传感技术学报2024，Vol.37Issue(6)：1005-1013,9.DOI:10.3969/j.issn.1004-1699.2024.06.010
无转速同步下叶片同步振动参数辨识误差修正
Error Revising of Blade Synchronous Vibration Parameters Identification Based on Blade Tip Timing without Once-Per Revolution Sensor
摘要
Abstract
The non-contact online measurement of blade vibration is an important link to ensure the healthy and efficient operation of large rotating machinery,and the accurate identification of vibration parameters is the key to the high precision measurement of blade vi-bration.The traditional method of blade synchronous vibration parameter identification based on blade tip timing without once-per revo-lution sensor ignores the time error caused by blade vibration,which direct affects the accuracy of parameter identification.In order to revise the circumferential Fourier fitting error of blade synchronous vibration without once-per revolution sensor,an improved high-preci-sion identification method of blade synchronous vibration parameters is proposed.By using the blade vibration term,the arrival time of the blade is modified,and the measurement model of vibration displacement difference between sensors is optimized,which improves the identification accuracy of blade vibration amplitude and engine order.Numerical simulation and experimental research are carried out and show good consistency.When engine order is 10,6 and 5 respectively,the signal recovery accuracy of the improved method is 11.792 μm,5.214 μm and 3.264 μm higher than those of traditional method and the proposed method has a good error revise effect.关键词
叶尖定时/叶片振动/转速同步/误差修正/参数辨识Key words
blade tip timing/blade vibration/once-per revolution/error revising/parameters identification分类
航空航天引用本文复制引用
郭沛铉,牛广越,傅骁,段发阶,支烽耀,吴靓昕,蒋佳佳..无转速同步下叶片同步振动参数辨识误差修正[J].传感技术学报,2024,37(6):1005-1013,9.基金项目
国家自然科学基金项目(52205573,U2241265,92360306,62231011) （52205573,U2241265,92360306,62231011）
中国博士后科学基金项目(2022M720106) （2022M720106）
天津大学科技创新领军人才培育"启明计划"项目(2024XQM-0012) （2024XQM-0012）
精密测试技术及仪器全国重点实验室(天津大学)青年教师科研启动项目(Pilq2304) （天津大学）
国家科技重大专项(J2022-V-0005-0031) （J2022-V-0005-0031）
航空科学基金项目(2022Z060048001) （2022Z060048001）
青年人才托举工程项目(2021QNRC001) （2021QNRC001）
装备预研教育部联合基金项目(8091B022144) （8091B022144）
