论文部分内容阅读
本文为飞行试验数据分析与现代导航/控制系统提供一组估计飞机侧滑角的非线性的侧向观测器。文中给出了三种结构形式的非线性观测器的数字仿真、离线及在线飞行试验的研究结果。其中具有横向加速度反馈的非线性观测器不仅具有很好的估计特性,其估计精度已达到了飞行试验数据分析及实际飞行导航/控制系统所要求的0.2°范围,而且具有很好的抗飞行状态变化及抗大气紊流干扰的稳健性。而简化的一阶非线性观测器可在线应用于飞行导航/控制系统。
This paper provides a set of non-linear lateral observers for estimating airplane side slip angles for flight test data analysis and modern navigation / control systems. In this paper, the numerical simulation of three kinds of nonlinear observers and the results of offline and on-line flight tests are given. Among them, the nonlinear observer with lateral acceleration feedback has not only good estimation characteristics, but also its estimation accuracy has reached the range of 0.2 ° required by the flight test data analysis and actual flight navigation / control system and has good anti-flight status Variability and robustness to interference with atmospheric turbulence. The simplified first-order nonlinear observer can be used online in flight navigation / control systems.