In this paper, a UAV path planning algorithm based on improved rapidly-exploring random tree(RRT) is proposed to solve the problem of high randomness of sampling points and poor smoothness of planned path in the RRT path planning algorithm. In the process of tree expansion,the detection field is developed to limit the generation range of sampling points, and the generation strategy of sampling points is changed, so that the algorithm has the ability to achieve faster convergence to target and round obstacles. In addition, the improved algorithm also cuts the redundant points of the initial track, and uses the B-spline curve method to improve the smoothness of the track. The simulation results show that the UAV path planning algorithm based on the improved RRT reduces the average path length by 21.75%, the average number of tree nodes by 75.78%, and the average calculation time by 48.04% compared with the traditional RRT UAV path planning algorithm.
In order to achieve high safety and reliability in the initiation of squibs, this paper designs a high safety aviation squib drive and control system, which mainly includes sensor interfaces, hardware interfaces, software interfaces, and data interfaces. The hardware interface adopts a power output drive method based on inverse time protection to achieve self-recovery and high safety protection of the power drive circuit. The software interface adopts a hierarchical interface fault detection method to identify faults such as squib breakage, terminal output abnormality, achieving accurate isolation and rapid positioning of faults. The data interface uses instruction validity validation to achieve comprehensive processing of instruction data, status data, and BIT data. The experimental results show that the drive and control system has high safety and reliability, which has important practical significance for improving the safety of aircraft systems.
对于卫星厅式航站楼而言,安检位置的分布区域不同会对旅客整体通行效率造成影响.为了探究安检布局位置不同所带来的影响,以卫星厅式航站楼为基础,构建基于Anylogic的不同安检布局位置模型.对构建完成的模型进行仿真,并利用排队人数、通过时间等数据来判断安检位置布置的影响.仿真实验的结果显示,卫星厅内安检可以从整体上减少旅客整个离港流程中的通行时间,但由于APM的集中到达性卫星厅内安检区域的排队人数也会随之增加.
针对联合式航电系统原理仿真及教学需求,设计并实现了基于实体座舱并嵌入DCS数字战斗模拟软件的全数字仿真系统.系统可模拟航电系统地面准备、导航、空空、空地模式下的操作控制逻辑和显示画面;实体座舱和数字战斗模拟软件通过多路RS422 总线和HDMI接口实现信息交互;采用共享内存机制获取飞行状态及航电终端仿真数据作为激励源,模拟航电系统运行过程中各个子系统之间GJB 289A总线的信息流,展示GJB 289A总线通信原理及调度机制.实践证明,系统能有效支撑航空电子综合技术与原理的教学.
随着武器装备信息化技术的发展,作战场景发生了重大变化,多兵种、跨领域的需求愈加凸显,更加注重资源利用率、信息共享程度、分布式协同能力,而目前装备嵌入式计算机呈现出"烟囱式"的发展现状,资源利用率不高、信息共享受限、跨平台之间协同不足,严重影响装备系统的能力.针对这些问题重点研究基于虚拟化技术的资源管理调度、任务自适应的协同计算等技术,为跨平台作战应用统一分配系统资源、提高系统资源的按需分配和自适应调度提供了支持.
