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. [ABSTRACT FROM AUTHOR]