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Abstract: A
new kind of high-speed on/off valve is recommended. It has two-stages
structure, in which a special valve spool and a giant magnetostrictive
actuator as electric- mechanism switchover sets are used for the pilot
stage, so the switch speed and frequency of the valve are greatly
increased. The second stage of the valve has a ball valve, so its
sealing property and respond speed is well. The result of experiment
shows that the time of switch is 8～10 ms and the maximum flow has get to
120 L/min. Comparing with the piezoelectric high-speed on-off valve,
this valve can get a more output flow and the fall of consume of
electric power and is a kind of up-and-coming high speed on-off valve.
Key words: Giant
magnetostrictive actuator PWM High-speed on-off valve
CLC No: TG244.3
江苏省教育厅自然科学基金资助项目(03KJD460035). Received 30226,
received in revised form 20030730
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