基于真实数据反演的风扇转子本机平衡方法  

Fan rotor local balancing method based on real data inversion

作　　者：陈立芳[1,2] 孙亚冰 周书华 高强 乔保栋 李栋[1,2] CHEN Lifang;SUN Yabing;ZHOU Shuhua;GAO Qiang;QIAO Baodong;LI Dong(Ministry of Education Key Laboratory of Engine Health Monitoring-Control and Networking,Beijing University of Chemical Technology,Beijing 100029,China;State Key Laboratory of High-End Compressor and System Technology,Beijing University of Chemical Technology,Beijing 100029,China;AECC Shenyang Engine Research Institute,Shenyang 110015,China)

机构地区：[1]北京化工大学发动机健康监控及网络化教育部重点实验室,北京100029 [2]北京化工大学高端压缩机及系统技术全国重点实验室,北京100029 [3]中国航发沈阳发动机研究所,沈阳110015

出　　处：《航空学报》2024年第4期67-77,共11页Acta Aeronautica et Astronautica Sinica

基　　金：国家自然科学基金(51775030)。

摘　　要：针对风扇转子相位监测困难、振动传递路径复杂、不同机台动力学特性差异性大、动平衡效率低等现象,提出一种基于模型和真实动平衡数据反演的风扇转子本机平衡方法。首先,通过分解风扇转子振动传递路径,构建数据反演模型和确定反演特征参数;其次,利用真实动平衡数据反演出匹配各机台的关键特征参数Kcs(机匣到支点1动刚度);最后,基于反演理论建立多转速下机匣振动响应、特征参数Kcs和转子不平衡量的线性矩阵方程,实现转子不平衡量逆运算。本方法经风扇转子现场动平衡验证,可在给定的转速范围内实现100%振动抑制,抑振比达43%~68%,动平衡效率大大提高。A fan rotor local balancing method based on the model and real dynamic balancing data inversion is pro⁃posed to address the phenomena of difficult fan rotor phase monitoring,complex vibration transmission paths,large variability of dynamic characteristics of different machines,and low dynamic balancing efficiency.The data inversion model is first constructed and the inversion characteristic parameters determined by decomposing the fan rotor vibra⁃tion transmission path.The real dynamic balance data is then used to invert the performance to match the key charac⁃teristic parameter Kcs(casing to pivot point 1 dynamic stiffness)of each machine.Finally,the linear matrix equation of casing vibration response,characteristic parameter Kcs and rotor unbalance is established based on the inversion theory to realize the inverse operation of rotor unbalance.This method is verified by the field dynamic balancing of fan rotors,which can achieve 100%vibration suppression in the given speed range,and the vibration suppression ratio reaches 43%—68%,significantly improving the dynamic balancing efficiency.

关 键 词：航空发动机 风扇转子 本机平衡 数据反演 无键相 

分 类 号：V231.92[航空宇航科学与技术—航空宇航推进理论与工程]