| Modern science and technology is achieving rapid development,Mechanical equipment using electro-hydraulic servo system plays an increasingly important role in the international competition.However,electro-hydraulic servo system fault types are diverse,the cause of the fault is complicated.Real-time monitoring and fault diagnosis of hydraulic fault state is transformed from theoretical research to practical application,a lot of reliability verification is required.If the test is carried out in engineering practice,the required period is long and the cost is high.Therefore,at the present stage of practice,hydraulic faults are carried out on a hydraulic test stand.Based on this idea,In this paper,a electro-hydraulic servo system fault simulation test bench is designed,which a variety of hydraulic fault can be simulated.First of all,this paper analyzes the causes of fault of some common hydraulic system faults,and summarizes these common hydraulic fault factors and fault characteristics.Then,the fault mechanism of hydraulic pump fault,hydraulic cylinder fault,pressure oil filter fault and so on are described in detail.In the following paper,the general design flow of electro-hydraulic servo system fault simulation test bench is expounded,including the design of the hydraulic pump station,the design of the hydraulic system diagram of the fault simulation test bench,the design of the parameters of the relevant parts of the hydraulic system of the test bench,The specific design of the function of the control station,anti-interference design of measurement and control system and measurement and control system hardware IPC and data acquisition card specific parameter selection process.At the end of this paper,the data acquisition and control software of the electro-hydraulic servo system fault simulation test bench is compiled by Lab VIEW.After the hydraulic fault test is determined,the various sensor data can be recorded selectively on the fault simulation test bench. |
PDF Full Text Request