查询词典 target braking

The effects of engine braking and CVT speed ratio control on the braking performance of a hybrid electric vehicle are analyzed.A braking control strategy is proposed,in which regenerative braking is adopted for low braking intensity,the combination of regenerative braking and friction braking is used for high braking intensity,and the engine braking is also added for emergency braking.

分析了混合动力汽车制动过程中发动机反拖制动和CVT速比控制对车辆再生制动性能的影响，提出了低制动强度下仅由电机再生制动、高制动强度下电机与制动器共同制动和紧急制动时发动机参与制动的再生制动策略。

Considering the braking performance and stability, most HEV employs both ABS (ABS: Anti-Lock Braking System) hydraulic braking system and regenerative braking system at the same time, so how to make the hydraulic braking system assorts with the regenerative braking system, to get more regenerative energy under assurance of braking safety is a key technique for HEV research.

考虑到电机的制动效能以及制动稳定性，当前的混合动力汽车大都采用电、液制动相结合的混合制动方案，即保留了原有的ABS(ABS： Anti-Lock Braking System)液压制动控制系统。

The braking efficiency is a main performance index in aircraft antiskid braking systems, the author studies the relationship between control accuracy and braking efficiency, so that we may design antiskid braking systems by means of braking efficiency directly, and this is the second creative point.

针对一种常用的描述结合系数和滑移率函数关系的表达式，研究了最佳滑移率、结合系数最大值和机轮抱死时的结合系数与该关系式中三个参数取值范围之间的联系，细化了这些参数的取值范围，减轻了应用迭代法求参数具体值的计算工作量。

By analyzing the braking scheme of linear metro and power loss in braking process, a combined braking control strategy based on feedback braking and energy-consuming braking is put forward.

在此基础上，提出了一种将再生制动与直流能耗制动相结合的复合制动控制策略，并对复合制动过程中的能量损耗进行了分析。

Aiming at this problem, firstly, calculation formulae of utilization adhesion coefficient after installment of retarder were detailedly deduced. Then braking force distribution ratio , braking intensity and vehicle full-load parameters were taken as variables and inequalities which are about of retarder braking force , braking force distribution ratio , braking intensity and vehicle full-load parameters were established based on the ECE Law. The range of corresponding to any , as well as the most optimal matching between them, were obtained by solving these inequalities.

为此，论文在推导了安装缓速器后前、后轴利用附着系数、的计算公式基础上，基于ECE法规要求，以制动力分配比、制动强度及车辆满载参数为变量，建立了缓速器制动力关于车辆制动力分配比、制动强度和满载参数之间的多元不等式组，通过求解多元不等式组获得缓速器制动力与制动力分配比之间的取值关系，并从中得到二者之间的最优匹配。

In this chapter, three kinds of target recognition methods are performed, which are:①Target recognition method based on the description of polarization parameter plane. The echo polarization states of target are projected onto the polarization state plane described by the ellipticity ε and the tilt angle τ of the polarization ellipse, the change of parameter following ferquency becomes the chart. According to the changing trait of the chart, the multidimensional polarization feature space of target has been contructed. Furthermore, a series of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.②Target recognition method based on the description of Poincare polarization sphere. The echo polarization states of target expressed by Stokes vector are projected onto the Poincare polarization sphere. The conception of polarization ferquency stability, which is used in describing the dynamic distribution characteristics of the target echo polarization states on Poincare polarization sphere, has been defined. A group of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.③Target recognition method based on the description of frequency sensitivity. In accordance with the conception of the polarization state distance defined on Poincare polarization sphere, the frequency sensibility of the physical structure property of target has been investigated, the frequency distribution feature curves in PSD domain are obtained, and targets'features are extracted by means of the curve-fitting method with Least Square Criterion.

这章具体研究了基于三种极化散射特性描述的相应的目标识别方法：①基于极化参数平面描述的目标识别方法，将目标回波极化状态投影到以极化椭圆参数，即椭圆率角ε和倾角τ表征的极化状态平面上，参数随观测频率的变化就形成了图，根据图的变化特点构造了目标的多维极化特征空间，并提取了不敏感目标姿态变化的极化特征参数组来设计目标的识别器结构；②基于Poincare极化球面描述的目标识别方法，采用Stokes矢量表征目标回波的极化状态，并将其投影到描述极化状态的Poincare极化球面上，定义了极化频率稳定度的概念用以刻画目标回波极化状态在Poincare极化球面上的动态分布信息，提取了准方位不变性的目标极化特征，最后设计了目标的识别器结构；③基于频率敏感性描述的目标识别方法，通过在Poincare极化球面上所定义的极化状态距离的概念，研究的是复杂目标物理结构特性对探测信号频率的敏感程度问题，获得了在极化状态距离下的频率分布特性曲线，采用最小二乘估计曲线拟合方法，它既用于极化特征的降维，同时又直接将拟合参数作为目标的分类特征。

This paper describes the development of urban rail traffic and its significance and the necessity of electric braking. Air brake system and focuses on the analysis, the choice of the braking system, the structure and principles of pneumatic braking system. Finally, the prospect of urban rail transport vehicle braking system developments.

本文阐述了城市轨道交通及其发展的意义，分析了电气制动及其研究的必要性，并着重对空气制动系统进行了分析，分析了制动系统的选择、气动制动系统的结构及原理，最后展望了我国城市轨道交通车辆制动系统的发展趋势。

Vehicular braking systems can be divided into the braking system, brake system, emergency braking systems and auxiliary braking systems.

制动系统可分为行车制动系统、驻车制动系统、应急制动系统及辅助制动系统等。

Based on the analyses of braking moment distribution between axles of some typical modern passenger cars, this paper analysed first the forces on car and wheels during braking, then summarized the design of pipeline pressure of brake system, the requirements of ECE13 regulation an braking torque of front and rear wheel brake, and the analyses of braking force distribution between axles.the analysing result of a certain car showed that this method of design is practicable and reasonable.this paper will be he...

在对典型现代轿车制动力矩分配进行考察和分析的基础上，本文从整车和车轮在制动过程中受力分析出发，对制动器管道压力的设计、ECE13法则对前后轮制动器制动力矩的要求、轴间制动力分配的验证和分析等方面进行了较为系统的归纳和总结。通过实例分析表明，本文所述的方法较为实用合理，它为汽车产品设计以及有关部门采用有效的制动力矩分配设计方法、保证良好的汽车制动性能提供了一定的依据和参考。

Introduces a method of taking the value of braking deceleration when the shaft single-rope winding cage was braking,and breaking deceleration when overfall puts forward the gravity of a cage with braking force and the deceleration degree three correlation,puts forward reasonable value characteristic index of safety catch and overfall ,thus attaining to the optimun design of braking force.

介绍了立井单绳提升罐笼在断绳时制动减速度、过放时防坠器制动力的取值方法，提出了罐笼的重力与制动力及减速度三者间相互关系，防坠器及防过放制动力特性系数的合理取值，从而达到制动力优化设计。

Apllied the data of QuickBird-2——the highest resolution remote sensing,and based on the theory and methodology of fractal geometry,we have quantitatively studied remote sensing lineations in Gaolong gold deposit of Guangxi.

采用Quick Brid-2高分辨率卫星遥感数据，通过分形几何学的盒计维数法，定量研究广西高龙金矿区遥感线性构造。

So, sometimes, to change the color can not be your food (referring to the above-mentioned crustacean) has been a sign of boiling over.

所以，有时，来改变颜色，不能你的食物一直是沸腾了的迹象。