Research On Key Technologies Of Ergonomics Design For Civil Aircraft Cockpit

Ergonomic design of civil aircraft cockpit is one of the important parts in the development process, which not only affects the physical and mental activities of pilots, but also the performance and safety. Good ergonomic design is an important guarantee for pilots completing the mission and helps pilots show out their skills. In this thesis, key technologies of ergonomic design for civil aircraft are deeply studied, and corresponding models and theories are established to support civil cockpit design.The ergonomic design framework is studied. Guided by human-centered design philosophy, the ergonomic design factors are determined based on function analytic hierarchy process. Combining with the general development process of civil aircraft, the design procedure of cockpit is investigated, the design considerations and tasks in each stage are presented, design input and output are described, the cooperative work mode of ergonomic design team is presentedthe ergonomic design framework of civil aircraft cockpit is established, and the ergonomic design framework of civil aircraft cockpit is established.the cooperative work mode of ergonomic design team is presented.Layout design and optimization method is studied roundly. Anthropometry data of pilots are analyzed, the layout design parameters are determined and the evaluation methods of reachability, visibility and comfort are presented. Combining with static and dynamic movement characteristic, typical missions are decomposed and pilots’ movements are captured. Using virtual pilot model and movement data, pilots’ motions are expressed. A motion case base is established and the method of reusing pilot motions for layout design of cockpit is provided based on case based reasoning. An application instance is used to illustrate the effectiveness of the methods.Integrated modeling method of human machine system of cockpit is thoroughly studied and the dynamic behivors of the system are analyzed. Information processing mechanism of pilot is investigated, the cognition process of pilots is provided. Based on object oriented Petri net, the integrated model of human machine system of cockpit is developed. The dynamic behaviors are analyzed and accessibility analysis method of the task of pilot is provided, conflicts in the model are identified and the complexity of operation procedure of pilot is evaluated based on entropy theory. An instance for human machine system of cockpit is used to illustrate the effectiveness of the methods.Evaluation method of workload of pilot is investigated thoroughly. Situational awareness and its influence factors is are analyzed, and the forming mechanism of workload is determined. The experiment scheme and platform is established for testing physical evaluation index of workload, electroencephalograph(EEG), electrocardiogram(ECG) and eye blink data are collected and analyzed, and the mechanism of the influence of the flight phrase and state on pilot physical parameters is disclosed. Using the experimental data, the model of pilot workload evaluation is developed based on support vector machines(SVM). By comparing the application instances, the effectiveness and advancement of the model is verified.Safety risk assessment method of human machine interaction behaviors is deeply studied. The influence factors of human machine interaction behaviors are analyzed, and the risks are identified using event tree considering the severity of the unsafe behaviors. Using the output of event tree, two kinds of risk assessment models are developed based on human-in-the-loop fault tree and Bayesian network respectively. The advantage and disadvantage of the two models are compared by an application instance.