中性稳定技术在综合火力/飞行控制系统中的应用

火力／飞行综合控制(Integrated fire／flight control，IFFC)系统要求对飞机飞行姿态的控制应具有精确性和快速性，但提高姿态跟踪精度受到自然飞机惯性动力学的限制。本文提出飞机中性稳定技术应用于综合火力／飞行控制系统，给出了中性稳定飞机结构图和动力学模型。利用后缘襟副翼偏转所产生的直接力效果，在一定的控制律制约下，去抵消迎角扰动所产生的气动效果，使飞机不再出现静稳定力矩，达到中性稳定。采用中性稳定技术的综合火力／飞行控制系统有效地加速了飞机在攻击区的姿态跟踪过程，并实现了姿态控制过程中航迹基本不变的机身瞄准模态控制要求，提高了火控精度和命中概率。仿真结果表明，中性稳定综合火力／飞行控制系统具有良好的控制效果和应用前景。

Application of Neutral Stability Techniques in Integrated Fire/Flight Control System

Attitude responses of integrated fire/flight control (IFFC) systems must be accurate and quick. However, tracking precisions are limited by inertia dynamics. This paper applies the neutral stability techniques in integrated fire/flight control system and presents the structure and dynamic model of the neutral stability plane. Neutral stability techniques use direct force produced by back flap to counteract dynamic effects of attack angle disturbances under the control law which leads neutral stability without static steady moment. The IFFC system based on neutral stability accelerates the processing of attitude tracking effectively in attacking area and improves the performance of attitude tracking. It also keeps the tracking to meet control requests of aiming model. Simulational results show that the IFFC system based on neutral stability has good performance and potential application ability.