Calculation Features of Speed- torque Characteristic of Tape Winding Torque Motor with Rotor Non-uniform Magnetic Field

Abstract

The speed-torque characteristics of a tape winding torque motor is considered in the case of distributed magnetic flux of the rotor pole. The present studies have shown the possibility of the numerical simulation in COMSOL of the simul-taneous action of both the current from the power source and the currents caused by the EMF of rotation. It is pro-posed to set the EMF of rotation indirectly using the internal current density – “Inward current flow” option. Numeri-cal studies have shown the possibility of using the superposition principle in the motor characteristics determination in the operating mode. An appropriate combination of starting mode and braking mode allows obtaining the desired motor speed-torque characteristics. Numerical studies of the motor prototype showed the linearity of the speed-torque characteristics set. A large number of calculated values given in the tables is both a proof of the correctness of the proposed ideas, and is the basis for further research, in particular, torque pulsations during rotor rotation. The re-search results allow assessing the expected characteristics of the motor model and are an integral part of the devel-oped design policy of the torque motor with the tape winding stator.