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TECHNICAL PAPERS

Experimental Based Analysis of the Pressure Control Characteristics of an Oil Hydraulic Three-Way On/Off Solenoid Valve Controlled by PWM Signal

[+] Author and Article Information
Heon-Sul Jeong

School of Mechanical Engineering, Kunsan National University, Kunsan, Chonbuk 573-701, Koreae-mail: hsjeong@kunsan.ac.kr

Hyoung-Eui Kim

Hydraulic Power Transmission Research Lab., Korea Institute of Machinery & Materials, Yusung, P.O. Box 101, Taejun, 305-600, Koreae-mail: khe660@kimm.re.kr

J. Dyn. Sys., Meas., Control 124(1), 196-205 (Jul 20, 2001) (10 pages) doi:10.1115/1.1433483 History: Received July 20, 2001
Copyright © 2002 by ASME
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References

Figures

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Normalized mean pressure due to duty ratio change
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Normalized mean pressure due to carrier frequency change
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Normalized pressure fluctuation due to carrier frequency change
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Normalized pressure fluctuation due to duty ratio change
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Experimental setup of the oil hydraulic three-way on/off solenoid valve system
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Pressure response due to duty ratio change
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Pressure response due to carrier frequency change
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Mean pressure due to duty ratio change. (a) Experiment, frequency at 2∼10 Hz, 2 Hz interval, (b) calculation, frequency at 2∼10 Hz, 2 Hz interval, (c) experiment, frequency at 20∼150 Hz, 20 Hz interval, (d) calculation, frequency at 20∼150 Hz, 20 Hz interval.
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Pressure ripple due to duty ratio change. (a) Experiment, frequency at 2∼10 Hz, 2 Hz interval, (b) calculation, frequency at 2∼10 Hz, 2 Hz interval, (c) experiment, frequency at 15∼50 Hz, 5 Hz interval, (d) calculation, frequency at 15∼50 Hz, 5 Hz interval.
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Mean pressure due to carrier frequency change. (a) Experiment, duty ratio at 10–90%, 10% interval, (b) calculation, duty ratio at 10∼90%, 10% interval.
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Pressure ripple due to carrier frequency change. (a) Experiment, duty ratio at 10∼50%, 10% interval, (b) calculation, duty ratio at 10∼50%, 10% interval, (c) experiment, duty ratio at 60∼90%, 10% interval, (d) calculation, duty ratio at 60∼90%, 10% interval.
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Normalized mean pressure due to supply pressure change. (a) Carrier frequency at 2∼10 Hz, 40 Hz interval, (b) carrier frequency at 20∼140 Hz, 40 Hz interval.
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Normalized pressure ripple due to supply pressure change. (a) Carrier frequency at 2∼10 Hz, 2 Hz interval, (b) carrier frequency at 15∼45 Hz, 10 Hz interval.
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Schematic diagram of the oil hydraulic three-way solenoid valve system
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Timing chart and normalized pressure response
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Relation between the compensated time t* and time t
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Normalized flow curve at a=78 s−1,p0=0.8

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