一种基于Daisy-chain的推力矢量协调控制方法

A Coordinated Control Method of Thrust Vector Based on Daisy-chain Allocation and Dynamic Inverse Control Method.

推力矢量技术作为先进战斗机最重要的技术之一,可以大大提高飞机可控迎角的范围,增强战斗机的过失速机动能力。然而目前我国可借鉴国外重要机型推力矢量技术的实现是通过在驾驶舱中增加相应的矢量操纵机构实现的,在很大程度上增加了飞行员的驾驶负担。如何取消该操纵机构并将其对于推力矢量的控制综合协调进飞控系统中,以减轻操作负担,成为一个亟待解决的重要问题。现提出了一种基于Daisy-chain分配、动态逆控制的推力矢量协调控制方法。方法基于模块化的控制-分配设计思想,采用链式分配与非线性反馈线性化的方法,能够将推力矢量控制融合到阻尼增稳系统中去,并实现对矢量操纵面与气动操纵的协调控制,因而能取消推力矢量操纵机构,减轻了飞行员的工作负担。仿真结果表明,上述方法能有效地实现推力矢量的协调控制,并且基于Daisy-chain的设计方法还实现了最小推力矢量控制,因而有效降低飞机操控对于推力矢量机构的工作负担,减少发动机的维护成本。

Thrust vector technology can greatly enhance the range of controllable angles of attack and improve the post-stall maneuverability of fighters. However, at present, the implementation of thrust vector technology used in some aircraft is realized by adding the corresponding vector control mechanism in the cockpit, which greatly increases the pilot’s driving burden. Therefore, how to eliminate the control mechanism and integrate the control of the thrust vector into the flight control system to reduce the operation burden has become an important problem to be solved. In this paper, a design method based on daisy chain allocation and dynamic inverse control method was proposed. Based on the modular control distribution design idea, this method would integrate the thrust vector control into the damping augmentation system and realized the coordinated control of the vector and the control surfaces. So it would cancel the thrust vector control mechanism and reduce the burden of the pilot. In addition, the proposed method also realized the minimum thrust vector control, thus effectively reducing the workload of the thrust vectoring engine and the maintenance cost of the engine.