57 type stepping motor which good _ encoder stepper motor
stepper motor applications in industrial manipulator:
industrial manipulator is an imitation of human action, and to set program, locus and requirement instead of hand grasping a porter, operating mechanical and electrical integration of automation devices running tool.
stepper motor is a pulse signal is converted into linear displacement or angular displacement of the actuator. Stepper motor output displacement is proportional to the number of input pulses, and its speed and input the number of pulses per unit time ( The pulse frequency) Is proportional to the steering and pulse distribution to the stepper motor is related to the phase sequence of each phase winding. So as long as the number of control instruction pulse, frequency and phase sequence of motor winding current, can control the output of the stepper motor displacement, velocity and direction. Stepping motor has better control performance, its start, stop, reverse, and any other operation mode changes can be made within the minority pulse, and can obtain high control accuracy, thus has been widely used.
control system of PLC is used to produce control pulse, through the PLC programming a certain number of square wave pulse output, control the turning Angle of stepping motor and servo control of feeding, at the same time by programming control pulse frequency to control servo feed speed. Circular pulse distributor will be programmable controller output pulse according to the control of step motor power sequence assigned to the corresponding windings. Circular pulse distributor can be divided into circular allocator software and hardware is circular allocator. PLC software circular distributor, that is, using the software programming for output signals in turn. For step motor power requirement dozens to hundreds of volts, several to dozens of Ann's ability to drive, so drive on output pulse amplification should be used. Three-phase stepper motor with PLC control method is simple, high reliability. With PLC control stepper motor technology, so change the control parameters is very convenient. Just change the corresponding part of the PLC program.
that's application in industrial manipulator of the stepper motor is introduced, for any number of step motor, can be used on the design method of a simple, easy to reduce the footprint of PLC I / 0 interface, interface with PLC is more convenient, so in the PLC control of stepping motor control system not only reduce the workload of the control system design, greatly shorten the development cycle and save development costs, and improve the flexibility and reliability of the control system, is of high popularization and practical value.
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