CAJ | 학술논문

提出了一种前置级采用两级串联固定阻尼孔的双喷嘴挡板水压伺服桥路模型,并对其进行了参量敏感性分析.探讨了喷嘴挡板位移、阀芯运动速度与阀芯两端压力的关系;运用正交设计方法研究了喷嘴直径、串联固定阻尼孔直径、阀芯直径及其运动速度、喷嘴挡板与喷嘴之间初始距离等参量对水压桥路特性的影响.结果表明,喷嘴直径以及喷嘴与挡板之间中位距离越小,阀芯与阀套之间配合间隙越大,阀芯直径越大,阀芯与阀套之间叠合长度越短,压力源压力越高,桥路控制的线性度越好;对于采用二级节流的水压伺服桥路,第一级固定阻尼孔直径越小,第二级固定阻尼孔直径越大,喷嘴前端流道直径越小,阀芯与阀套之间配合间隙以及阀芯直径越大,桥路响应就越快.这些研究结果为水压伺服阀样机的研制奠定了理论基础.
제출료일충전치급채용량급천련고정조니공적쌍분취당판수압사복교로모형,병대기진행료삼량민감성분석.탐토료분취당판위이、벌심운동속도여벌심량단압력적관계;운용정교설계방법연구료분취직경、천련고정조니공직경、벌심직경급기운동속도、분취당판여분취지간초시거리등삼량대수압교로특성적영향.결과표명,분취직경이급분취여당판지간중위거리월소,벌심여벌투지간배합간극월대,벌심직경월대,벌심여벌투지간첩합장도월단,압력원압력월고,교로공제적선성도월호;대우채용이급절류적수압사복교로,제일급고정조니공직경월소,제이급고정조니공직경월대,분취전단류도직경월소,벌심여벌투지간배합간극이급벌심직경월대,교로향응취월쾌.저사연구결과위수압사복벌양궤적연제전정료이론기출.
A new type of double nozzle-flapper water hydraulic servo bridge model is developed,in which the two mndem fixed dampers are adopted as prepositive dampers.The parameter sensitivity analysis for the hydraulic bridge is carried out.The relationship among the flapper displacement,the spool speed and the pressure at the two ends of the spool is investigated.The orthogonal design is employed to study the influence of the physics factors on the characteristics of the hydraulic bridge,such as the diameter of the nozzle,the diameters of the two tandem fixed dampers,the spool diameter and its sliding speed,the initial clearance between nozzle and flapper.The results reveal that(1)the smaller initial clearance between nozzle and flapper,the larger diam eter of spool and the clearance between spool and valve body,the shorter overlap length of spool and valve body,and the higher system pressure,will lead to the better linearity of the control characteristics for the water hydraulic bridge;(2)for hydra ulic bridge of water servo valve including the two-stage dampers,the smaller first damper diameter,the larger second damper diameter,the smaller pipe diameter before the nozzle,the larger diameter of spool and the clearance between spool and valve body,will bring the higher dynamic response in the water hydraulic bridge.These research results will lay the theoretical foundation for the development of water hydraulic servo valve.