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As hydraulic technology involves mechanical , microelectronics , and control of the three related areas , so when the hydraulic system fails , it is characterized by complex, difficult to rule out the comprehensive and strong , how to quickly and accurately identify the point of failure has become the forefront of research projects . Fault diagnosis technology through research , analysis of the current diagnostic methods , a combination of gray theory and parameter measurement diagnostic methods , namely GM-P () theory by GM-P () theoretical to build gray system data model proposed the longitudinal prediction method for single-point and multi- lateral matching combined diagnostic techniques to achieve the online prediction and diagnosis function of hydraulic system failure , to quickly anticipate and be able to quickly find the system point of failure , and the cause of a problem and provides fault exclusion method. Constructed based the gray theory hydraulic station failure prediction and diagnosis system for the various parts of the organic combination of the research part of the thesis : First, the preparation of the hydraulic system diagnosis fieldbus platform , followed by the the fieldbus transmission system , the establishment of the hydraulic system that scene between bus system , with the fieldbus communication production process the scene and control equipment and higher control management ; Finally , computer data gray analysis and gray color treatment , to establish the fault database using ACCESS , application of gray control theory , Grey Comprehensive Evaluation of the results is displayed to the user quickly gray pattern recognition, predictive failure , and given the point of failure . ASP.NET as a system development tools , in this paper , was the development of the detection system , and under the premise of the small sample size , the the gray diagnostic approach to troubleshooting hydraulic system , and finally through the experimental test , to prove it has good validity , feasibility , and to promote practical.
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