知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

5 条记录 (耗时 0.013 秒)

    POWER ARCHITECTURE AND BRAKING CIRCUITS FOR DC MOTOR-PROPELLED VEHICLE
    3.
    发明申请
    POWER ARCHITECTURE AND BRAKING CIRCUITS FOR DC MOTOR-PROPELLED VEHICLE 审中-公开
    用于直流电机驱动的车辆的动力结构和制动电路

    公开(公告)号：US20080290825A1

    公开(公告)日：2008-11-27

    申请号：US12127317

    申请日：2008-05-27

    申请人： Alain St-Jacques ,  Andrew C. Tarnow ,  Frank Wegner Donnelly

    发明人： Alain St-Jacques ,  Andrew C. Tarnow ,  Frank Wegner Donnelly

    IPC分类号： H02P3/12

    CPC分类号： B60L7/12 ,  B60L2200/26 ,  B60L2220/18 ,  Y02T10/7258

    摘要： A dynamic braking circuit that can be operated with stability over both high and low speed regimes. This circuit has the advantage of using fewer components than previous circuits. In addition, when in braking mode, the armature and field currents tend to oppose each other across the main braking switch hence reducing electromechanical stresses when in high current regime. According to a second embodiment, a dynamic braking circuit implements a “soft” extended braking function with the capability of providing a smoother braking action at high braking effort at little extra cost resulting from the replacement of a contactor by a reverser. The main advantages of this preferred embodiment are that the current generated by the armatures during braking can be controlled independently from the excitation of the field windings at low speeds and that it enables simultaneous self supply, regeneration and dynamic braking.

    摘要翻译： 一种动态制动电路，可在高速和低速状态下稳定运行。 该电路具有比以前的电路使用更少的组件的优点。 另外，当处于制动模式时，电枢和励磁电流横跨主制动开关往往彼此相对，因此在高电流状态下降低机电应力。 根据第二实施例，动态制动电路实现“软”延长制动功能，其能够以高制动力提供更平稳的制动作用，而由于由反向器更换接触器导致的额外成本。 该优选实施例的主要优点是可以独立于在低速下对励磁绕组的励磁来控制在制动期间由电枢产生的电流，并且其能够同时进行自供电，再生和动态制动。

    System and method for detecting wheel slip and skid in a locomotive
    4.
    发明授权
    System and method for detecting wheel slip and skid in a locomotive 有权
    机车车轮滑移检测系统及方法

    公开(公告)号：US09102309B2

    公开(公告)日：2015-08-11

    申请号：US11845536

    申请日：2007-08-27

    申请人： Andrew C. Tarnow ,  Serge Mai

    发明人： Andrew C. Tarnow ,  Serge Mai

    IPC分类号： B60K28/16 ,  B60L3/10 ,  B60T8/17 ,  B61C15/14 ,  B61K9/08

    CPC分类号： B60T8/1705 ,  B60L3/10 ,  B60L2200/26 ,  B60L2220/18 ,  B60T2250/04 ,  B61C15/14 ,  B61K9/08

    摘要： A system and a method for determining a true acceleration and velocity of a locomotive and for controlling wheel slip and wheel skid of the locomotive is disclosed. The system, using accelerometers, can control the velocity of the wheels of the locomotive based on the comparison between a true locomotive velocity signal and a wheel velocity signal such that an actual tangential speed of the wheels is regulated to correspond to the true locomotive longitudinal velocity plus an allowance velocity for creepage. The accelerometer can also be used at the same time for impact detection purposes. Furthermore, if a set of accelerometers are used, the locomotive can also play a diagnostic role for track quality reporting in rail yards. The control of wheel slip and wheel is particularly useful in DC locomotive applications with individual axle control.

    摘要翻译： 公开了一种用于确定机车的真实加速度和速度并且用于控制机车的滑轮和车轮滑行的系统和方法。 使用加速度计的系统可以基于真实的机车速度信号和车轮速度信号之间的比较来控制机车的车轮速度，使得车轮的实际切向速度被调节以对应于真实的机车纵向速度 加上爬电距离的速度。 加速度计也可以同时用于冲击检测目的。 此外，如果使用一组加速度计，则机车还可以对轨道轨道质量报告起到诊断作用。 车轮滑动和车轮的控制在具有单独轴控制的直流机车应用中特别有用。