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- W2334356688 abstract "Recently, pneumatic flow control valves having high responses have been developed and are being wide-ly used. It is very important to know the characteristics of the valves for structuring pneumatic servo systems. The method for measuring the dynamic characteristics of the valves has yet to be established, because of the difficulty of the unsteady flow rate measurements of the compressible fluids.In this study, simple methods to measure the input-output characteristics and the frequency characteristic of the flow control valves using an isothermal chamber are proposed. The isothermal chamber is a chamber in which steel wool is stuffed into a normal chamber to make the heat transfer area larger, and could almost simulate an isothermal condition. Therefore, the flow rate could be obtained only by measuring the pressure in the chamber. Two types of servo valves and proportional control valves were tested using the proposed method. At the same time, the spool displacement of the valves were measured. The effectiveness of the proposed method was confirmed by comparing the results obtained from the proposed method and the spool displacement of the valves. In addition, it could be clarified that the frequency response could be measured up to a frequency of 140Hz by this method." @default.
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- W2334356688 date "1997-01-01" @default.
- W2334356688 modified "2023-10-16" @default.
- W2334356688 title "Characteristics Measurements of the Pneumatic Flow Control Valves." @default.
- W2334356688 doi "https://doi.org/10.5739/jfps1970.28.116" @default.
- W2334356688 hasPublicationYear "1997" @default.
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