State monitoring and failure diagnosis system for thick plate mill AGC servo valve

Abstract

The invention relates to a state monitoring and failure diagnosis system for a thick plate mill AGC servo valve. The system comprises a diagnosis operation module, a diagnosis result display module, an information input module, a historical data analysis module and a neural network training module, wherein the diagnosis operation module reads the text file to be tested, performs diagnosis and transmits the diagnosis result to the diagnosis result display module; the diagnosis result comprises the health degree tendency of the servo valve and the current operation state represented by the health degree; the information input module inputs the information of a new valve when the mill exchanges the new servo valve; the neural network training module is used for training the data of the new servo valve and inputting the result into a knowledge base; and the historical data analysis module can check the related information such as the historical operation state and the like of the selected valve. The system has the functions of automatically diagnosing state failure and storing and checking historical data and provides real-time guarantee for finding system failure and exchanging the servo valve timely so as to reduce loss caused by equipment failure to the maximum degree.

Description

technical field [0001] The invention relates to a rolling mill hydraulic AGC system, in particular to a thick plate rolling mill AGC servo valve state monitoring and fault diagnosis system. Background technique [0002] The plate and strip rolling mill is a metal pressure processing machine that makes the rolled piece pass through the rolls with a certain roll gap to produce the expected thickness of the plate and strip. In the strip rolling process, the dimensional accuracy of the plate thickness is the most important quality index that must be ensured. The hydraulic AGC system of the rolling mill is an important means for the control of the thickness accuracy and shape control of the modern plate and strip rolling mill. The AGC system compares the deviation between the measured plate thickness and the required rolled plate thickness, and adjusts the pressing cylinder through the control of the servo valve system to achieve the required exit plate thickness. [0003] The r...

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Problems solved by technology

However, the semaphore used in the above-mentioned patent is relatively simple, and the current operating state of the servo valve is not given, and performance degradation prediction is lacking.

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