直接力与推力矢量复合伺服控制技术研究

Researsh on the compound of direct force control and thrust vector control

关键词:  直接力控制  推力矢量控制  复合控制分配策略

Key words:  direct force control  thrust vector control  allocation strategy

摘要:

随着飞行器控制技术的发展,直接力、推力矢量等控制执行技术在飞行器控制领域得到广泛应用。直接力与推力矢量都具有对飞行器姿态控制效率高,精度好等优良特点。直接力在调姿过程中,系统动态过程平稳,但对于大姿态偏差情况下,直接控制的系统调整时间较长；推力矢量控制在面对大姿态偏差情况下,系统调整时间较短,但系统动态过程平稳性较差。本文结合直接力与推力矢量控制特点,设计了直接力与推力矢量复合控制策略。以某飞行器为研究对象,建立了飞行器的动力学与运动学模型以及直接力与推力矢量模型,提出了直接力/矢量推力复合控制技术的分配策略。经仿真验证表明,复合控制方法及控制分配策略使控制系统具有较快的响应速度和控制精度。

Abstract:

With the development of vehicle control technology,non-traditional control technology, lateral-force and thrust vector, is widely used in the field of the aircraft control. Lateral-force control and thrust vector control have good effect on efficiency of control and precision. But the response speed controlled by thrust vector is slow to the lateral-force, lateral-force need to consume much fuel for the use of a long time. According to the characteristic of lateral-force control and thrust vector control, the paper design the compound control of it. Basing high speed vehicle and ignoring the influence of the air to the aircraft, it has built the dynamics and kinematics model of the aircraft, and the lateral force and thrust vector model is built and it designed the compound control allocation strategy. According to the simulation, the strategies have good effects on flight control.