Three models of hybrid stepping motor

W pracy podjęto porównanie funkcjonalnego działania trzech modeli silnika skokowego z punktu widzenia występowania i oddziaływania tłumienia elektromagnetycznego. Porównanie przeprowadzono na przykładzie silnika skokowego hybrydowego reprezentowanego kolejno przez model ruchu obrotowego o wymuszeniu dyskretnym, model elektromagnetyczny oraz model ruchu obrotowego z uwzględnieniem tłumienia elektromagnetycznego.Stepping motors are electromechanical devices which convert electrical pulses into discrete mechanical movements. The shaft of a stepping motor rotates in discrete step increments when electrical command pulses are applied to it in the proper sequence. The speed of the motor shafts rotation is directly related to the frequency of the input pulses and the length of rotation is directly related to the number of input pulses applied. The value of the frequency of the input pulses does not depend on the shaft position, so stepping motors use open-loop control. It is very important to use correct mathematical model for computer simulation during simulation investigation of the electrical drive with stepping motor. The simplest mathematical model of the stepping motor is a model of discrete mechanical movement. But it does not take into consideration the electromagnetic damping produced by induced voltage. It is possible to use the full electromagnetic model of a stepping motor, but it is often very difficult. Particularly difficult is modelling of the winding band. Authors show that it is possible to use the simple mathematical model of discrete mechanical movement which takes into consideration the electromagnetic damping without necessity of modelling of the winding band