Automatic zero-adjustment device and zero-adjustment method for electric steering gear

Abstract

The invention relates to an automatic zero adjustment device for an electric steering engine. The automatic zero adjustment device comprises a controller, a proximity switch, a proximity switch support and an extension clamping device; the controller is respectively connected with the proximity switch and the electric steering engine; the extension clamping device comprises a base and a lengthenedrod body, the base is clamped on an output shaft of the electric steering engine, and the lengthened rod body is fixedly connected with the base; when the output shaft of the electric steering enginerotates and drives the base to rotate and the lengthened rod body reaches a triggering range of the proximity switch, output level of the proximity switch turns over, the controller controls the output shaft of the electric steering engine to stop rotating, and mechanical zero adjustment is completed; and the controller is used for acquiring an output voltage value of a sensor, rotating the sensor and stopping rotation of the sensor when an alarm gives an alarm, thus electrical zero adjustment is completed. By using the proximity switch, the extension clamping device, the controller and the alarm, automatic mechanical zero adjustment of the electric steering engine as well as automatic interpretation and hint when a zero position of the sensor is adjusted into position are realized, and efficient and precise zero adjustment of the electric steering engine is improved.

Description

technical field [0001] The invention belongs to the field of electric servo mechanisms, and in particular relates to an automatic zeroing device for an electric steering gear and a zeroing method thereof. Background technique [0002] The zero adjustment of the electric steering gear is a work that adjusts the position of the output shaft of the steering gear and the sensor to make the angle of the output shaft deviate from a certain reference axis within the required range when the steering gear is powered on. The zero adjustment work of the electric steering gear mainly includes mechanical adjustment. There are two steps of zeroing and electrical zeroing. Mechanical zero adjustment refers to turning the output shaft of the electric steering gear to make the output shaft stay at a position within a certain angle range based on a certain reference. Electrical zero adjustment is a work performed after the mechanical zero adjustment is completed. Electrical zero adjustment re...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an electric steering gear automatic zeroing device and its zeroing method, which solves the problems of electric steering gear mechanical zeroing and electrical efficient and accurate automatic zeroing, no longer depends on human judgment, high efficiency and reliability good sex

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