한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)
- 제12권7호
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- Pages.148-157
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- 1995
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- 1225-9071(pISSN)
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- 2287-8769(eISSN)
고속전자밸브를 이용한 유압전동장치의 속도 제어에 관한 연구
A Study on Speed Control of Hydrostatic Transmission Using High Speed Solenoid Valve
- Park, S.H. (Mechanical Technology Research Center, Busan National University) ;
- Lee, J.K.
- 발행 : 1995.07.01
초록
This study deals with controlling the speed of Hydrostatic Transmission (HST) system throuth the control of pumping stroke of positive displacement pump using high-speed solenoid valve controlled by digital closed loop PWM method. The method which was done in this study is as follows: First, we modified original positive displacement pump and designed pumping stroke control system of HST by using the high-speed solenoid valve. Second, after experimenting static and dynamic characteristics on each signal flow, we identified system parameter of approximated model. Finally, to control the speed of HST, we controlled the angle of the swash plate of positive displacement pump by controlling the pressure in the control cylinder chamber. Test which was carried out in the laboratory shows that transient and steady state response could be improved by PID controller.
키워드