A disadvantage of the drive of the stepping en-gine is an error of regulation. Thus there is a need in ensuring static and dynamic accuracy of process of stepping engine positioning. It is necessary to develop mathematical models allowing describing adequately transition processes, arising at the change of operating mode of the step drive for the design of drives of step engines. The nature of transition process in many respects is decided by control system in the PID-regulator. The imitating model of a control system with feedback of the step engine of the road printer was developed in the program MATLAB&Simulink environment. Paramet-rical synthesis of the regulator was executed by means of functional Function Block Parameters block: Simulink environment PID Controller. The synthesized parameters of model of the continuous PID-regulator of model of a control system of the stepping engine of the road printer provided the set indicators of quality of transition process. The time of regulation made 0.036 s. Transition process was without reregulation, i.e. important property for the road printer. Modeling of dynamic processes al-lowed installing the minimum size of reaction time of the continuous PID-regulator in the drive of the step engine.
stepping motor, dynamic modeling, mathematical model, PID-regulator, transfer func-tion
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