Strip shape signal error compensation method based on strip shape detection roll installation accuracy
A technology of installation accuracy and compensation method, which is applied in the field of automatic measurement of steel rolling machinery and equipment, and can solve the problems that the plate shape detection signal is greatly affected and affects the stability of the rolling process, etc.
Inactive Publication Date: 2013-04-10
YANSHAN UNIV
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[0003] Among the many factors that affect the detection accuracy of the shape detection signal, the installation accuracy of the detection roll has a greater impact on the shape detection signal, especially the single-sided wave, and even affects the stability of the rolling process in severe cases
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[0032] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0033] Taking the 1050 rolling mill of a certain factory as an example, the strip shape control means are rich, with functions such as tilting, bending, and lateral shifting. According to the actual working conditions on site, the influence of the errors on the shape of the plate was analyzed from the two aspects of the horizontal inclination and the vertical inclination, and the shape of the typical cold-rolled strip was detected and analyzed in real time by using the shape meter. Data compensation processing. Figure 4 and Figure 5The influence law curves of horizontal inclination and vertical inclination on plate shape are shown respectively.
[0034] (1) Influence of horizontal inclination on plate shape
[0035] Fixed vertical tilt amount 0mm, Figure 4 The curves of tensile stress deviation and plate shape index corresponding to diffe...
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The invention discloses a strip shape signal error compensation method based on strip shape detection roll installation accuracy, which comprises the following steps of: constructing a strip shape signal compensation model aiming at strip shape detection roll installation errors based on a geometrical relationship between a strip shape detection roll and a guide roll or a winding drum and a cold rolled steel strip shape detection theory; and aiming at two installation ways, i.e. a fixed wrap angle way and a dynamic wrap angle way, establishing a corresponding tensile stress dynamic deviation calculation formula to compensate online strip signals of cold rolled steel strips in real time. By considering the influence of the strip shape detection roll installation accuracy on original strip shape signals, the online strip shape detection accuracy of a contact-type strip shape detection instrument is improved to the utmost extent, the actual strip shape situation of the online cold rolled steel strips is more really reflected, the strip shape control performance of a rolling mill is improved, and stable, reliable and real-time strip shape data can be provided for a strip shape closed-loop control system.
Description
technical field [0001] The invention relates to the field of automatic measurement of steel rolling machinery and equipment, in particular to a shape signal error compensation method based on the installation accuracy of shape detection rollers suitable for cold-rolled steel strips, aluminum strips, copper strips and other strip products. Background technique [0002] The cold-rolled strip shape problem has always been one of the on-site problems that plague iron and steel enterprises. During the production process, cold-rolled strip products are often of low grade due to poor shape, and there are many quality objections, which bring serious economic losses to the enterprise. Therefore, the plate shape problem is a practical problem on the spot of cold-rolled strip steel that needs to be solved urgently. The premise of solving the flatness problem is first of all to accurately detect the actual flatness status of the strip steel online, and provide accurate real-time flatnes...
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Login to View More IPC IPC(8): B21B38/02B21B37/28
Inventor 杨利坡李荣民于丙强刘宏民
Owner YANSHAN UNIV