控制的模型参考自适应异步电机无速度传感器方案。该方案利用转子磁链的电压方程和电流方程分别计算转子磁链,用电压模型的输出作为转子磁链的实际值,用电流模型的输出作为转子磁链的估算值,将电压模型与电流模型误差信号送至辨识计算法自适应机构中,通过自适应机构的调节来产生控制信号,进而调节电流模型中的参数,最终实现输出误差为零。对该方案进行了仿真比较,结果表明,提出的方案在高低速均能准确检测到转子的位置和速度,具有良好的动静态运行性能。
In this paper, an amended method of estimating the rotor speed about method reference adaptive system （MRAS） on the basis of vector control is put forward. The scheme calculates rotor flux respectively using voltage equation and current equation of rotor flux, using the output of voltage mode] as the actual value of the rotor flux, using the output of the current model as the estimated value of the rotor flux. The error signal of the voltage model and the current model is sent to the error identification method adaptive mechanism, control signal is generated through the regulation of the adaptive mechanism, and then the parameters in the current model are adjusted to achieve that the output error is zero. Comparative study of simulation is presented in this paper. The results show that novel method is capable of estimating the rotor position and speed precisely under the condition of high or low speed, it also possesses good static and dynamic performance.
出处
《农业装备与车辆工程》
2015年第6期5-8,共4页
Agricultural Equipment & Vehicle Engineering
基金
南京工程学院科研创新基金面上项目(CKJB201311)
