摘要
飞控系统故障诊断研究是一项重要的工作。对直升机飞控系统中可能出现的故障进行了分析,提出了诊断措施。基于直升机模型的故障诊断技术,在直升机悬停状态下,建立了线性化运动方程,并建立了一个具有鲁棒性的直升机控制系统。分别在无故障和执行器发生故障这两种状态下,仿真分析了直升机的三轴姿态保持运动。最后在该模型的基础上设计了故障检测观测器,仿真结果表明了该方法的有效性。
Research on fault diagnosis for the flight control system is an important task. In this paper,the faults which may occur in the helicopter flight control system are analyzed; then the diagnostic measures are proposed. Based on the fault diagnosis technology of helicopter model,a linearized equation of motion is established,and a robust helicopter control system is set up in the helicopter hovering state. Simulation and analysis on three-axis attitude keeping movement of the helicopter is respectively conducted under the fault-free conditions and failure state of the actuator. Finally,a fault detection observer is designed based on the model,and the simulation results prove the effectiveness of this method.
作者
罗慕成
李波
林雨生
LUO Mu-cheng;LI Bo;LIN Yu-sheng(China Helicopter Research and Development Institute, Jindezhen Jiangxi 333000, Chin)
出处
《机械研究与应用》
2018年第2期130-133,137,共5页
Mechanical Research & Application
关键词
故障诊断
飞控系统
直升机
残差
fault diagnosis
flight control system
helicopter
residual
