Analysis Of Flight Driving Task Flow And Layout Optimization Based On Petri Net

A good human-computer interaction system is the basis for ensuring safe flight driving,The optimization of the cockpit layout can improve the reliability of the human-computer interaction system.Therefore,a reasonable aircraft cockpit layout is of great importance for the operation efficiency of the crew,the completion of the mission and the driving Security.The study found that the human-computer interaction process in the cockpit is mainly based on the execution of the maneuvering task.The pilot obtains the information needed to complete the task through the cockpit man-machine interface,performs related operations,and completes the flight task.Therefore,the driving process is based on the analysis of the task flow.The cabin man-machine interface layout is optimized.In this paper,Airbus A320 is the object of research.Firstly,based on the time series logic concept of Petri net,it analyzes the flight process of different flight phases,and decomposes the flight driving manipulation process into a series of operation steps to study the relationship between pilot and cockpit interface.The human-computer interaction behavior has a detailed analysis of the task flow of 14 different flight phases.Secondly,using the task-oriented thinking to construct the behavior model,the Petri net modeling method is proposed to refine the flight driving task flow,establish the mapping of the task flow to the Petri net model,and refine the association between the task and the panel information element into different tasks.Type,which combines four basic task model structures to create a complex mission process model.After constructing the model,the Petri net model performance is analyzed by using the correlation matrix and S-invariant methods to test the activity,reachability,boundedness of the model,and whether there is conflict or deadlock.Then,in the case that there is no conflict and deadlock in the model,the task manipulation route and task on the cockpit interface are obtained based on the task flow Petri net model—the panel information element abstract hierarchical association diagram,so as to obtain the frequency and importance of each panel.,the strength of the abutment between the panels,etc.,to provide design data for the cockpit layout.Finally,the cockpit layout optimization mathematical model is constructed according to principles of cockpit layout,and the design variables,constraints and objective functions in the model are determined.Genetic algorithm,particle swarm optimization algorithm and genetic particle swarm optimization algorithm are selected as the optimization algorithm.The results are compared to obtain the optimal algorithm for cockpit layout optimization problem,and then the cockpit layout scheme is obtained.According to the order of use principle,functional principle,etc.,the final adjustment of the cockpit layout is achieved to achieve the best man-machine matching,so that the cockpit layout is more in line with the ergonomics,reducing the psychological load,task operation time and the variety of decision-making and manipulation errors caused by human factors and improve aviation safety.