主机对中姿态参数的近似算法

利用3个非共线设置的特征光标和单个CCD相机来获取空间物体的三维信息,采用广义欧拉角（布利恩角）来描述主机的对中姿态。基于小孔成像,建立主机与轴系之间的简化数学模型,推导了对中姿态参数的一种新的近似解析算法,建立了主机对中姿态方程,并叙述了姿态方程在主机对中姿态控制中的作用。最后,对该近似算法的误差进行仿真研究。

Approximate Algorithm for Alignment Attitude Parameters of A Main Propulsion Engine

Using three non-collinear reference points and a charge coupled device(CCD)camera to get the 3D information of a body,the alignment attitude of a main propulsion engine is described with Euler angles.Based on the principle of pinhole imaging projection,a simplified mathematical model of the relation between the main propulsion engine and the propeller shaft is developed and a new approximate analytical algorithm of the alignment attitude parameters is also derived.Then,the alignment attitude equation of the main propulsion enqine is established and it is applied to the alignment attitude control of the main propulsion engine.Finally,a simulation is conducted to analyze the error of the presented algorithm.