武装直升机控制增稳系统的设计

用现代控制理论的方法，对武装直升机的控制增稳系统进行了设计。所给的状态方程为２９阶，其中包括了执行机构及旋翼动态、机体挠性动态的参数。采用内部平衡系统的性质来获得一个降阶模型，用特征结构配置的方法来设计一个控制器，从而提高现代攻击直升机的操纵品质。同时还比较了降阶前后系统的性能，用降阶的方法说明了旋翼动态、直升机挠性动态对系统的影响。设计结果证明，系统得到了良好的解耦效果及闭环特性。

Design on the Command and Stability Augmentation Systems of Arm Helicopter

This paper discusses the use of balanced coordinates for obtaining a reduced order model and eigenstructure assignment techniques for designing a controller of a modern attack helicopter.The reduced order model requires approximately one third of the number of states of the original model.Designing transient response characteristics are achieved through eigenvalue assignment and model decoupling through eigenvector shaping.Frequency and time responses are used to demonstrate the behavior of the feedback control system.Simulation shows good closed loop characteristics.It also discusses the affection of actuator dynamics and flexure dynamics by the way of model reduced.