基于标准系数法的高度稳定系统信号重构研究

Signal Reconfiguration for Altitude Hold and Control System Based on Standard Coefficient Method

研究了俯仰角和俯仰角速率信号丢失时采用信号重构方法设计飞机高度保持和控制系统;针对线性小扰动飞机模型,设计降维状态观测器实现信号重构,再采用标准系数法设计高度保持和控制回路;通过一个输入信号升降舵偏角和两个输出信号迎角与速度对俯仰角和俯仰角速率进行重构,用标准系数法确定模型中的参数;仿真结果表明对于线性飞机模型用降维状态观测器能够很好地重构俯仰角和俯仰角速率信号,同时标准系数法可使系统达到满意的性能指标。

Abstract： This paper presents a new method for aititude hold and control system of aircraft. Signal reconstruction can provide the desired signal pitch angle and pitch angle rate when they lost. A reduced--order state observer has been designed to reconstruct the required signal, ~tandard coefficient method is applied to design altitude hold and control system with small perturbation aircraft model. Reconstruct the signal pitch angle and pitch angle rate with one input angle of elevator deflection and two output attack angle and velocity. The parameters are de- termined by standard coefficient method, Simulation results show that the designed reduced--order state observer can reconstruct signal pitch angle and pitch angle rate effectively. The control scheme utilizes standard coefficient method to design altitude hold and control system can achieve satisfied performance.