Method, apparatus and system for controlling stepper motor speed

A technology of stepping motor and control method, applied in the direction of control system, motor generator control, electrical components, etc., can solve the problems of pointer sticking or sudden change, poor coordination of smoothing effect and sensitivity, etc., and achieve smooth display and improved smoothness Effects and Sensitivity Effects

Active Publication Date: 2009-02-25
BYD CO LTD
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  • Abstract
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Problems solved by technology

[0006] The purpose of the embodiments of the present invention is to provide a method for controlling the speed of a stepping motor, which aims to solve the problem of poor coordination between the smoothing effect and sensitivity of the pointer of the stepping motor in the prior art, and the phenomenon of pointer sticking or sudden change is easy to occur. question

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  • Method, apparatus and system for controlling stepper motor speed
  • Method, apparatus and system for controlling stepper motor speed
  • Method, apparatus and system for controlling stepper motor speed

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] In the embodiment of the present invention, according to the relationship between the target distance and the reference distance of the stepping motor, the speed of the instrument pointer movement is controlled. When the target distance is greater than the reference distance, the stepping motor is controlled to perform a variable acceleration movement. When the target When the distance is less than the reference distance, the stepper motor is controlled to perform variable deceleration motion.

[0032] figure 1 The implementation process of the stepping motor speed control provided by the e...

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Abstract

The invention is applied to the display instrument field, and provides a speed control method of a stepping motor, a device and a system. The method comprises the steps as follows: the object distance of the stepping motor is calculated according to the current location and the target location of the stepping motor; whether the object distance is greater than the configured reference distance is judged; when the object distance is greater than or equals to the reference distance, the stepping motor is controlled to do variable accelerated motion; when the object distance is less than the reference distance, the stepping motor is controlled to do variable decreasing motion. The stepping motor is controlled to do variable accelerated motion or variable decreasing motion through judging the relation between the object distance and the reference distance, thereby leading the display of an instrument pointer to be smoother, and effectively improving the phenomenon such as pointer clamping stagnation or saltation, etc. caused by bad accordance between smooth effect and sensitivity of the pointer.

Description

technical field [0001] The invention belongs to the field of display instruments, in particular to a method, device and system for controlling the speed of a stepping motor. Background technique [0002] In the display instrument, there are generally two ways of traditional analog display and digital display. The digital display instrument adopts a stepping motor structure, and the analog or digital signals of all sensors are converted into digital signals for driving the stepping motor. After being processed by the central processing unit (Central Processing Unit, CPU), the driving signals are sent to their Stepper motor, this kind of display instrument driven by all-digital technology has high precision, and adopts a unified movement structure, so the realization cost is low. [0003] Controlling the rotation of the stepper motor requires three elements: direction, rotation angle and speed. For a drive power supply containing hardware, the direction depends on the level o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P8/00H02P8/14H02P8/22
Inventor 祖波王思豫
Owner BYD CO LTD
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