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FU Linjian
KONG Xiaowu
QIU Minxiu
State Key Laboratory of Fluid Power Transmission and Control,
Zhejiang University,
Hangzhou 310027, China |
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TEST METHOD OF HIGH-SPEED
ON-OFF VALVE DYNAMIC
CHARACTERISTICS
Abstract:
According to the valve port features of high speed on-off valve and its actions, the valve port can be simplified into an a-type half bridge construction. A method that tests the dynamic characteristics of the high speed on-off valve by the output pressure signal of the a-type half bridge is proposed. Having analyzed the factors related to the dynamic characteristics of an a-type half bridge, a rule for designing the outlet chamber’s volume is worked out. According to the rule, a test stand is built to test the self-developed high-speed on-off valve. From the test results, it can be seen that with the outlet chamber’s volume con-trolled by the rule the rise time of the pressure signals driven by signals with different frequencies changes very little. The test results conform to the simulation results, which proves the correctness of the method.
Key words:
High-speed on-off valve Dynamic characteristics Test method |