小型无人直升机增稳系统设计  

Design of Stability Augmentation System for a Small-Size Unmanned Helicopter

作　　者：王小青[1] 黄一敏[1] 杨一栋[1] 

机构地区：[1]南京航空航天大学自动化学院,江苏南京210016

出　　处：《系统仿真学报》2008年第S1期526-528,533,共4页Journal of System Simulation

摘　　要：在分析小型直升机稳定性特点的基础上,综合直升机增稳系统的可实现性及控制性能,提出了一种小型无人直升机的增稳系统及计算方案:利用姿态及角速率反馈到相应的输入,实现直升机的姿态稳定。采用改进的现代控制理论LQR(线性二次型调节器)方法,根据直升机状态变量对系统性能的影响设计代价函数,由于LQ问题很难求解,所以利用遗传算法求解,得到性能较好的增稳系统。This paper analyses the realizability and performance of stability augmentation system(SAS) for helicopter,and presents a method of design and computation for a small-size unmanned helicopter based on analysis of a small-size helicopter:feedback pitch angle and pitch rate to longitudinal cyclic input;roll angle and roll rate to lateral cyclic input;yaw angle and yaw rate to tail-rotor collective input.This paper uses augmented modern control design methods:Linear Quadratic Regulator(LQR),and designs cost function based on the performance of states of helicopter.Because the problem of LQ is hardly to be worked out,so a genetic computation methods is presented in this paper.

关 键 词：小型无人直升机 增稳系统 LQR 遗传算法 

分 类 号：V249.1[航空宇航科学与技术—飞行器设计]