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Stepping motor drive using _ automation principle of stepping motor

by:Zhenyu      2020-10-26
Principle of stepper motor driver is the operation of the stepping motor to one electronic electric drill speed reducer drivers, the electric drill speed reducer is the stepper motor drive, it is the control system of the pulse signal into angular displacement of stepper motor, or: each send a pulse signal control system, through the drive to spin stepper motor step Angle. So the speed of the stepper motor is proportional to the pulse signal frequency. Stepper motor driver fails, will affect the normal use of stepper motor, here we use some examples to illustrate the exclusion of stepping motor drive failure.

once started stepper motor drives, drives an external fuse burned, equipment can not run. Stepper planetary gear motor is the electrical pulse signal into angular displacement or linear displacement of open loop control motor, is a modern digital process, the main components of control system, has extensive application. In the case of the overload, motor speed, stop position depends only on the pulse signal frequency and pulse number, and not affected by load change, when the stepper driver receives a pulse signal, it is driving a stepper planetary gear motor according to set the direction of a fixed point of view, called & other; Interval Angle & throughout; , its rotation is based on the Angle of the fixed step by step. Can be controlled by controlling the pulse number of angular displacement, so as to achieve the purpose of accurate positioning; As well as by controlling the pulse frequency to control motor rotation speed and acceleration, so as to achieve the purpose of regulating. Maintenance personnel during the inspection, they found a power ( Refers to the object of the work done in a unit time) Tube is damaged, but since there is no data, lost the role of the tube, thought is driven power forward, put on a power tube, after electrify, insurance burned again, change the tube is damaged.



the maintenance engineers patrol, initial analysis is correct, namely insurance repeatedly fusing, drive certainly exist an unusually large current, and check out the damage of power tube. Stepper motor is the electrical pulse signal into angular displacement or linear displacement of open loop control planetary gear motor, is a modern digital process, the main components of control system, has extensive application. In the case of the overload, motor speed, stop position depends only on the pulse signal frequency and pulse number, and not affected by load change, when the stepper driver receives a pulse signal, it is driving a stepper motor according to set the direction of a fixed point of view, called & other; Interval Angle & throughout; , its rotation is based on the Angle of the fixed step by step. Can be controlled by controlling the pulse number of angular displacement, so as to achieve the purpose of accurate positioning; As well as by controlling the pulse frequency to control motor rotation speed and acceleration, so as to achieve the purpose of regulating. But is not clear for the role of the tube. In fact the pipe for step motor drive power, step motor for high voltage starting, thus to withstand high voltage large current. Static inspection, found that pulse annular divider circuit, the power supply to the side resistance is very small, but also not short circuit. According to the number of components in circuit power supply to the side resistance and power consumption analysis should not be so small, so doubt existing components of the circuit to be damaged.



power on patrol, found a chip abnormal fever. After power will cut off the power supply pin of this chip and static checking, power supply to the ground resistance increases should belong to normal. Measuring the chip power to the ground resistance is small. Check the chip model for a non-standard type, manual, many did not. Confirmed by the line analysis, for the main components of the plate, the annular pulse distributor.



in order to further confirm the problem of the chip, first of all in withstand voltage current power is pretty stepper motor power drive pipe, to restore the chip power supply pins, replace (with leds circuit With a substance in place of another ( For the strong to replace the position of the weak) ) Stepping motor's winding for a simulated load. Stepper motor is the electrical pulse signal into angular displacement or linear displacement of open loop control motor, is a modern digital process, the main components of control system, has extensive application. In the case of the overload, motor speed, stop position depends only on the pulse signal frequency and pulse number, and not affected by load change, when the stepper driver receives a pulse signal, it is driving a stepper motor according to set the direction of a fixed point of view, called & other; Interval Angle & throughout; , its rotation is based on the Angle of the fixed step by step. Can be controlled by controlling the pulse number of angular displacement, so as to achieve the purpose of accurate positioning; As well as by controlling the pulse frequency to control motor rotation speed and acceleration, so as to achieve the purpose of regulating. After electrify, leds are bright, namely each winding are electricity, it is not in conformity with the requirements of the line input step pulse response, thus confirm the chip has been damaged. But not on the chip market, under the condition of the drive casing space allows, adopted the combination line which is already at hand d flip-flop and the combination of the nand gate design an annular pulse generator, production on a small PCB, dismantling the original chips will small PCB by pin is installed on the original chip bonding pad. Still using light-emitting diodes as simulation load, after electrify plus one step pulse according to the phase sequence in turn to shine. Demolition of simulation load, access to the host, electricity, equipment running normally.


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