基于自抗扰与模糊逻辑的大攻角控制系统设计

High angle of attack control system design based on ADRC and fuzzy logic

针对直接力/气动力复合控制空空导弹的敏捷转弯问题,提出了一种基于自抗扰控制技术与模糊逻辑的自动驾驶仪设计方法。将导弹俯仰通道分解为攻角控制回路与俯仰角速度控制回路,使用自抗扰控制方法分别设计控制器,并将其串联组成完整控制回路。由攻角指令得到虚拟控制量,然后通过模糊逻辑将虚拟控制量分配给气动舵与直接力喷流装置。最后使用模糊控制方法对自抗扰控制器的反馈增益进行在线调整。仿真结果表明,所提出的控制方案对大攻角指令有良好的跟踪效果,适用于空空导弹的大攻角敏捷转弯控制。

A missile autopilot design method based on active disturbance rejection control （ADRC） and fuzzy logic is proposed for agile turn of air-to-air missile with reactionjet/aerodynamic blended control system. The scheme separates the missile pitching channel into angle of attack loop and pitching angular velocity loop. Controllers are designed by the ADRC respectively and combined to the whole control loop in tandem. Then a virtual control value is decided by the angle of attack command and allocated to aerodynamic deflectors and reaction jet control system. Finally, the feedback gains of the ADRC controller are adjusted in real time by fuzzy control. Simulation results indicate that the proposed strategy can track the high angle of attack command accurately, and it is applicable to finish agile turn at high angle of attack.