噪声与振动控制2017，Vol.37Issue(5)：42-45,4.DOI:10.3969/j.issn.1006-1355.2017.05.009
载荷校准自动加载系统振动分析
Analysis of Vibration in Auto-loading Systems for Load Calibration
摘要
Abstract
Vibration and loud noise occur in aircraft load calibration tests when using automatic hydraulic loading system, which will directly affect security of aircraft and the testing workers. The load data of the system vibration during six-point symmetrical coordinated loading process of a high aspect ratio flexible wing is analyzed in both time domain and frequency domain. And the vibration characteristics of the test system are summarized. The key factors affecting the coordination of test system, such as the rigidity of the tested components, PID parameters of auto-loading system and the loading time, are studied in detail. The range of the PID parameters is provided based on the engineering experience. The results show that when structural stiffness of the load calibration test components is low, the coordination among the actuators becomes poor and the low frequency vibration of the auto-loading system may appear very easily. This low-frequency vibration can be prevented effectively by prolonging loading time and reducing the loading rate.关键词
振动与波/载荷校准/飞机/自动加载系统Key words
vibration and wave/load calibration/aircraft/auto-loading system分类
航空航天引用本文复制引用
贾天娇,高尚,张海涛..载荷校准自动加载系统振动分析[J].噪声与振动控制,2017,37(5):42-45,4.
