摘要
研究了六自由度非线性方程描述的飞机在俯仰速率传感器故障情况下的信号重构方法。给出了两种重构方法,一种是通过建立等效的线性模型,设计线性状态观测器重构状态信号,另一种是使用非线性跟踪微分器方法,通过跟踪俯仰角的微分信号来计算俯仰速率信号。仿真结果表明,两种方法都具有一定的可行性。
The signal reconfiguration of pitch angular rate in the 6 degrees of freedom aircraft model is introduced. Two methods are presented.In the first method, by building an equivalent linear model of the aircraft, the linear state observer could be designed to estimate the states. In the second method, the nonlinear tracking differentiator is applied to producing the differential signal of the pitch angle, which is used to calculate the pitch angular rate. Simulation results were presented to indicate the feasibility of two algorithms.
出处
《飞行力学》
CSCD
2004年第2期26-29,共4页
Flight Dynamics
基金
国家自然科学基金资助项目(90205011)
关键词
状态观测器
跟踪微分器
信号重构
state observer
tracking differentiator
signal reconfiguration
