State Key Laboratory of Fluid Power and Mechatronic Systems,Zhejiang University,Hangzhou 310027,China;
College of Mechanical Engineering,Zhejiang University of Technology,Hangzhou 310023,China;
Key Laboratory of Special Purpose Equipment and Advanced Processing Technology,Ministry of Education&Zhejiang Province,Zhejiang University of Technology,Hangzhou 310023,China;
High speed on/off valve(HSV); Digital hydraulic technology(DHT); Switching pilot control; Twin spools valve; Independent metering control(IMC);