查询词典 vehicle

But in fact, the system of half-tracked air-cushion vehicle is over complicated. When the vehicle drives in an unknown soil, the parameters and structures of controlled member will change with load or disturbances. This system is nonlinear and time-variant, and it is very difficult to analyze its transfer function and state function quantitatively.

然而在实际工作中，由于本课题中的系统过于复杂，当行驶在未知土壤条件下时，被控对象往往随着载荷或干扰因素影响，其特性参数或结构发生改变，属于非线性和时变性的不确定系统，它的传递函数或状态方程难于用传统的定量分析方法加以实现。

In order to prove the reliability, test studies have been primarily carried out in the indoor soil bin. The data of the vehicle driving state parameters under the same or different terrain are analyzed. The process curves are compared by different control schemes. The theoretical model of the optimum driving state is reliable and fuzzy control scheme is feasible. The disturbances and unknown factors of control system are analyzed. Test results prove that the half-tracked air-cushion vehicle can drive steadily under control of the computer. At the same time the sensors used to measure soil mechanics characteristics on line need to be developed. And it is the important problem to be solved in the future study. The necessary regulation and correction are put up. So the studies in this paper provide some instruction for the further research work.

为了验证本文提出的最佳工作状态及最佳垫压理论，并分析控制系统的可靠性和稳定性，本文在半履带式气垫车的模型车上，在室内土槽中进行了初步的实车性能和理论验证试验，考察了在同种和不同土壤条件下气垫车的行驶状态参数的测量数据，比较了采用不同控制方法下的过程曲线，验证了最佳工作状态的理论模型和模糊控制系统方案的可行性与可靠性，从而保证了采用自整定模糊PID控制器能够使半履带式气垫车在稳定行驶最佳工作状态下；同时通过试验研究，分析了系统中各干扰与未知因素，对控制方案进行了相应的调整和修正，为今后进一步的研究工作提供了一定的指导。

It points out the topic, meaning and creative; introducing the consist and principle of the intelligent vehicle navigate system in chapter 2; analyzing the method of GPS-oriented and the error origin in chapter 3; analyzing briefly the principle and merged method of interspaced diversity and resist multi-decline in chapter 4; introducing the hardware and software realization of ambulant station of intelligent vehicle navigate /dispatcher system based on multi-GPS antenna in detail in chapter 5; giving the debugging and simple trial result of ambulant station in chapter 6; The lasted propose solving tactics to problem that exist in studying, draws a conclusion of this thesis and plans the future researching works.

指出本课题的研究的主题、意义及创新点；第二章概括性介绍了智能车辆定位导航系统的组成与原理；第三章分析了GPS定位的方法和误差来源；第四章重点分析了空间分集抗多经衰落的原理和信号合并方法；第五章详细介绍了多GPS天线智能车辆导航/调度系统车载台的软硬件实现；第六章给出了车载台的调试和简单试验结果。最后对研究中存在的问题提出了解决策略及下一步的研究方向。

The pressure distribution on external surface of the test vehicle was analyzed when it passed the anemology station on the east of"Mengjin"from upward and downward. The vehicle aerodynamic forces by piecewise integrating technology were obtained.

摘 要：对试验列车上、下行通过"猛进东"测风点时的车体表面压力分布情况进行分析，采用分块积分法得出试验列车上、下行通过"猛进东"测风点的气动力。

Experiments using the down-scaled vehicle prove that the static direct yaw moment control significantly reduces the side slip angle at the center of the gravity Also the experiment results indirectly show that the 2 degree of freedom vehicle model is rather accurate.

仿真实验表明集成控制系统可以使汽车在各种运行情况下质心处侧偏角很小的同时，有效跟踪理想横摆角速度响应。模型小车实验也证明静态横摆力矩控制可有效减小质心处的侧偏角，并间接证明二自由度汽车模型准确性。

The usage of vehicle security crash anthropomorphic can not be replaced in vehicle industry security field.

汽车安全问题随着汽车数量的增多日益受到重视。

This paper first introduces the theory and method of vehicle automated driving based on magnetic markers,analyzes the results of vehicle automated driving based on the apery control and points out the shortcoming of it.

介绍了基于磁道钉导航的车辆自动驾驶的原理和实现方法，分析用此方法建立仿人控制模型来实际控制车辆自动驾驶的结果，指出仿人控制模型的不足之处。

The climbing load design method for motor vehicle driving axle half shaft is a computational method recommended by IVECO,which is formed on the basis of driving torque required for a motor vehicle in climbing a 18% gradient of slope and combined with approximate fatigue limit of material.

汽车半轴杆径的坡道载荷设计法，是在IVECO推荐的汽车在18％坡道上所需驱动力矩基础上，融合了材料的近似疲劳极限而成的计算方法。

Dongben Industry boasts of several subsidiaries: Dongben Mechanical Company, Importing and Exporting Company, Frame Manufactory, Fiber-glass Factory, Plastic Factory, Painting Factory and Two-wheeled Vehicle Division, Engine Division, Special Vehicle Division and Tricycle Division. With annual production capacity of 1,000,000 units of motorcycles, moped bicycles, ATVs, tricycles, motorcycle engines, gasoline boosting bicycles engines, Dongben's products are exported to Europe, America, Arica, South-east Asia and some other countries.

东本工业下设东本机械公司、进出口公司、销售公司、车架厂、玻璃钢厂、塑料件厂、涂装厂以及两轮机车、发动机、特种车、三轮车等四个事业部，现已形成两轮摩托车、汽油机助力自行车、沙滩车、卡丁车、三轮摩托车、摩托车发动机、助力自行车专用汽油机等100万台的年生产能力，产品远销欧、美、非洲及东南亚市场。

Automatic transmission takes an important role in vehicle electronics and it is the trend of construction vehicle...

车辆传动系的自动变速是车辆电子技术的一项重要内容，也是目前工程车辆发展的趋势。

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。