| According to the related standards of hydraulic cylinder and hydraulic pump, the hydraulic test system's software and hardware are designed on the analysis and studying of the test bed of hydraulic comprehensive performance based. The hydraulic cylinder type test and pump factory test could automatically be completed by the test and inspection system.The testing system is consists of hydraulic control system, loading system and PLC control system. The electro-hydraulic proportional control technology is used to realize control pressure and flow in remote. The new ways of testing breakaway pressure characteristic, load efficiency and internal leakage are came up with. Using AME Sim software to construct hydraulic system's simulation model, and the system's dynamic and static characteristics could be got from the simulation results. The result represents the test platform's testing methods and control countermeasures are rational. The loading test bench uses to attach two cylinders in horizontal line, one is used to test, the other is used to offer load. This kind of loading system could reflect the actual conditions. Electrical control system adopts industrial personal computer as controller and collects pressure, flow and temperature through data acquisition card. The data is tackled by the program in the industrial personal computer.The research is focused on the PLC control system. From the point of practical application, the way of choosing PLC's type is introduced. The allocating method of PLC's contacts is expounded according to hydraulic system's principle and control system's commissions. And taking proof pressure test as an example to explain the process of the PLC's working.The test bed's testing system and inspecting system get to the anticipated goal from the factory's actual using result. All tests could be completed by manual manipulation or automatic manipulation. The test bench has the characteristic of accurate results and high reliability system. Besides, the testing system could apply in kinds of cylinders and pumps, and it provides as the equipment for testing cylinder and pump, it also provides a technical reference for similar testing structure. |
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