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Method for eliminating gear clearance error influence and related product

A gear gap and gear technology, applied in electrical components, control systems, motor generator control and other directions, can solve problems such as instrument pointer indication errors, and achieve the effect of reducing correction time and eliminating inaccurate display.

Inactive Publication Date: 2020-11-10
SHANGHAI OUFEI INTELLIGNET VEHICLE INTERNET TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of this application is to provide a method and related products for eliminating the influence of gear clearance errors, so as to solve the problem that the existing instrument pointers are prone to indication errors

Method used

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  • Method for eliminating gear clearance error influence and related product
  • Method for eliminating gear clearance error influence and related product
  • Method for eliminating gear clearance error influence and related product

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Embodiment Construction

[0076] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application.

[0077] The embodiment of the present application provides a method for eliminating the influence of the gear gap error, which is used to eliminate the indication error caused by the gap between the first gear and the second gear of the stepping motor gear; so that the indication value of the automobile instrument is accurate, Improve driving experience.

[0078] Please refer to figure 2 , and synchronize the reference Figure 1a and Figure 1b , the method includes but is not limited to the following steps:

[0079] 101: Control the stepping motor to drive the first gear to rotate in the first direction, wherein, when the first gear rotates in the first direction, the first gear drives the second gear to rotate, and the pointer is connected to the second ge...

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Abstract

The invention relates to a method for eliminating gear clearance error influence and a related product. The method comprises the steps of controlling a stepping motor to drive a first gear to rotate in a first direction, wherein the first gear drives a second gear to rotate when the first gear rotates along the first direction, meanwhile, enabling a pointer connected with the second gear through apointer shaft to rotate along with the second gear; when the pointer rotates to a set threshold value, controlling the stepping motor to gradually drive the first gear to rotate along the second direction, wherein the second direction is opposite to the first direction; when it is determined that the pointer rotates again, recording the rotating step number N of the stepping motor at the moment that the pointer rotates again; and when it is determined that the rotation direction of the pointer is changed, controlling the stepping motor to move (N-1) steps firstly, so that indication is consistent with the actual rotation of the stepping motor. According to the present invention, instrument indication errors caused by gear inherent clearances can be eliminated, and instrument display is more accurate.

Description

technical field [0001] The present application relates to the technical field of automobiles. Background technique [0002] In the combination instrument of the car, the single-chip microcomputer is normally used to control the stepper motor to drive the instrument pointer to realize the instrument indication function, such as indicating the current vehicle speed and rotation speed. [0003] The single-chip microcomputer controls the stepping motor, with high precision and strong anti-interference ability. However, most meters do not compensate for stepper motor gear backlash. Considering the need for lubrication between the gears, the tolerance of the gear size, and the thermal expansion and contraction of the gears, etc., the gear gap has its rationality. [0004] But it is the existence of the gear gap of the stepping motor that also affects the accuracy of the instrument indication. Especially when the stepper motor changes direction every time, there will be gaps in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P8/38
CPCH02P8/38
Inventor 魏金春廖绍勇万善婷
Owner SHANGHAI OUFEI INTELLIGNET VEHICLE INTERNET TECH CO LTD
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