实时ADI仿真下感应电机全阶观测器的研究

Real-time simulation of ADI under full order observer of induction motor

针对当前无速度传感器的控制方法中,存在低频时无法稳定运行、转速估算不精准、计算量偏大等问题,利用鲁棒性控制理论、线性矩阵不等式(LMI)来选择观测器的增益,推导了符合稳定性与收敛性要求的自适应律。并在此基础上,优化设计了转子速度和定子电阻能同时观测的自适应全阶磁链观测器,以此来对转子速度进行准确估算,确保电机在全速范围内稳定运行。用MATLAB对自适应全阶磁链观测器进行模型仿真,最后以实时ADI半实物仿真试验系统验证了在实际运用中自适应全阶磁链观测器的设计在全速范围内准确估算转速的可行性,且有良好的抗负载扰动能力。

Speed senseless vector control system is that the speed estimate,so an accurate estimate of speed is particularly important. In the current control method of speed sensor,the presence of low frequency cannot be stable operation. Speed estimate is not accurate, is too large computational problems. In this paper,the robust control theory,linear matrix inequality（ LMI） are selected the observer gain it derived adaptive law in line with the stability and convergence requirements. And on this basis,the optimized design of the rotor speed and stator resistance can observe simultaneously adaptive full-order flux observer,in order to accurately estimate the rotor speed. With MATLAB for adaptive full order flux observer model simulation,and finally,ADI semi-physical real-time simulation test system is verified in the practice design of the adaptive full order flux observer at full speed range accurately estimate the rotational speed of feasibility,and has a good ability to resist load disturbance.