Vibration suppression method for steel rail welding head straightness detection system

A detection system and flatness technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as non-compliance with high-speed control systems, increase mechanical structure rigidity, and increase system inertia, and achieve the scope of application Wide, improve accuracy, reduce the effect of noise signal
CN106599440AInactive Publication Date: 2017-04-26SHANGHAI UNIV OF ENG SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI UNIV OF ENG SCI
Publication Date
2017-04-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a vibration suppression method for a steel rail welding head straightness detection system. The vibration suppression method comprises the following steps of S1, establishing a servo motor mathematical model, performing Laplace conversion on the servo motor mathematical model, and combining with a current ring to obtain a servo motor transfer function; S2, establishing a drive system mathematical model according to a relation between working platform displacement and servo motor output displacement, and performing Laplace conversion on drive system mathematical model to obtain a transfer function of a working platform; and S3, an input instruction, after being subjected to input shaping in the steps S1 and S2, and PID regulation in a servo motor control link, controlling the drive system to move. By adoption of the vibration suppression method, noise signals in detection data and data processing difficulty can be reduced while the detection efficiency and detection result accuracy are improved; and the vibration suppression method is wide in applicable range, simple in design, and relatively high in industrial application value.
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Description

technical field

[0001] The invention relates to a method for suppressing vibration of a rail welding head flatness detection system, and belongs to the technical field of rail detection. Background technique

[0002] In recent years, high-speed railways have developed rapidly in China. The operating mileage of high-speed railways has exceeded 19,000 kilometers, which has greatly improved the carrying capacity of China's railways and promoted the rapid development of China's economy. The long rail is welded by the 100-meter short rail. The straightness of the welding head is related to the safety and stability of the train operation. In the production and daily inspection and maintenance of the long rail, the straightness detection of the welding head of the rail is of great significance.

[0003] At present, the methods of rail inspection mainly include magnetic particle inspection, eddy current inspection, infrared inspection, and machine vision inspection. Compared with o...

Claims

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