行驶

Based on mechanism and vehicle theories theoretical analysis is pursued and normal driving conditions are put forward. The relations are analyzed between load distribution and power consumption. Mechanical formula is proposed. Furthermore in this paper the theoretical model of the total power consumption is established, and the relations of the total minimized power consumption with the air-cushion pressure and the fan revolution are discussed. The optimum operation point is put forward. The dynamic digital simulation studies are carried out on the operating procedure of the half-track air-cushion vehicle on soft terrain. Mechanical parameters and soil mechanics characteristics affecting vehicle power consumption and riding performance are analyzed. At the same time according to the model formula, the automation control problem is discussed. It is a theoretical instruction for further automation control.

本文还从力学和车辆原理的角度进行了理论分析，推导了半履带式气垫车的需求功率及正常行驶条件，研究了气垫压力和功率消耗之间的关系，提出了力学模型公式；建立了半履带式气垫车总功率消耗的理论模型，研究了最小功率消耗时功率与垫压及表征气垫车行驶状态的各参数的关系，分析了相应的影响因素，并提出了最佳工作状态的定义；同时进行了半履带式气垫车在软地面的行驶过程的动态数字仿真试验研究工作，对影响车辆功率消耗和行驶平顺性的各力学参数和土壤参数进行了分析，得到了各运行状态参数的变化规律，验证了最佳工作状态和最佳垫压的理论，根据力学模型公式对进一步的自动控制问题进行了探讨，为系统的控制提供了理论指导。

And the frontal technique is adapted to solve the FE equations. The techniques are studied to deal with the large slip frictional contactproblems between a deflectable body with large deformation and a rigid bodywith flat or curved surface.

车辆在行使过程中，会出现多种多样的行驶工况，如驱动、制动及转弯侧偏等等，同时，车辆行驶的路面也是多种多样的，如凹凸不平的障碍路面以及越野行驶中的松软地面等等。

This research probes into the result to recognize, In motorcycle go space, go motorcycle of road space collect and plan, the space offering the motorcycle to go causes trouble reducibly, should examine the condition of the road promptly, the short medium and long-term tactics of positive planning are the objectives, strengthen ' motorcycle waiting for area, motorcycle turn left type of two sections, motorcycle special lane ', etc . way right plan fear to set up, to the people The motorcycle that life relies on, know the reason Traffic engineering and management specialized input, make motorcycle traffic the people correctly Life wealth Threaten, does not become again The people Nightmare of life.

本研究探讨结果认爲，在机车行驶空间方面，只要将道路上的机车行驶空间加以规划，提供机车行驶的空间便可减少肇事，应即检讨道路条件，积极规划短中长期策略为规划目标，并强化「机车等待区，机车二段式左转、机车专用道」等路权规划布设，对学生上下学依赖的机车，会因爲交通工程与管理专业的投入，使得机车交通对学生生命财産威胁，不再成爲生活的梦魇。

In the design of the road test, a reflectional infrared sensors is used to detect the black line on the road to judge the trolley's position; on trolley's speed controlling, the control system uses PWM technology to control the rotational speed of electric motors, and complete the speed real-time control to electric cars in d

在路面检测设计中，小车采用反射式红外传感器来检测其行驶路面上的黑线，以判断小车行驶的位置；在控制小车行驶速度上，系统利用PWM技术控制电动机的转速，通过程序完成对电动小汽车在不同路段的行驶速度实时控制；最后采用双电源供电，用以保证系统的运行更加稳定，可靠。

A co-simulation is investigated combined with control model in MATLAB/Simulink and mechanical model in ADAMS. The simulation results prove that when steering a large angle on slippery roads, yaw compensation can improve the stability of automobiles; when steering at a low speed, return compensation can improve the lack of returnability caused by friction loss torque; and when steering at a high speed, damping compensation can reduce the oscillation of steering wheel, improve the maneuverability and stability and also avoid overshoot.

仿真结果证明，在潮湿光滑路面上行驶过程中，进行大角度快速转向，在助力中加入横摆补偿可以提高汽车的稳定性；在汽车低速行驶转向回正时，施加回正补偿可以改善汽车因摩擦转矩而导致的回正不足；在汽车高速行驶时施加阻尼控制，可以衰减方向盘抖动现象，提高操纵稳定性，防止打手现象发生。

The brake system is the instrument of reducing speed during vehicle going,stopping or stationing at up-slope,which is important part of vehicle and relative to the security of vehicles.

制动系统是车辆行驶过程中降低行驶速度、停止行驶或在坡道上停车的装置，是车辆的重要的部件，它直接关系到车辆的安全。

Kruz 汽车定速行驶, kruz The Grand Cherokee wends its lazy way along the gently curving road, cruising at 40 km/h through rural Michigan's autumnal landscape of gold-and-orange-dappled trees.

大型切诺基吉普车沿着弯度不大的路缓缓前行，以时速 40 公里的速度在密歇根乡间的秋色中缓缓行驶，沿途可见金，橙色斑驳的树木。

To 23 p.m. everyday on roads within the fourth ring road; autocycles with "Jing B" license plate are forbidden to run on roads within the fourth ring road (not including the complementary roads of the fourth ring road ) all day long; tractors, tricars and low speed freight trucks are forbidden to run on roads within the fifth ring road all day long.

货运机动车、摩托车、拖拉机、三轮汽车和低速货车除遵守上述规定外，仍执行现有限行措施，即：四环路以内道路，每天6时至23时，禁止货运机动车行驶；四环路以内道路，全天禁止京B号牌的摩托车行驶；五环路以内道路，全天禁止拖拉机、三轮汽车和低速货车行驶。

Based on the multi-body dynamics and virtual prototyping technology,using the software ADAMS,which include two states: straight line and swerving,it was pointed out that crosswinds had great effect on vehicle steering stability and safety.

分别在有无阵风作用的情况下，以多体动力学为理论基础，采用虚拟样机技术，用ADAMS软件进行了汽车的直线行驶及转向行驶能力的分析，指出侧风对汽车操纵稳定性的影响将直接影响到汽车的高速行驶安全性。

In order to reveal the effects of the longitudinal spacing between the vehicles and vehicle number in platoon on the aerodynamic drag coefficient of vehicle platoon,the numerical simulation method was used to study the aerodynamic characteristics of 11 cases of a serial vehicle platoon in the intelligent transport system.

为了研究队列行驶时，车辆前后间距对队列行驶车辆气动特性的影响以及队列中车辆数目对气动阻力系数的影响，采用数值模拟方法分别对智能交通系统中队列行驶车辆11种不同情况下车辆的气动特性分别进行了研究。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。