基于时空融合LSTM网络的驾驶视角轨迹预测

自动驾驶环境感知系统的重要任务之一是对周围交通目标进行轨迹预测,其输出轨迹可为决策控制和路径规划提供所需目标信息.考虑传统轨迹预测方法一般基于俯视视角而难以满足自动驾驶车载感知的实际需求,提出一种基于长短时记忆(LSTM)网络模块、空间交互模块和时间行为注意力模块相融合的驾驶视角轨迹预测算法.为更好体现交通目标与周围环...     

三维建模及动画在拱桥中的应用

在使用CAD完成整个桥梁的设计后 ,根据CAD的主要设计数据使用 3DSMAX这一软件 ,通过建模、赋材质、动画等综合技术 ,赋予桥较为真实的面貌 ,使桥真实、直观、形象地展示在人们面前 .通过三维建模和动画丰富了桥的再设计 ,笔者在运用 3DS、MAX、开辟多维设计定向 ,进行桥梁再设计方面作了有益的尝试     

个性化教学设计可视化建模的研究与实现

对网络环境下基于建构主义个性化教学设计进行了分析,利用教学元素以可视化建模方式实现个性化教学设计。     

供应商管理库存系统中库存和运输计划整合

针对客户需求小批量、多批次配送的特点,建立了供应商管理库存(VMI)模式下供应商库存补充和配送整合策略优化模型,以计算整合策略中最高库存量Q和配送整合周期T,达到最小化长期平均期望总成本的目的,并探讨了其计算方法.算例表明,当参数 和AD较大时,适合采用配送整合策略,反之,适合用直接递送策略.     

基于Agent模式的空车调整决策系统的研究

详细介绍了Agent模式新技术,并结合铁路空车调整计划问题,对空车调整智能优化决策系统开发的总体构想进行了探讨.     

基于Web的继电保护管理信息系统的UML设计

针对基于Web的继电保护管理信息系统的功能特点和开发难点,用UML实现了Web的继电保护管理信息系统的建模,为系统软件的开发奠定了基础.     

桥梁虚拟现实系统的设计

虚拟现实技术因其优点而广泛应用于众多领域,对于桥梁领域同样具有重要的使用价值。因此,在提出自主开发专业性桥梁虚拟现实系统理念的基础上,介绍自编桥梁参数化建模软件及OpenGL视景仿真软件,对同行有一定的参考价值。     

Modeling and software implementation of flight system for simulator of a new fighter

Real-time modeling and simulation of flight system are the key parts of simulator. After describing the architecture of simulator for a newer fighter, author presents the composition of flight system and its mathematic models. In this paper, aircraft is regarded as an elastic flight body. And a new integrated algorithm which can remedy the shortcoming of Euler method and four-element method is used to calculate the Eulerian angles of aircraft. Finally, the software implementation of the flight system is given in the paper.     

Study of hierarchical federation architecture using multi-resolution modeling

This paper aims at finding a solution to the problem aroused in complex system simulation, where a specific functional federation is coupled with other simulation systems. In other words, the communication information within the system may be received by other federates that participated in this united simulation. For the purpose of ensuring simulation system unitary character, a hierarchical federation architecture (HFA) is taken. Also considering the real situation, where federates in a complicated simulation system can be made simpler to an extent, a multi-resolution modeling (MRM) method is imported to implement the design of hierarchical federation. By utilizing the multiple resolution entity ( MRE ) modeling approach, MRE for federates are designed out. When different level training simulation is required, the appropriate MRE at corresponding layers can be called. The design method realizes the reuse feature of the simulation system and reduces simulation complexity and improves the validity of system Simulation Cost (SC). Taking submarine voyage training simulator (SVTS) for instance, a HFA for submarine is constructed in‘this paper, which approves the feasibility of studied approach.     

面向自动驾驶的仿真场景自动生成方法综述

随着自动驾驶测试验证对虚拟仿真场景依赖程度的增加,传统基于专家经验的场景枚举生成方法已无法满足测试需求.数字虚拟仿真场景自动生成方法在场景多样性、危险性、可解释性、生成效率等方面存在巨大技术优势,是提高汽车自动驾驶技术测试验证安全性和可靠性的关键,已成为当前汽车智能化领域的研究热点.在广泛调研场景自动生成方法领域研究成...