Plate shape signal compensation method for failure measurement channel of plate shape gauge
A measurement channel and signal compensation technology, which is applied in the field of cold-rolled strip steel, can solve problems such as signal distortion and large shape signal compensation errors, and achieve the effect of improving fidelity and improving the quality of shape control
Inactive Publication Date: 2014-05-07
WISDRI ENG & RES INC LTD
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Problems solved by technology
[0006] The technical problem to be solved by the present invention is to provide a flatness signal compensation method for the failure measurement channel of the flatness meter, which can effectively solve the flatness signal compensation of the flatness meter failure channel that is often encountered when using the traditional interpolation compensation method The technical problems of large errors and signal distortion leading to serious shape defects can improve the quality of shape signal compensation in the failure channel of the shape meter, and provide a strong guarantee for improving the shape control quality of cold-rolled strip steel
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[0081] The flatness signal compensation method of the flatness meter failure measurement channel provided by the present invention, such as figure 1 As shown, the specific working process of the inventive method is to collect rolling process information such as the width of the cold-rolled strip, the size of each measuring channel of the shape meter, and the deviation of the strip, so as to determine the effective coverage of the shape meter of the cold-rolled strip. The number of channels is numbered sequentially; according to the location of the failed measurement channel, different compensation methods are selected to compensate the plate shape signal of the failed measurement channel. The flatness distribution law and trend, selectively introducing the parabolic interpolation method to replace the traditional linear interpolation method, can significantly improve the fidelity of the flatness compensation signal of the failure measurement channel, and improve the flatness co...
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The invention relates to a plate shape signal compensation method for a failure measurement channel of a plate shape gauge, which comprises the following steps of: colling rolling process information such as the width of a cold-rolled steel strip, the size of each measurement channel of the plate shape gauge, the steel strip deflection quantity and the like so as to determine the number of the channels of the plate shape gauge, which are effectively covered by the cold-rolled steel strip and carry out sequence numbering on the channels of the plate shape gauge; according to different positions of the failure measurement channel, selecting different compensation modes to carrying out compensation of a plate shape signal of the failure measurement channel. In the compensation method, by analyzing the plate shape distribution rule and trend between adjacent measurement channels at both sides of the failure measurement channel, a parabolic interpolation method is selectively introduced to replace a conventional linear interpolation method so as to improve the fidelity of the plate shape compensation signal of the failure measurement channel and provide powerful guarantee for improving the plate shape control quality of the cold-rolled steel strip. The invention effectively solves the technical problems generated when the conventional interpolation compensation method is used. The plate shape signal compensation quality of the failure channel of the plate shape gauge can be improved. The powerful guarantee is provided for improving the plate shape control quality of the cold-rolled steel strip.
Description
technical field [0001] The invention relates to the field of cold-rolled steel strips, in particular to a flatness signal compensation method for a flatness meter failure measurement channel. Background technique [0002] With the rapid development of domestic and foreign equipment manufacturing industries, downstream users have increasingly high requirements for the shape quality of cold-rolled strip products, especially for industries such as high-end automobiles and high-end IT product manufacturing. Therefore, the shape quality of cold-rolled strip steel has become one of the main technical indicators for evaluating strip steel products. From the perspective of control technology, cold-rolled strip shape control technology is a highly complex technology that integrates multi-disciplinary knowledge such as materials, rolling process, equipment, hydraulic transmission, control and computer, and the mutual coupling between control system parameters. Major iron and steel co...
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IPC IPC(8): B21B38/02
Inventor 解相朋赵菁
Owner WISDRI ENG & RES INC LTD