基于逆动力学和重心估计的飞行控制系统设计

飞机飞行中重心的变化直接影响飞机本身的控制特性,使得控制系统设计更为复杂.提出了一种基于逆动力学和重心估计的飞行控制方法,首先建立了考虑重心偏移的飞机六自由度动力学模型,由此模型推导得到了其逆特性的解析形式,并采用基于重量分布的重心估计系统在线提供重心信息.仿真结果表明,该方法有效地利用了重心在线估计信息,能适应飞机在不同重心时运动特性的变化,具有良好的控制效果,且设计过程简洁,易于实现.

Design of flight control system based on inverse dynamics and center of gravity estimation

Due to the center of gravity varying over a specified range,the aircraft may deviate from its known dynamics,thus bringing special problems to the attitude control system.A synthesis approach based on in-flight estimation of center of gravity position and the inverse dynamics was proposed.First of all,a six degree-of-freedom flight dynamics model of aircraft with center of gravity offset was built.Based on the above model,the inverse dynamics in analytical form was obtained by deducting the dynamic equation...