Abstract：The prestage of triplex redundance servo valve may be inconsistent and thus it has impact on the static and dynamic characteristics of the servo valve. A complete mathematical model of the triplex redundance servo valve with the prestage fluid power and dynamic characteristics of slide valve is presented. The influence of nozzle-baffle parameter inconsistency on the whole valve characteristic is analyzed. The three parameters considered are the stiffness of the spring tube, the stiffness of the force feedback rod and the vertical distance from the center of the spring tube to the center of the nozzle. The simulation results show that the dynamic performance of the servo valve is less affected when the parameter deviation is less than 5%, and the dynamic and static performance of the servo valve has a linear relationship with the parameter deviation. When the parameter deviation continues to increase, the performance of the servo valve is accelerated, which verify approximately the triple relation with the parameter deviation.
陈博,延皓,仇立波,姚磊,李红岩. 三余度伺服阀前置级不一致性影响研究[J]. 北京交通大学学报, 2018, 42(1): 120-.
CHEN Bo, YAN Hao, QIU Libo, YAO Lei, LI Hongyan. Study on the influence of prestage inconsistency of triplex redundance servo valve. Beijing Jiaotong University, 2018, 42(1): 120-.