采煤机开关磁阻调速系统的无位置传感器控制技术

为实现采煤机控制的数字化，提高采煤机控制的可靠性，解决采煤机无反转启动问题，对采煤机调速系统进行了无位置传感器控制技术的研究，建立了无位置传感器开关磁阻调速系统的硬件和控制模型，研制了无位置传感器控制系统及其实验平台，进行了控制系统的位置精度检测、负载特性和样机测试。试验结果表明：所设计的无位置传感器控制系统，转子位置的估计位置与真实位置之间误差较小，转子位置观测精度很高；负载实验中，对开关磁阻电机的加速和减速进行了测试，其电流、磁链、转子脉冲和角度波形可以较好的进行相切换，并可以很好的控制电机转矩，表明系统控制性能较好；样机测试中，控制系统可以正确的控制采煤机左、右牵引电机，证明了无位置传感器控制系统的可行性和可靠性。

Control technology for no-position sensor of shearer switched reluctance motors drive

The hardware and control models of the Switched Reluctance Motors Drive(SRD) were developed to realize the digitization and improve the reliability of the shearer,and to solve the problem of the shearer without reversal run.The control system and the experiment platform for no-position sensor of shearer SRD were manufactured,too.And the tests were done for the position precision detection of the rotor,the load characteristic and the prototype measuring.The experiment results indicate that the error between the estimated position and real position of the rotor is smaller in the designed no-position sensor control system,there is no reversal run of the system according the designed shearer control system with no-position sensor;the two-phase current of stator A and B are impelled at the same time,which indicates the detection precision of the rotor is higher;the acceleration and deceleration tests of the SRM are done in the loading experiment,the phase switch of the parameters(current,flux-linkage,rotor impulse,rotor angle) are better,and the torque of the SRM is controlled accurately by the system,which indicates the control performance of the system is better;and the right and left SRM are controlled correctly by the system in the prototype measuring,which indicates that the no-position sensor control system is feasible and reliable.