유공압시스템학회논문집 (Transactions of The Korea Fluid Power Systems Society)

유공압건설기계학회 (The Korean Society for Fluid Power and Construction Equipment)
권호 표지

비례제어밸브용 디지털 앰프.컨트롤러에 대한 연구

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

  • 이재천 (계명대학교 기계자동차학과) ;
  • 고재욱 (계명대학교 지능형자동차학과) ;
  • 권태황 (계명대학교 지능형자동차학과) ;
  • 신행봉 ((주) SG Servo)
  • 투고 : 2010.12.03
  • 심사 : 2010.12.22
  • 발행 : 2011.03.01
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초록

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.

키워드

참고문헌

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