基于FTA的某飞行器液压伺服机构振荡故障分析  

Analysis of Oscillation Fault in Hydraulic Servo Mechanism of a Certain Aircraft Based on FTA

作　　者：钱占松 QIAN Zhansong(AVIC Nanjing Servo Control System Co.,Ltd.,Nanjing Jiangsu 210061,China;Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration,AVIC Jincheng Nanjing Engineering Institute of Aircraft Systems,Nanjing Jiangsu 210061,China)

机构地区：[1]中航工业南京伺服控制系统有限公司,江苏南京210061 [2]航空工业金城南京机电液压工程研究中心,航空机电系统综合航空科技重点实验室,江苏南京210061

出　　处：《机床与液压》2025年第5期152-159,共8页Machine Tool & Hydraulics

基　　金：工信部民用飞机专项科研基金(MJ-2016-S-54)。

摘　　要：以某飞行器液压伺服机构振荡故障为研究对象,利用FTA分析法找出问题原因并解决了该问题。建立故障树,完成对系统级、伺服阀级的故障定位;利用仿真手段说明伺服阀超调与否对伺服机构的影响,将机制表述清楚;将不同伺服阀调整至超调状态,开展联试,伺服机构振荡,充分完成了故障复现工作;将无超调的阀与伺服机构进行联试,在振动量值逐步增大的情况下,仍未谐振,验证措施有效;将同样的经验推至其他型号、其他单位,解决了同类质量问题隐患,大大提升了装备质量。Taking the oscillation fault of a certain aircraft hydraulic servo mechanism as the research object,the problem was thoroughly discovered and solved using FTA analysis method.A fault tree was established and fault localization at the system level and servo valve level was completed.The impact of servo valve overshoot on the servo mechanism was explained using simulation methods,and the mechanism was clearly described.Adjusting different servo valves to overshoot state,conducting joint testing,servo mechanism oscillated,and fault reproduction work was completed fully.A joint test was conducted between the valve with an overshoot of 0 and the servo mechanism,and the vibration value was gradually increased,but the servo mechanism still did not resonate.The verification measures are effective.By applying the same experience to other models and units,the similar quality problems are solved and equipment quality is greatly improved.

关 键 词：液压伺服机构 FTA 电液伺服阀 振荡故障 

分 类 号：TH137[机械工程—机械制造及自动化]