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A method and device for detecting the pitch error of an abs ring gear

A technology of ABS ring gear and pitch error, which is applied in the field of ABS ring gear pitch error detection and its device, can solve the problem of high speed accuracy and achieve the effect of improving test accuracy and eliminating cumulative pitch error

Active Publication Date: 2018-07-27
刘文奇 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a measurement method and a corresponding measurement device that can eliminate the influence of the rotation speed in view of the current detection technology that requires high precision of the rotation speed

Method used

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  • A method and device for detecting the pitch error of an abs ring gear
  • A method and device for detecting the pitch error of an abs ring gear
  • A method and device for detecting the pitch error of an abs ring gear

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: Acquisition device: including an ABS ring gear rotating platform, an ABS sensor, a rotational speed measuring device, a signal acquisition circuit and a calculation and analysis module.

[0029] The ABS ring gear rotating platform is used to drive the ABS ring gear to rotate;

[0030] The ABS sensor is used to measure the voltage change generated when the ring gear cuts the magnetic induction line and output an analog signal;

[0031] The rotational speed measuring device is used to measure the rotational speed of the ABS ring gear; in this embodiment, it is a rotary encoder installed on the motor central shaft of the ABS ring gear rotary platform.

[0032] The acquisition board of the signal acquisition circuit is composed of two parts: the core board and the bottom board. The main components of the core board are: 1. Main control chip FPGA; 2. Analog-to-digital conversion chip AD7606; 3. USB2.0 communication chip CY7C68013; 4. Memory chip K4S511632B -TC...

Embodiment 2

[0096] Embodiment 2: Acquisition device: including an ABS ring gear rotating platform, an ABS sensor, a rotational speed measuring device, a signal acquisition circuit and a calculation and analysis module.

[0097] The ABS ring gear rotating platform is used to drive the ABS ring gear to rotate;

[0098] The ABS sensor is used to measure the voltage change generated when the ring gear cuts the magnetic induction line and output an analog signal;

[0099] The rotational speed measuring device is used to measure the rotational speed of the ABS ring gear; in this embodiment, it is a rotary encoder installed on the motor central shaft of the ABS ring gear rotary platform.

[0100] The acquisition board of the signal acquisition circuit is composed of two parts: the core board and the bottom board. The main components of the core board are: 1. Main control chip FPGA; 2. Analog-to-digital conversion chip AD7606; 3. USB2.0 communication chip CY7C68013; 4. Memory chip K4S511632B -TC...

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Abstract

The invention discloses a method and device for detecting a pitch error of an ABS ring gear, and the method comprises the steps: putting the ABS ring gear in a magnetic field for rotation; collecting the time when each tooth cuts a magnetic induction line in the magnetic field through a sensor, and also collecting the corresponding rotating speed of each tooth; obtaining a single-tooth pitch through multiplying the cutting time of each tooth by the radius of the ring gear and the rotating speed; and calculating a single-pitch error. When the method and device are used for testing, the method and device exerts very small impact on the measurement results of the single-pitch error and an accumulative pitch error even if the rotating speed changes a lot, thereby solving a problem that the testing is not accurate because a conventional mode is affected by the change of the rotating speed.

Description

technical field [0001] The invention relates to a method and a device for detecting the pitch error of an ABS ring gear by using magnetic induction. Background technique [0002] In the prior art, the detection of the pitch error of the ABS ring gear mainly uses a digital acquisition card to collect the signal output by the ABS sensor when it rotates, and analyzes the collected signal, such as the magnetic induction detection of the ABS ring gear disclosed in Chinese patent CN 102359755 A Method of pitch error. The main indicators are: maximum peak of N pole, maximum peak of S pole, average peak value of N pole, average peak value of S pole, maximum output voltage, output voltage ratio, tooth shape error, single pitch error, cumulative pitch error, etc., depending on Types of ABS sensors. [0003] The existing test technology uses the change period of the voltage signal output by the ring gear rotating in the magnetic field to calculate the pitch error of each tooth. There...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/14
CPCG01B7/146
Inventor 刘文奇夏功勋
Owner 刘文奇