A-SMGCS滑行道交叉口引导灯控制指令决策方法

Control Command Decision-making Method for Taxiway Intersection Guidance Lights in Advanced Surface Movement Guidance and Control System

为实现A-SMGCS(先进机场场面引导与控制系统)中滑行道交叉口引导灯控制指令的自动决策,提出了一种基于Petri网的控制决策方法.首先应用Petri网构建交叉口运行动态模型,并建立相应的标识控制规范.然后,针对航空器在交叉口资源占用冲突,利用动态模型的优先控制使能变迁来决策引导灯指令,以控制航空器在交叉口的运行顺序,并给出对变迁进行优先控制使能选择的充要条件和遴选算法;构造有色监视器对模型的标识控制规范遵循情况进行监视,并结合优先控制使能变迁遴选算法提出引导灯控制指令决策算法.最后,通过算例说明了交叉口引导灯控制决策方法的有效性.

In order to achieve automatic control command decision-making for taxiway intersection guidance lights in ASMGCS （advanced surface movement guidance and control system）,a Petri-net-based（PN-based） method is proposed.The dynamic operation model for taxiway intersection is constructed using Petri net and the marking control regulation is defined. The intersection resource occupancy confliction is analyzed and resolved through the preferred controlled enable transition in operation model.Moreover,the necessary and sufficient condition for the selection of preferred controlled enable transition is proposed and also the selection algorithm is presented.To monitor the PN-based intersection operation model,the colored monitor is used to trace the conformance of operation model to the marking control regulation,and the decision-making algorithm for the guidance lights control command is proposed.Finally,a case study is given to validate the effectiveness of the control command decision-making method for the intersection guidance lights.