搜索结果: 1-9 共查到“交通运输工程 Active”相关记录9条 . 查询时间(0.155 秒)
Finding Computationally Inexpensive Methods to Model the Flow Past Heavy Vehicles and the Design of Active Flow Control Systems for Drag Reduction
Finding Computationally Inexpensive Methods Model Flow Past Heavy Vehicles Active Flow Control Systems Drag Reduction
2015/7/6
This paper explores the use of computational tools to analyze the aerodynamic e ects that Coanda jets have on the drag, stability and maneuverability of heavy vehicles. To facilitate the analysis and ...
Active Control of Seat Vibrations of a Vehicle Model Using Various Suspension Alternatives
PID control Vehicle model Active suspensions
2009/10/12
The dynamic behavior of a non-linear 8 degrees of freedom vehicle model having active suspensions and a PID controlled passenger seat is examined. The non-linearity occurs due to dry friction on the d...
半主动油气悬架系统模糊控制（Fuzzy Control System for Semi-active Hydro-pneumatic Suspension）
油气悬架 半主动悬架 模糊控制
2009/5/22
以两自由度悬架模型为研究对象，针对半主动油气悬架系统，提出了以悬架动挠度为控制目标的模糊控制策略，并对系统进行仿真和实车道路试验。结果表明，采用模糊控制的半主动油气悬架在衰减车辆振动、提高车辆行驶平顺性方面优于传统被动油气悬架。
基于遗传算法和神经网络的车辆主动悬架控制技术（Control Technology of Vehicle Active Suspension Based on Genetic Algorithm and Neural Network）
车辆 主动悬架 神经网络
2009/5/22
采用遗传算法与神经网络相结合的控制策略，以四自由度车辆主动悬架半车模型为仿真对象，与传统的被动悬架进行控制性能比较。通过改变神经网络训练参数、遗传算法输入函数以及车速，对系统的响应特性进行了分析。结果表明车辆主动悬架控制策略可以减小车辆的振动，改善车辆行驶平顺性。
考虑时域硬约束的车辆主动悬架H∞控制（H∞ Control of Active Suspensions with Time-domain Hard Constraints）
车辆 主动悬架 时域硬约束
2009/5/22
提出了考虑时域硬约束条件的车辆主动悬架H∞输出反馈控制器设计方法。基于线性矩阵不等式处理方法，提出并证明了该控制器存在的充分条件。以提高车辆乘坐舒适性为目标，取车身垂直加速度响应为控制输出向量，悬架动挠度、车轮动静载荷比响应和所需控制力为约束输出向量，基于1/4车辆模型进行了主动悬架设计。仿真结果表明，即使车辆模型参数存在一定程度的不确定性，提出的控制策略在提高车辆乘坐舒适性的同时，能很好地兼顾车...
Improvement of road safety using passive and active intelligent vehicle safety systems
IVSS eSafety intelligent car eCall active safety passive safety
2010/11/1
Following the measures foreseen in the Transport White Paper 2001, situation of road safety has improved. Road fatalities have declined by more than 17 % since 2001 in the EU. However, with around 41 ...
Active twist of model rotor blades with D-spar design
active twist Macro Fiber Composite (MFC) helicopter rotor blade optimal design finite element method
2010/11/1
The design methodology based on the planning of experiments and response surface technique has been developed for an optimum placement of Macro Fiber Composite (MFC) actuators in the helicopter rotor ...
Road identification for its-integrated systems of automotive active safety
antilock braking systems automotive control fuzzy systems fuzzy modeling tyres
2010/11/2
The paper discusses several aspects of active safety control for automotive application. Particular emphasis is placed on the fuzzy logic determination of friction properties of a tyre-road contact. A...
The intelligent systems of automotive active safety
safety tire grip slip intelligent system
2010/11/3
The subject of research is the idea of creation automobile systems of active safety basing on predictable use of potential possibilities of a wheel coupling with a road. Together with the generally ac...