摘要
转动惯量是永磁同步电机速度控制模型的重要参数,其辨识值是否准确影响控制器参数设定,从而影响了速度控制的动态性能。针对这一问题,提出了一种改进的转动惯量模型参考辨识算法,算法以简化的永磁同步电机运动方程为模型,分析了负载转矩和摩擦系数的偏差对辨识结果的影响,针对性地提出了对于电机加减速的不同阶段、以反馈速度和加速度作为判断依据的补偿方法。算法实现简单,其收敛性和快速性得到仿真和实验结果的验证,是永磁同步电机伺服系统转动惯量辨识的一种有效方法,具有较好的工程应用价值。
As an important parameter of the speed control model of permanent magnet synchronous motor, the accuracy of the identification value of the inertia affects the dynamic performance of speed response. It is difficult to identify the value of inertia accurately and in real time, which is used for the setting of the parameters of the speed controller. To solve this problem, an improved model reference identification algorithm of inertia is proposed in this paper. First, the algorithm simplifies the motion model of permanent magnet synchronous motor by ignoring the load torque and using the friction coefficient. Then, the influence＇ of the load torque and the deviation of friction coefficient are analyzed. Therefore, a compensation method is presented utilizing speed and acceleration as feedback determination at different stages of acceleration and deceleration. This simple algorithm, whose convergence and rapidity are verified in simulation and experimental results, is an effective engineering approach of inertia identification of permanent magnet synchronous motor.
出处
《电工技术学报》
EI
CSCD
北大核心
2013年第2期126-131,共6页
Transactions of China Electrotechnical Society
基金
国家863科技重大专项计划(2009ZX04010-012-03)
863计划(2010AA044401)资助项目
关键词
永磁同步电机
转动惯量
辨识
补偿
Permanent magnet synchronous motor, inertia, identification, compensation
