摘要
超声波电机动态模型是实现其高性能转速控制的前提。设计基于模糊逻辑的辨识建模方法,建立了超声波电机系统动态模糊模型。在设计实验获取建模所需数据的基础上,采用等分区间法确定了模型结构,进而利用最小二乘法辨识得到了模型中的待定参数。模型输出与实验数据的对比表明,所建模糊模型精度较高,反映了驱动电压幅值、频率与电机转速之间的非线性动态关系,可以用于超声波电机性能分析与转速控制器设计。
Ultrasonic motor＇s dynamic model is the precondition for the realization of speed control with high performance. The dynamic fuzzy model of ultrasonic motor system was worked out using fuzzy reasoning modelling method. The experiment was designed to obtain the data used for model identification. Based on the data, proportional spacing method was adopted to determine the structure of model. Then, the coefficients of the model were obtained using least squares method. Comparison between experimental data and calculated output of the model proves that, the model has good precision, and it can reflect the nonlinear relationship among the amplitude of driving voltage, frequency and rotating speed. The fuzzy model can be used to analyze performance of motor, and also can be used to design speed controller of ultrasonic motor.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2011年第33期109-114,共6页
Proceedings of the CSEE
基金
河南省基础与前沿技术研究计划(092300410164)~~
