Filtering method for tracking magnetic control pendular submerged arc welding seam

Abstract

A filtering method for tracking a magnetic control pendular submerged arc welding seam aims to solve the technical problems that an existing filter is quite low in filtering accuracy and low in efficiency, the judgment range of a software filtering algorithm is large, efficient filtering cannot be better achieved, only one judgment can be conducted, or the filtering range accuracy cannot be improved and thus the operating time of a microcomputer is affected. According to the key points of the technical scheme, filtering is conducted effectively through a hardware filter with three-level accuracy and a bridge rectifier circuit in sequence, the first level of the hardware filter with three-level accuracy is a passive RC filtering circuit with the accuracy level being 10 KHZ, the second level of the hardware filter with three-level accuracy is a front end multi-feedback Chebyshev filtering circuit with the accuracy level being 100 HZ, and the third level of the hardware filter with three-level accuracy is a rear end multi-feedback Chebyshev filtering circuit with the accuracy level being 10 HZ; the bridge rectifier circuit converts the trough of the sine wave output by the hardware filter into the crest and converts the crest into digital quantity through A/D; the digital quantities transmitted into a single-chip microcomputer are accumulated, averaged and judged many times. The filtering method is mainly used for automatic welding tracking.

Description

technical field [0001] The invention relates to a filtering method for seam tracking of magnetically controlled oscillating submerged arc welding, which is applied to the field of automatic welding tracking. Background technique [0002] At present, the filter used for oscillating submerged arc welding in the prior art can only perform relatively rough filtering, and the precision that can be achieved is low. The required wave frequency cannot be obtained more accurately, and the efficiency of a single active filter module is low and the precision is poor. The software filtering algorithm has a large judgment range, cannot perform effective filtering well, and can only judge once or cannot improve the accuracy of the filtering range, which affects the computing time of the microcomputer. Contents of the invention [0003] Aiming at the problems of efficiency and technology, the present invention provides a filtering method for seam tracking of magnetically controlled osci...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of efficiency and technology, the present invention provides a filtering method for seam tracking of magnetically controlled oscillating submerged arc welding, which solves the problem that the above-mentioned filter used for oscillating submerged arc welding can only be relatively rough. The accuracy that can be achieved is low, the required wave fre

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