A method for testing the rotation of a stepping motor of an automobile instrument

Abstract

The invention discloses a method for testing rotation of a motormeter stepper motor. The method includes the following steps that a pointer of the stepper motor of a motormeter rotates according to types of sine waves, a line and trapezoidal waves; the pointer of the stepper motor of the motormeter rotates according to a rotation type defined by a user; defects in the rotating process of the meter stepper motor are detected, and measures are taken for remedy. Due to the fact the various rotation types are adopted for the method, the defects existing in the early-stage software design of the meter stepper motor can be detected, qualified detection of the meter before leaving a factory is ensured, potential danger existing in the later using process of the meter is reduced, and the problem that potential danger may be caused in the later using stage because of the single detection mode that only an assigned value instructing the corresponding position is input when an existing motormeter stepper motor is detected is solved. Besides, the method for testing rotation of the automobile instrument stepper motor is easy to operate, improves the percent of pass of the manufactured automobile and is reliable.

Description

technical field [0001] The invention belongs to the technical field of automobile instrument testing, in particular to a method for testing the rotation of a stepping motor of an automobile instrument. Background technique [0002] With the popularity of automobiles in people's daily life, the production of automobiles is increasing year by year, and the demand for automobile instruments is also increasing. The input signals of traditional automobile instrument speedometers and tachometers are frequency signals. Production testing In the process, a fixed frequency is basically input, and then the value indicated by the instrument is checked. This test method is difficult to find some defects in the stepper motor of the instrument during the software design and development process, such as pointer jitter, sticking, movement, etc. Phenomenon, may bring certain problems to subsequent use. [0003] With the increasing maturity of CAN bus technology, modern automotive instrument...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiment of the present invention is to provide a method for testing the rotation of the stepping motor of the automobile instrument, aiming at solving the single detection of the current stepping motor on the automobile instrument simply using the input specified value and indicating to the corresponding position. mode, which may cause hidden dangers in later use

Images