Piezoelectric hydroelectric servo-valve structured by baffle-nozzle valve
A new type o f hydroelectric servo valve is developed, which uses piezoelectric stack with big stroke as the electric to mechanics converter and builds the baffle-nozzle valve with piezoelectric and nozzle. The static characteristics and dynamics characteristics of servo-valve are measured and the effect of opening-loop and closing-loop on hysteresis are compared. The tests results show that in the condition of closing-loop, flux hysteresis of the servo-valve is less than 0.15％ , and the resolution is less than 0.03％. The width of frequency is 900Hz. The factors influencing the characteristics of the servo-valve are analyzed in light of these results. An improved approach is put forward. This servo-valve is characterized by simple structure, quick response, high resolution as well as extraordinary dirtresistance and so on.
Piezoelectric elements Servo-valve The static characteristics The dynamic characteristics
Shiju E Zhigang Yang Chuanliang Shen
Institute of Machinery Equipment and Measurement & Control Technology, Zhejiang Normal University, J College of Mechanical Science and Engineering, Jilin University, Changchun 130025, China
国际会议
杭州
英文
1004-1008
2009-04-08（万方平台首次上网日期，不代表论文的发表时间）