基于健康行为模型的飞行器控制系统健康评估

通过分析与飞行器控制系统相关的健康模式与模型参数的映射关系,利用近似响应原理,阐述了建立健康模型、开展系统健康评估的方法;结合测点仿真数据和多维向量相似度的原理,提出了健康指标的计算、优化方法和系统健康评估总体方案。以某型舵机模型为研究对象,采用高斯白噪声作为激励源,应用BP神经网络构建舵机组件的健康行为模型。模型在某飞行器6 DOF仿真平台中进行仿真和验证,实现了基于健康行为模型的在线故障监测。通过研究健康行为建模方法在飞行控制系统健康评估中的应用,为飞行器的健康评估提供了一种可行方案。

Health Assessment of Flight Control System Based on Health Behavior Model

The approaches to establish of health models and develop the system-level health assessment are presented ,through analyzing the mapping relationship of health modes and model parameters which are related to flight control system , and applying the response approximation theory;The calculating and optimizing methods for health indexes and the scheme of system-level health assessment are put forward , with the application of test point data and the theories of multidimensional vector similarity .With the ap-plication of BP neural network ,the health behavior model of a certain rudder is built up under the func-tion of Gaussian White Noise .The behavior model is applied in a 6 DOF simulation model of vehicles to realize the on-line fault dectection .The research of the health behavior modelling methods′application in health assessment can provide a useful scheme .