永磁同步电机新型矢量控制

为消除交流伺服系统运行易受电机参数变化和负载扰动等不确定性的影响，使其动态响应和抗扰能力能很好地兼顾，提出了一种基于预测控制的新型矢量控制方案．该方案引入自动微分法，使预测控制中泰勒级数计算变成简单的数值运算．选择系统误差为二次型性能指标，并对性能指标和永磁同步电机数学模型进行泰勒展开，把求解雅克比矩阵问题转化为求解泰勒级数的灵敏度．结合Levenberg-Marquardt算法对永磁同步电机进行速度控制，运用德斯拜思实时仿真系统进行半实物仿真实验验证．实验结果表明，所设计的控制器提高了系统鲁棒性，整个控制系统具有较好的动、静态特性．

New vector control of the permanent magnet synchronous motor

This paper presents a new vector control, which overcomes drawbacks of the conventional AC servo system. The novel concept is based on predictive control and introduces the automatic differentiation method to make the calculation of the Taylor coefficients into a simple numerical calculation. The permanent magnet synchronous motor(PMSM) model and a quadratic performance index of the system error are expressed by the Taylor expansions. Then solving the Jacobian matrix is transformed into solving the sensitivity of the Taylor coefficients. Combined with the Levenberg-Marquardt algorithm, the concept has been developed by a new speed controller of PMSM. Results of dSPACE real-time simulation show that the designed controller improves the system robustness, and has good dynamic and static characteristics.