积分型扩张状态观测下无刷直流电机转矩脉动自动抑制  

Automatic Suppression of Torque Ripple in Brushless DC Motors Under Integral Expansion State Observation

作　　者：黄先帜 HUANG Xianzhi(Chenzhou Technician College,Chenzhou Hunan 423000,China)

机构地区：[1]郴州技师学院,湖南郴州423000

出　　处：《微电机》2025年第1期21-25,共5页Micromotors

摘　　要：受无刷直流电机运行过程稳定性不强的影响,在设计无刷直流电机转矩脉动自动抑制方法时,通常会出现因电机转矩状态估计不准确导致方法的抑制性能不佳。对此,现提出积分型扩张状态观测下无刷直流电机转矩脉动自动抑制方法。通过计算无刷直流电机的电压方程、电磁转矩方程、电机运行方程,构建无刷直流电机数学模型,由此,对电机扩张状态模型进行构建,并设计积分型扩张状态观测器,从而对电机转矩脉动状态估计,根据估计的转矩状态值,对电机转矩脉动出现的原因进行分析,从而设计相应的抑制策略。通过上述的设计,完成对无刷直流电机转矩脉动自动抑制方法的设计。实验结果表明,积分型扩张状态观测下无刷直流电机转矩脉动自动抑制方法在实际应用中抑制性能较好。Due to the weak stability of the operation process of brushless DC motors,when designing automatic suppression methods for torque ripple in brushless DC motors,it is common to encounter poor suppression performance due to inaccurate estimation of motor torque state.A method for automatic suppression of torque ripple in brushless DC motors under integral expansion state observation was proposed.By calculating the voltage equation,electromagnetic torque equation,and motor operation equation of a brushless DC motor,a mathematical model of the motor was constructed.Based on this,the motor expansion state model was constructed,and an integral expansion state observer was designed to estimate the motor torque ripple state.Based on the estimated torque state value,the causes of motor torque ripple were analyzed,and corresponding suppression strategies were designed.Through the above design,complete the design of an automatic suppression method for torque ripple of brushless DC motors.The experimental results show that the automatic suppression method for torque ripple of brushless DC motors under integral expansion state observation has good suppression performance in practical applications.

关 键 词：积分型扩张状态观测器 无刷直流电机 转矩脉动 自动抑制 抑制方法 方法设计 

分 类 号：TM361[电气工程—电机] TP272[自动化与计算机技术—检测技术与自动化装置]