Synchronous control method for lifting hydraulic cylinder of continuous casting tundish
A technology for lifting hydraulic cylinders and synchronous control, which is applied in fluid pressure actuation devices, fluid pressure actuation system testing, fluid pressure actuation system components, etc., and can solve problems such as troublesome processing of synchronous control programs
Active Publication Date: 2020-06-16
MAANSHAN IRON & STEEL CO LTD
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Problems solved by technology
Based on this, for this new synchronous control method of continuous casting tundish lifting hydraulic cylinder, Maanshan Iron and Steel Co., Ltd. designed a synchronous control method based on the master-slave mutual following continuous casting tundish lifting hydraulic cylinder. valve, hydraulic cylinder body, etc.) needs to be out of operation, the processing of the synchronous control program of the lifting hydraulic cylinder in the continuous casting package is quite troublesome, not only to re-select a hydraulic cylinder as the master hydraulic cylinder, but also to synchronize each slave hydraulic cylinder The control program is modified
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[0038] The specific implementation of the present invention will be described in further detail below by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.
[0039] SUB is a subtractor; NSW is a "digital input switch" function block, when I='1', Y=X2, when I='0', Y=X1; NCM is a "value comparison" function block, When X1>X2, QU is '1', when X1=X2, QE is '1', when X1<X2, QL is '1'; RSR is the "RS flip-flop with R priority at the reset terminal" function block , when S is '1' and R is '0', Q is '1' and QN is '0', when S is '1' and R is '1', Q is '0' and QN is ' 1', when S is '0' and R is '0', Q and QN remain the same, when S is '0' and R is '1', Q is '0' and QN is '1'; RGJ is the "integrator" function block; PIC is the PI regulator function block; ADD is the adder; PDF is the "post-edge d...
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The invention discloses a synchronous control method for a lifting hydraulic cylinder of a continuous casting tundish. A 1# lifting hydraulic cylinder synchronous position deviation speed correcting unit and an n-th lifting hydraulic cylinder synchronous position deviation speed correcting unit modify position deviation between other hydraulic cylinders which exceed set range and the hydraulic cylinder which moves the slowest; if deviation between the two is continuously increased to a set synchronous control allowable deviation value, the 1# lifting hydraulic cylinder synchronous position deviation speed correcting unit and the n-th lifting hydraulic cylinder synchronous position deviation speed correcting unit control the hydraulic cylinder with highest moving speed to stop movement until position deviation between the two is smaller than set synchronous control allowable deviation again, so that synchronous movement of the lifting hydraulic cylinder of the continuous casting tundishis realized; moreover, during an operation period, the lifting hydraulic cylinder of the continuous casting tundish has relatively high fault tolerance, so that synchronous movement of the lifting hydraulic cylinder of the continuous casting tundish can be realized under conditions that the hydraulic cylinder has leakage, hydraulic element manufacturing precision is different and load is uneven.
Description
technical field [0001] The invention belongs to the technical field of electric control, and more specifically, the invention relates to a synchronous control method for a continuous casting tundish lifting hydraulic cylinder. Background technique [0002] The continuous casting machine tundish is usually moved synchronously by four hydraulic cylinders. For the synchronous control of the continuous casting tundish lifting hydraulic cylinder, the synchronous control method of the continuous casting tundish lifting hydraulic cylinder based on hydraulic four synchronous motors is mainly used at present, based on PI The general master-slave follow continuous casting tundish lifting hydraulic cylinder synchronous control method of regulator and servo valve, and the master-slave mutual follow continuous casting tundish lifting hydraulic cylinder synchronous control method based on PI regulator or non-PI regulator and servo valve. The synchronous control accuracy of the first two s...
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IPC IPC(8): F15B11/22F15B13/02F15B21/08F15B19/00
CPCF15B11/22F15B13/02F15B21/08F15B19/00
Inventor 叶光平王光亚吴坚钱晓斌张少全方长德
Owner MAANSHAN IRON & STEEL CO LTD