Synchronous control method based on synchronous control system of cold bed stepper beam translation hydraulic cylinder
A translational hydraulic cylinder and synchronous control technology, applied in the direction of fluid pressure actuation system components, fluid pressure actuation devices, servo motors, etc., can solve problems such as asynchrony and short-term
Active Publication Date: 2018-11-16
MAANSHAN IRON & STEEL CO LTD
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Problems solved by technology
[0003] The embodiment of the present invention provides a synchronous control method based on the synchronous control system of the translational hydraulic cylinder of the cooling bed walking beam, which aims to solve the problem of the existing H-shaped steel four-section independent cooling bed walking beam translation synchronization control method. When the translation hydraulic cylinder has a large internal leakage during the translation process of the walking beam or the walking beam has a certain degree of jamming during the translation process, the slave translation hydraulic cylinder may have a short-term existence with the active translation hydraulic cylinder during the translation process. or always out of sync
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[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0027] figure 1 Schematic diagram of the structure of the active translation hydraulic cylinder synchronous control subsystem provided by the embodiment of the present invention, figure 2 The structural diagram of the synchronous control subsystem of the slave translational hydraulic cylinder provided for the embodiment of the present invention, for the convenience of description, only shows the parts related to the embodiment of the present invention.
[0028] Such as figure 1 and figure 2 As shown, LVM is the function block of "numerical out-of-tolerance detection". In the case of HY=0, when...
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The invention is suitable for the technical field of hydraulic transmission control, and provides a synchronous control method based on a synchronous control system of a cold bed stepper beam translation hydraulic cylinder. A driving and driven translation hydraulic cylinder synchronous deviation speed correcting unit corrects the position deviation, exceeding the set range, of driving and driventranslation hydraulic cylinders; if the deviation exceeds a synchronous position deviation allowed value, a driving translation hydraulic cylinder and slowest-movement driven translation hydraulic cylinder synchronous position deviation overlimit control unit or a driven translation hydraulic cylinder and driving translation hydraulic cylinder synchronous position deviation overlimit control unitcontrols the driving translation hydraulic cylinder or the driven translation hydraulic cylinder with high translation speed to decelerate to flatly move until the position deviation is located withinthe synchronous position deviation allowed value again; and when any translation hydraulic cylinder generates higher internal leakage in the stepper beam translation process or the stepper beam is blocked to a certain extent in the translation process, the driving and driven translation hydraulic cylinders can realize synchronous translation in the translation process.
Description
technical field [0001] The invention belongs to the technical field of hydraulic transmission control, and in particular relates to a synchronous control method based on a synchronous control system of a cooling bed walking beam translational hydraulic cylinder synchronous control system. Background technique [0002] H-shaped steel cooling bed (abbreviated as cooling bed) usually adopts walking beam method to place and move H-shaped steel. The walking beam of cooling bed has both whole section type and multi-section type (usually four sections). For multi-section walking beam ( Such as Maanshan Iron and Steel's large H-shaped steel four-section independent cooling bed walking beam), each section of walking beam uses an independent hydraulic cylinder to complete the translational movement. For the translational synchronous control of the four-section independent cooling bed walking beam of H-shaped steel, the commonly used control method is: select one of the four-section in...
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IPC IPC(8): F15B11/22F15B21/02
CPCF15B11/22F15B21/02F15B2211/326F15B2211/327F15B2211/6656F15B2211/71F15B2211/7656F15B2211/8646
Inventor 叶光平汪志远徐洪张昱
Owner MAANSHAN IRON & STEEL CO LTD