限力控制在直升机桨毂中心动特性试验中的应用

摘要

The test of dynamic characteristics of the hub center is one of the analyzing test,for designing in the dynamic test and diagnosing malfunction.It offers the dynamic characteristic parameters of the hub head for analyzing ground resonance and the gist for the designing and ameliorating.In this paper,taking the helicopter to the researched object of the test,it discussed the influence of force control in test and the merits or the defects,contrasted against no control force swept test,to offer the technology for the coming study.%桨毂中心动特性试验是直升机在动力学试验中设计、故障诊断的分析试验之一,为"地面共振"分析提供桨毂中心的动力特性参数,为其设计改进提供依据.以某直升机桨毂中心为试验研究对象,针对试验中的限力控制对试验的影响及其优缺点进行了探讨,并与不限力扫频试验作对比分析,为以后的研究工作提供技术支撑.