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针对先进机场场面引导与控制系统(Advanced surface movement guidance and control system,A-SMGCS)滑行道冲突预测与避免控制,提出基于事件反馈的闭环控制框架,并重点解决对头冲突预测与避免控制问题。建立滑行道受控着色Petri网模型。提出航空器可控滑行路段概念,并给出其对应子模型的生成规则。利用子模型中环路和环路链,给出无对头冲突的充分必要条件。提出对头冲突避免控制策略,以及适合实时控制的对头冲突预测与避免控制算法。算例表明本文能根据场面状态及时识别对头冲突并实现冲突避免。
Aiming at the collision prediction and avoidance control of advanced airport movement guidance and control system (A-SMGCS), a closed-loop control framework based on event feedback is proposed and the problem of head conflict prediction and avoidance control is focused on. To establish taxiway controlled colored Petri nets model. The concept of controllable taxiing section of aircraft is proposed and the rules of generating corresponding sub-models are given. By using the loop and the loop chain in the submodel, the sufficient and necessary conditions of the non-head-to-head collision are given. The control strategy of avoiding collisions is put forward, and the algorithms of collision prediction and avoidance control suitable for real-time control are proposed. The example shows that this paper can identify the collision of the head and avoid the conflict timely according to the scene state.