电传飞机典型异常振动的诊断与处置技术研究

目的 对电传飞机典型的异常振动问题进行研究，形成电传飞机异常振动的诊断和处置技术。方法 首先对气动伺服弹性问题的基本原理和气动伺服弹性失稳可能引发的危害进行简要的介绍。然后对某电传飞机试飞过程中出现的异常振动现象进行详细描述，通过不同类型数据的对比分析，对该异常振动问题进行准确定位和诊断，进而给出相应的应对措施。最后通过正式的飞行试验对处置措施的准确性进行验证。结果 经过对异常振动问题的处理与分析，明确了该异常振动发生的根本原因，通过处置措施的有效落实，已顺利完成该型机的颤振/ASE飞行试验工作。结论 通过本文的异常振动处置方法的研究，为以后类似问题的准确诊断和处置提供了有益的参考和借鉴。

Diagnosis and Treatment Technology of Typical Abnormal Vibration of Fly-by-Wire Aircraft

The typical abnormal vibration of Fly-By-Wire aircraft is studied for the diagnosis and treatment technology. Firstly, the basic principle of aeroservoelasticity and the possible harm caused by aeroservoelasticity instability are introduced briefly. Then, the abnormal vibration phenomenon in the flight test of a Fly-By-Wire aircraft is described in detail. Through the comparative analysis on different types of data, the abnormal vibration is accurately located and diagnosed, and then the corresponding countermeasures are given. Finally, the accuracy of disposal measures is verified by the formal flight test. Through the treatment and analysis of the abnormal vibration in this paper, the root cause of the abnormal vibration is clarified. According to the effective implementation of the treatment measures proposed in this paper, the flutter/ASE flight test of this aircraft has been successfully completed. The research on abnormal vibration disposal method in this paper has produced useful reference for the accurate diagnosis and treatment of similar problems in the future.