Response Improvement in Hydraulic Cylinder Force Control System by Using a High Speed On-Off Electro-Magnetic Valve

고속 온.오프 전자밸브를 사용한 유압실린더 힘 제어계의 응답성 개선

High speed on-off electro-magnetic valves have been used for pressure control or flow control in automotive or construction machine servomechanisms. These systems require quicker valve switching speed to improve control preciseness. The authors designed and manufactured an electric valve driver with quick response characteristics by using 3 power source type valve driver concept. In experiments by using a hydraulic system incorporating the new valve driver, the new driver shortened the switching lag time from 5 ms to 1.3 ms. And also the new driver showed excellent position tracking control performances.