直升机交互式虚拟维修方法研究

发布时间：2018-04-08 21:51

  本文选题：直升机　切入点：虚拟维修　出处：《中国民航大学》2016年硕士论文

【摘要】：虚拟维修是一种新兴的维修方式,这种维修方式其是随计算机学科,图形处理学学科的发展而兴起的,并伴随着虚拟现实技术的进步而成熟的,是未来装备维修的发展趋势。由于我国通用航空产业发展迅速,直升机需求量大,目前在机务人员培训中实物样机与培训方法难以满足大量的训练需求,为了解决传统机务维修培训中成本高效率低的问题,本文提出以直升机交互式虚拟维修的方法使受训人员接受训练,以实际维修工作的要求和流程为基础,用户在虚拟环境中对虚拟样机进行交互式操作,从而达到训练认知的目的。本文提出直升机交互式虚拟维修的实现方法。在虚拟样机模型创建方面,通过将CAD系统建立的模型转换格式并优化的方法导入到VR引擎系统中。针对三维样机模型零部件之间的碰撞问题,提出了将Vega Prime本身碰撞检测与包围盒算法碰撞检测相结合的两次碰撞检测的方法,同时根据直升机虚拟样机模型零部件之间的关系设计以层次关系模型和关联关系模型相结合的拆装序列,此外对直升机虚拟样机的故障表示方法做了深入探讨。对直升机日常维护中的一项重要工作旋翼桨叶振动调整进行深入研究,设计其在虚拟维修中的实现方法和交互方式,并以实例进行验证;设计了直升机交互式故障诊断与维修过程仿真流程与实现方法,确定了故障设定的方法,对主要流程交互界面进行了详细设计,通过AS350直升机典型故障的诊断与维修验证了交互维修仿真的实用性。根据直升机维护工作特点,从航线维护与定检维护两个方面设计了直升机维护工作虚拟仿真流程和数据库,并对维护工作仿真评价方法进行了研究。通过本文的研究,确定了将直升机故障诊断与维修工作以虚拟维修的方式表现的方法,为以人员培训为目的的交互式虚拟维修系统的开发奠定了基础,同时也为其他领域内虚拟维修的研究提供了参考。
[Abstract]:Virtual maintenance is a new kind of maintenance method, which rises with the development of computer science and graphics processing science, and is mature with the development of virtual reality technology. It is the development trend of equipment maintenance in the future.Because of the rapid development of China's general aviation industry and the large demand for helicopters, it is difficult to meet a large number of training needs in the training of aircraft crew by using physical prototyping and training methods at present. In order to solve the problem of high efficiency and low efficiency in the traditional aircraft maintenance training,In this paper, the method of helicopter interactive virtual maintenance is proposed to train the trainees. Based on the requirements and flow of actual maintenance work, the user interactively operates the virtual prototype in the virtual environment.In order to achieve the purpose of training cognition.In this paper, the realization method of helicopter interactive virtual maintenance is presented.In the aspect of creating virtual prototyping model, the model established by CAD system is imported into VR engine system by the method of transforming the format and optimizing it.Aiming at the collision problem between parts of 3D prototype model, a method of twice collision detection, which combines Vega Prime itself collision detection with bounding box algorithm, is proposed.At the same time, according to the relationship between the parts of the helicopter virtual prototyping model, the disassembly sequence is combined with the hierarchical relationship model and the correlation relationship model. In addition, the fault representation method of the helicopter virtual prototype is discussed in depth.The vibration adjustment of rotor blade in daily maintenance of helicopter is studied deeply, and the method and interactive mode of its realization in virtual maintenance are designed and verified by an example.The simulation flow and realization method of helicopter interactive fault diagnosis and maintenance process are designed, the method of fault setting is determined, and the main process interaction interface is designed in detail.The practicability of interactive maintenance simulation is verified by the diagnosis and maintenance of typical faults of AS350 helicopter.According to the characteristics of helicopter maintenance, the virtual simulation flow and database of helicopter maintenance are designed from two aspects: route maintenance and fixed inspection maintenance, and the simulation evaluation method of maintenance work is studied.Through the research of this paper, the method of displaying helicopter fault diagnosis and maintenance work in virtual maintenance mode is determined, which lays a foundation for the development of interactive virtual maintenance system for the purpose of personnel training.At the same time, it also provides reference for the research of virtual maintenance in other fields.
【学位授予单位】：中国民航大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：V267
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本文编号：1723467