查询词典 brake-shoe

If the tractor loses power there is no engine brake possible and the forces involved can be too high for a farmer to apply a hand operated mechanical brake.

如果拖拉机断电，没有发动机制动可能和有关部队可能太高了农民采用人手操作的机械制动。

The brake power is above 60﹪ of the weight of car and the hand-brake power is above 20﹪ of the weight of car. So the check effect is also O.K.

煞车力是车辆重的60﹪以上，手煞车力是车辆重的20﹪以上，所以检验结果也是合格的。

This article advances a new method through analyzing the braking system of the mine hoist and the available testing methods of parameters. This method can be used to test the parameters of braking system by means of turning off power, applying the brake, detecting the distance and the hodograph of run after it, and basing on the effect of applying the brake. The parameters can be tested and displayed by using the system consisting of PC and TMS320F240 DSP produced by TI company.

本文通过对提升机闸控系统及其现有闸控参数检测方法的分析，提出了一种在提升机低速运行时，通过切断电源、施加制动闸，检测施闸后的行程和速度图，依据提升机制动效果，测试出提升机闸控系统参数的方法，并采用TI公司生产的TMS320F240 DSP和PC机组成的两级计算机系统来实现参数的检测和显示。

It can measure the brake clearance of hoister of coal mine,track the brake actions and display the clearance value in real time,and alarm when the clearance value goes beyond the demand of the coal mine security rules.

介绍一种基于单片机的闸间隙检测技术，利用它可以实现对煤矿提升机制动闸的间隙测量，实时跟踪闸的动作，显示闸间隙值，并在提升机制动闸的间隙超出煤矿安全规程要求时报警指示。

ABSTRACT Aiming at problems of trans-vector controller in a vehicle-carried induction motor such as variable rotor and stator resistance following motor temperature, and their inductance varying with flux saturation degrees. Firstly, CSI and VSI are introduced, for CSI, it can hold the advantages both FOC and DTC using stator flux directional, PI parameter and simulation are also introduced. Secondly, equations of IM in the synchronous rotary frame and its static counterpart, as figuring in the saturation condition of magnetic field, are dealt in this paper and the simulation results are presented. Thereafter, the parameter designing of PI trans-vector controller is processed, which features the non-linear model. In practical realization, as neglecting the dynamical change of motor inductance, this paper employs online modification of inductance parameters, according to the flux saturation, then transforms the non-linear equations into linear ones, and so compacts the structure of controller. Thirdly, in view of the maximum torque output is extraordinary requisite when Electrical Vehicle start up, accelerate, and overtake, this paper issues the maximum torque when both inverter and battery capacity is corporeally definite. Fourthly, on-line differentiating and analyzing both rotor's time constants and its flux by using the expanding order reduction and discrete Kalman filter equation are fathomed, in order to realize high-performance trans-vector algorithm, and also the simulation results are presented. Fifthly, the close-loop regenerative brake system, when the EV's torque is set constant, is deduced; at the same time, unification of electric drive model and brake model is executed. Combined with maximum charge current demands, the mathematical model for online yielding torque as a demand.

本论文针对车载异步电机在矢量控制器所遇到的问题：定转子电阻随温度变化及随电机饱和程度变化的转子电感及定子电感而影响电机调速性能提出一套完整的解决方案：分析了电流型逆变器和电压型逆变器在实现矢量控制时控制器参数的计算，分析出对于电流型逆变器在采用定子磁场定向时，其性能同时具有矢量控制和直接转矩控制两者的优势，并对电压型逆变器在转子磁场定向下的模型进行了仿真研究；建立异步电机非线性模型，推导出考虑磁饱和时异步电机在同步旋转坐标系及静止坐标系下的方程，并做出了仿真结果，建立异步电机在非线性模型下的矢量控制调节器的PI参数设计，在实际应用中，若忽略电机电感的动态变化，可以根据当前的磁路饱和状态而在线修正电感参数，从而将非线性方程线性化，降低控制器的复杂度；考虑到电动汽车在起动和加速超车时需要电机有最大转矩输出，本文讨论在逆变器容量一定和电池供电能力有限的情况下电机最大转矩输出问题；推导了异步电机扩展降阶、离散卡尔曼滤波方程在线辨识转子时间常数和转子磁通，用于实现高性能的矢量控制算法，并给出了仿真结果；推导出了电动汽车恒转矩给定的闭环回馈制动系统，实现了电动控制模型和制动模型的统一，而且结合铅酸电池最大充电电流的要求，为制动转矩在线给定建立了数学模型；设计了基于双DSP系统的高性能矢量控制器软硬件框图，并以大量实验数据说明矢量控制在电动汽车应用的实际应用状况。

In the design process using cone brake cover state and work to achieve a state of interlocking brake.

在设计过程采用锥面制动端盖实现了工作状态和制动状态的互锁。

Are warped brake discs the main cause of brake judder?

变形的碟盘真的是造成煞车斗动的主因吗？

The large-size disc brake utilizes an advanced lattice design for more effective brake control and heat dissipation capability.

刹车盘采用先进的点阵设计大尺寸盘式制动器，充分体现别克品牌"动静合一"的内涵。

The large-size disc brake utilizes an advance d lattice design for more effective brake control and heat dissipation capability.

刹车盘采用先进的点阵设计大尺寸盘式制动器，充分体现别克品牌"动静合一"的内涵。

The large-size disc brake utilize s an advanced lattice design for more effective brake control and heat dissipation capability.

刹车盘采用先进的点阵设计大尺寸盘式制动器，充分体现别克品牌"动静合一"的内涵。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。