科技创新与应用2026，Vol.16Issue(11)：21-24,4.DOI:10.19981/j.CN23-1581/G3.2026.11.005
直升机涡轮后压力测量系统机电协同误差溯源与维修策略优化
伍坚庭 1刘泽宇1
作者信息
- 1. 昌河飞机工业(集团)有限责任公司,江西 景德镇 333002
- 折叠
摘要
Abstract
In this paper,a three-dimensional collaborative maintenance strategy is proposed to solve the matching error problem caused by the aging of electromechanical components of a certain helicopter turbine back pressure(PK)measurement system in long-term service.Based on the working principle of the P-117M/B measuring instrument,the failure mechanism of the compensation mechanism for environmental parameters(atmospheric pressure PH,temperature tH)and the dynamic imbalance of the bridge is revealed;by deconstructing the functional correlation of five components(status indicator,dual pressure sensor,height correction sensor,temperature sensor),core failure modes such as pressure sensor potentiometer contamination,membrane plastic deformation,and indicator copper compensation resistor aging are located.The innovative maintenance system includes:The pressure sensor uses potentiometer cleaning and membrane travel fine-tuning to restore electromechanical conversion accuracy;The indicator optimizes the bridge resistance(R1/R2)to calibrate the cursor benchmark,and detects the temperature characteristics of the copper resistance(R6/R7);The mirror polishing process of the height sensor transmission mechanism is repaired.The systematic error needs to be comprehensively managed through environmental compensation recalibration and electromechanical interface parameter reconstruction to ensure that the PK measurement consistency error is≤1.2%under all operating conditions.This strategy provides key technical support for improving the reliability of aero-engine condition monitoring.关键词
涡轮后压力/匹配性误差/电桥平衡/电位计失效/真空膜盒/协同维修Key words
turbine back pressure/matching error/bridge balance/potentiometer failure/vacuum bellow/collaborative maintenance分类
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伍坚庭,刘泽宇..直升机涡轮后压力测量系统机电协同误差溯源与维修策略优化[J].科技创新与应用,2026,16(11):21-24,4.
