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A Study on a Digital Amplifier.Controller for Proportional Control Valve  

Lee, J.C. (계명대학교 기계자동차학과)
Koh, J.U. (계명대학교 지능형자동차학과)
Kwon, T.H. (계명대학교 지능형자동차학과)
Shin, H.B. ((주) SG Servo)
Publication Information
Transactions of The Korea Fluid Power Systems Society / v.8, no.1, 2011 , pp. 19-25 More about this Journal
Abstract
This study presents the design of digital amplifier.controller for a proportional control valve and the development of PID discrete control scheme by using RCP(Rapid Controller Prototyping) system. RCP system is the device to embed the control code developed in PC into the microcontroller on-site. Ramp input test using the digital amplifier.controller developed in this study was carried out for the proportional control valve of domestic production and Bosch Rexroth respectively. The instability problem occurred around maximum displacement of localized valve spool at ramp input test was solved by supplementing offset current to the duty ratio of PWM(Pulse Width Modulation) driving signal to the solenoid. The comparison of test results between localized proportional control valve and Bosch Rexroth's product shows that the characteristics obtained by ramp input test and static flow gains are alike each other. Two valves are about the same in dead bands and hysteresis characteristics.
Keywords
Proportional Control Valve; Micro Controller Unit(MCU); RCP(Rapid Controller Prototyping); Pulse Width Modulation;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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