【作者】 张勇军； 郝春辉；

【Author】 ZHANG Yongjun,HAO Chunhui Engineering Research Institute,University of Science and Technology Beijing,Beijing 100083,P.R.China

【机构】 北京科技大学冶金工程研究院；

【摘要】 为改善感应电机直接转矩控制中转矩设定环节对速度变化和负载扰动的响应能力,获得更好的速度控制效果,本文提出一种带有负载转矩观测功能的广义预测控制器用于感应电机直接转矩控制的电磁转矩计算,通过建立驱动系统的受控自回归积分滑动平均(CARIMA)模型,推导出了能够使下一次采样时刻的实际转速以最优特性跟踪下一时刻参考转速的广义预测控制律,文中设计的负载转矩观测器作为预测算法的扰动补偿环节,目的是进一步增强速度控制的抗干扰能力。仿真和实验结果表明,通过合理选择控制器参数,带有转矩预测功能的直接转矩控制系统在转速跟踪和抗扰能力得到一定改善。更多还原

【Abstract】 A generalized predictive control(GPC) law with a disturbance observer for induction motor is presented.The controlled auto-regressive moving average(CARIMA) model for induction motor drive system was established based on the analysis of the dynamic equation,and the load torque is considered as an unknown disturbance and it is estimated by a nonlinear observer.By combination of the direct torque control system,the GPC algorithm was applied to configure the torque reference. The stability of the whole system can be achieved by simple design parameters.The simulations show satisfactory performance of the proposed controller for speed tracking,and speed response and the disturbance rejection are successfully achieved.更多还原