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Step electromotor control method and its device

A technology of stepping motors and control methods, which is applied in the direction of motor generator control, control systems, electrical components, etc., can solve the problems of easy step loss and poor control accuracy, and achieve the effect of preventing step loss and improving control accuracy

Inactive Publication Date: 2011-05-04
SHENZHEN H&T INTELLIGENT CONTROL
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0005] Although this solution can drive the stepper motor, its control accuracy is poor and it is easy to lose the step.

Method used

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  • Step electromotor control method and its device
  • Step electromotor control method and its device
  • Step electromotor control method and its device

Examples

Experimental program
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Embodiment Construction

[0026] refer to figure 1 , as shown in the figure, the processing process of a stepper motor control in this embodiment includes:

[0027] Step S01, that is, the starting step, outputs an electric pulse signal to the stepping motor to start the stepping motor. In actual implementation, the output port of the motor is set to a high level based on the 4ms pulse signal, and the 4ms timing is started, and after 4ms , clear the 4ms timer, add 1 to the 600ms timer, when the 600ms time is up, clear the 600ms timer and set the 600ms flag;

[0028] Step S02, that is, the working step, outputs an electric pulse signal to the stepping motor according to the pulse logic of the stepping motor to make the stepping motor rotate;

[0029] Step S03, i.e. the first judging processing step, judges whether the step angle is the same as the set value, if so, executes the following stop step, otherwise, executes the following second judging step;

[0030] Step S04, that is, the second judging pro...

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Abstract

The present invention discloses a method for controlling a stepping motor and an apparatus thereof. The method comprises the following steps: an actuating procedure for outputting an actuating signal to the stepping motor to actuate the stepping motor; a working step for outputting an electrical pulse signal according to an impulse logic of the stepping motor to rotate the stepping motor; and a first judgment processing step for judging whether a step angle of the rotation of the stepping motor is the same as a setting value or not, if so, outputting a low level to the stepping motor and executing a stopping step, or else executing a second judgment step; the second judgment processing step for judging whether the step angle is larger than the setting value or not, if so, controlling the motor to reverse one step, or else, controlling the motor to normally rotate one step; and a stopping step for outputting a stopping time-delay signal to the stepping motor, stopping the output of the electrical pulse signal to stop the stepping motor when the step angle is equal to the setting value or the stopping signal appears. The invention can effectively prevent the out of step phenomenon of the stepping motor and have high control precision.

Description

technical field [0001] The invention relates to motor control technology, in particular to a stepping motor control method and device thereof. Background technique [0002] A stepper motor is an open-loop control element that converts electrical pulse signals into angular displacement or linear displacement. In the case of non-overload, the speed and stop position of the motor only depend on the frequency and number of pulses of the pulse signal, and are not affected by the load change, that is, add a pulse signal to the motor, and the motor will turn a step angle. The existence of this linear relationship, coupled with the characteristics of stepper motors that have only periodic errors and no cumulative errors, makes it very simple to use stepper motors to control in the field of speed, position and other control. In the prior art, the stepper motor control steps are as follows: [0003] Working steps, according to the pulse logic of the stepping motor, output electric p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P8/00H02P8/22H02P8/24
Inventor 龙逸刘建伟首召兵
Owner SHENZHEN H&T INTELLIGENT CONTROL
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