结合数字处理系统的离散化特点,推导出矿井提升机调速系统的转矩及磁链预测方程,并详细地分析了造成转矩脉动过大现象的原因。根据转矩和磁链误差查询离线开关表(LUT)获得有效电压矢量后,采用零矢量注入的方式对有效电压矢量的幅值进行修正,各矢量作用时间以下一采样点转矩脉动预测值最优为控制指标。搭建了基于“DSP+FPGA”的实验样机平台对上述PTC方法进行验证,结果表明控制方法能够有效地减小DTC系统低速段的转矩脉动,并获得恒定的开关频率,改善了传统矿井提升机DTC系统的控制性能。 Combined with the discretization characteristic of the digital processing system, the torque and flux linkage prediction equations of mine hoist speed control system are deduced. The reason of excessive torque ripple is analyzed in detail. After obtaining the effective voltage vector according to the torque and flux error inquiring off-line switch table (LUT), the amplitude of the effective voltage vector is corrected by zero vector injection, and the predicted value of torque ripple Excellent control indicators. The experimental prototype platform based on “DSP + FPGA” is built to verify the above PTC method. The results show that the control method can effectively reduce the torque ripple in the low speed section of DTC system and obtain a constant switching frequency and improve the traditional mine Hoist DTC system control performance.