LABORATORY BENCH FOR THE RESEARCH OF ALGORITHMS MICROPROCESSOR CONTROL SYSTEMS OF STEPPER MOTORS

Electric drives based at stepping motor give high torque at low angular speed of the rotor and realize positioning without feedback sensors. At the same time, the oscillatory processes may lead to adverse events, when the rotor turns by one step, in particularly, to reduction of torque and loss of step. With the development of microprocessor and semi-conductor technology there are new algorithms for controlling stepper motors, which should be checked, debugged and evaluated the effectiveness of their application. Therefore, it is actual task to develop a universal laboratory bench allows to investigate working capacity and the effectiveness of the control algorithms stepper motor previously on the model and after on the real object. Research methods are mathematical modeling and physical experiment. Designed experimental unit allows to investigate stepping motor control algorithms when changing moment of inertia and static moment of resistance for open and feedback control systems. Received simulation model and proved its adequacy. That simulation model takes into account the moment due to the magnetic field of the rotor, allowing to explore new control algorithms based on the current control in stepping motor phases.