Phase detection apparatus and method
    1.
    发明授权
    Phase detection apparatus and method 失效
    相位检测装置及方法

    公开(公告)号:US5347857A

    公开(公告)日:1994-09-20

    申请号:US859530

    申请日:1992-06-01

    摘要: Machine assemblies often include driving and driven members such an engine associated with a driven load. These members typically include rotatable shafts (16, 18) interconnected by a flexible coupling element (20). System torsionals in such a machine often cause the shafts (16, 18) to be out of phase with one another. When this occurs, excessive energy is transferred to the coupling element (20). The subject apparatus (22) includes a device (24) for detecting and measuring rotational phase differences between driving and driven rotatable shafts (16, 18). The measured phase differences are compared with a reference phase difference level and an error signal is produced in response to the measured phase difference exceeding the reference level.

    摘要翻译: PCT No.PCT / US91 / 04009 Sec。 371日期1991年6月7日 102(e)1991年6月7日日期PCT 1991年6月7日提交。机器组件通常包括与被驱动负载相关的发动机和驱动构件。 这些构件通常包括通过柔性联接元件(20)互连的可旋转轴(16,18)。 这种机器中的系统扭转常常导致轴(16,18)彼此异相。 当这种情况发生时,过多的能量被传递到耦合元件(20)。 主体装置(22)包括用于检测和测量驱动和被驱动的可旋转轴(16,18)之间的旋转相位差的装置(24)。 将测量的相位差与参考相位差电平进行比较,并且响应于测量的相位差超过参考电平而产生误差信号。

    Apparatus and method for controlling the air/fuel ratio of an internal
combustion engine
    2.
    发明授权
    Apparatus and method for controlling the air/fuel ratio of an internal combustion engine 失效
    用于控制内燃机的空燃比的装置和方法

    公开(公告)号:US5036669A

    公开(公告)日:1991-08-06

    申请号:US456392

    申请日:1989-12-26

    摘要: In the subject invention an electronic control unit is used to control the air/fuel ratio in an engine combustion chamber in response to sensed engine parameters. More particularly, a magneto interface produces an ignition signal which is delivered to a spark plug. The spark plug is disposed essentially in the center of a combustion chamber, and it ignites an air/fuel mixture in the chamber in response to the ignition signal. A sensor such as an ion probe, for example, is further disposed in the combustion chamber longitudinally from the spark plug. The sensor produces an ionization signal in response to a flame front propagating past the sensor. A buffer circuit receives the ignition and ionization signals and produces a combustion signal in response to a time difference between the reception of these signals. The electronic control unit receives the combustion signal and calculates a combustion signal air/fuel ratio in response to the combustion signal. Both the combustion signal and the combustion signal air/fuel ratio are responsive to changes in the quality of the fuel in the combustion chamber. Subsequently, the control unit calculates a volumetric air/fuel ratio. The volumetric air/fuel ratio is indicative of the volume of air and fuel in the combustion chamber, and it does not account for fluctuations in fuel quality. Finally, a wastegate is controlled in response to the volumetric and combustion signal air/fuel ratios.

    摘要翻译: 在本发明中,电子控制单元用于响应于感测的发动机参数来控制发动机燃烧室中的空气/燃料比。 更具体地,磁接口产生一个点火信号,该点火信号被传送到火花塞。 火花塞基本上设置在燃烧室的中心,并且它响应于点火信号点燃室内的空气/燃料混合物。 诸如离子探针的传感器例如进一步从火花塞纵向设置在燃烧室中。 传感器响应于传播通过传感器的火焰前沿产生电离信号。 缓冲电路接收点火和电离信号,并响应于这些信号的接收之间的时间差产生燃烧信号。 电子控制单元接收燃烧信号并根据燃烧信号计算燃烧信号空气/燃料比。 燃烧信号和燃烧信号空气/燃料比均响应于燃烧室中燃料质量的变化。 随后,控制单元计算体积空燃比。 体积空气/燃料比表示燃烧室中的空气和燃料的体积,并且不考虑燃料质量的波动。 最后,响应于体积和燃烧信号空气/燃料比来控制废气门。

    Locomotive dynamic brake control
    3.
    发明授权
    Locomotive dynamic brake control 失效
    机车动态制动控制

    公开(公告)号:US5041772A

    公开(公告)日:1991-08-20

    申请号:US578962

    申请日:1990-09-07

    IPC分类号: B60L7/04 B60L3/10 B60L7/12

    CPC分类号: B60L3/10 B60L7/12 B60L2200/26

    摘要: An apparatus for controlling dynamic braking in a vehicle having at least one drive motor of the type having an armature and a field. The motor is adapted to function as an alternator during dynamic braking for dissipating power through a resistor grid. The vehicle includes a field current controller for regulating the level of dynamic braking by controlling the current level through the motor field. A brake level selector is provided for producing a desired braking level signal. A field current sensor senses the current level in the motor field and produces an actual field current signal. A grid current sensor senses the level of current flowing through the resistor grid and produces an actual grid current signal. A controller receives the desired brake level signal, the actual field current signal, and the actual grid current signal. The controller produces a first desired field current signal and a desired grid current signal in response to the desired brake level signal. The controller further produces a second desired field current signal in response to the actual field current, actual grid current, and desired grid current signals, compares the first and second desired current field and produces a final desired field current signal responsive to the compared signals. The field current through the motor is controlled in response to the final desired field current signal.

    摘要翻译: 一种用于控制车辆中的动态制动的装置,其具有至少一个具有电枢和磁场的驱动电动机。 电动机适用于在动态制动期间用作交流发电机,以通过电阻网格耗散功率。 该车辆包括一个励磁电流控制器,用于通过控制电机电流的电流来调节动态制动的电平。 提供制动电平选择器以产生期望的制动电平信号。 场电流传感器感测电动机电场中的电流水平,并产生实际的励磁电流信号。 电网电流传感器感测流过电阻网格的电流电平,并产生实际的电网电流信号。 控制器接收所需的制动电平信号,实际励磁电流信号和实际电网电流信号。 控制器响应于期望的制动电平信号产生第一期望的励磁电流信号和期望的电网电流信号。 控制器还响应于实际场电流,实际电网电流和期望的电网电流信号产生第二期望的励磁电流信号,比较第一和第二期望电流场,并响应于所比较的信号产生最终期望的励磁电流信号。 响应于最终期望的励磁电流信号来控制通过电动机的励磁电流。

    Turbo compounded fuel supply system for a gaseous fuel engine
    4.
    发明授权
    Turbo compounded fuel supply system for a gaseous fuel engine 失效
    用于气体燃料发动机的涡轮复合燃料供应系统

    公开(公告)号:US5899070A

    公开(公告)日:1999-05-04

    申请号:US742423

    申请日:1996-10-30

    摘要: In a turbo compounded air and fuel supply system for a gaseous fuel engine, separate turbochargers are utilized to compress the air and gaseous fuel. A first turbocharger has a first turbine connected to an exhaust line from the engine and a first compressor having an inlet open to a source of air. A compressed air supply line has one end connected to the outlet from the first compressor and its other end connected to an engine air inlet. A gaseous fuel supply line has one end connected to a source of low pressure gaseous fuel. A second turbocharger has a second turbine connected to the exhaust line from the engine and has a second compressor with an inlet connected to the gaseous fuel supply line. A high pressure gaseous fuel supply line has one end connected to the outlet of the second compressor and its other end connected to an engine fuel inlet. A computer controlled wastegate valve in the exhaust line allows a portion of the exhaust to be bypassed around the second turbine. Thus, the present invention utilizes waste energy from the engine to compress both the air and fuel supply to a gaseous fuel engine rather than by some external compressor or a device which draws power directly from the engine.

    摘要翻译: 在用于气体燃料发动机的涡轮复合空气和燃料供应系统中,使用单独的涡轮增压器来压缩空气和气体燃料。 第一涡轮增压器具有连接到来自发动机的排气管线的第一涡轮机和具有通向空气源的入口的第一压缩机。 压缩空气供应管线的一端连接到来自第一压缩机的出口,另一端连接到发动机空气入口。 气体燃料供应管线的一端连接到低压气体燃料源。 第二涡轮增压器具有连接到来自发动机的排气管路的第二涡轮机,并且具有连接到气体燃料供应管线的入口的第二压缩机。 高压气体燃料供应管线的一端连接到第二压缩机的出口,另一端连接到发动机燃料入口。 排气管路中的计算机控制的废气门阀允许废气的一部分围绕第二涡轮机旁路。 因此,本发明利用来自发动机的废能量将空气和燃料供应压缩到气体燃料发动机,而不是通过一些外部压缩机或直接从发动机牵引电力的装置。

    Traction control for DC electric motor
    5.
    发明授权
    Traction control for DC electric motor 有权
    直流电动机牵引力控制

    公开(公告)号:US08310176B2

    公开(公告)日:2012-11-13

    申请号:US12643779

    申请日:2009-12-21

    IPC分类号: H02P5/00

    摘要: A method of propelling a mobile machine is disclosed. The mobile machine may have a plurality of DC traction motors, including a first DC traction motor and a second DC traction motor. The method may include driving a first traction device with the first DC traction motor, the first DC traction motor including a first field coil and a first armature electrically connected in series. The method may also include driving a second DC traction device with the second DC traction motor electrically connected in series with the first DC traction motor, the second DC traction motor including a second field coil and a second armature electrically connected in series. Additionally, the method may include, in response to slippage of the first traction device, bypassing at least a portion of electric current flowing through the first field coil around the first armature. The method may also include directing at least a portion of the bypassed electric current through the second field coil and the second armature.

    摘要翻译: 公开了一种推动移动机器的方法。 移动机器可以具有多个直流牵引马达,包括第一直流牵引马达和第二直流牵引马达。 该方法可以包括用第一直流牵引电动机驱动第一牵引装置,第一直流牵引电动机包括串联电连接的第一励磁线圈和第一电枢。 该方法还可以包括利用与第一DC牵引电动机串联电连接的第二DC牵引电动机来驱动第二DC牵引装置,第二DC牵引电动机包括串联电连接的第二励磁线圈和第二电枢。 另外,该方法可以包括响应于第一牵引装置的滑动绕过围绕第一电枢流过第一场线圈的至少一部分电流。 该方法还可以包括引导旁路电流的至少一部分通过第二励磁线圈和第二电枢。

    TRACTION CONTROL FOR DC ELECTRIC MOTOR
    7.
    发明申请
    TRACTION CONTROL FOR DC ELECTRIC MOTOR 有权
    直流电机牵引控制

    公开(公告)号:US20100162918A1

    公开(公告)日:2010-07-01

    申请号:US12643779

    申请日:2009-12-21

    IPC分类号: B61C3/00 H02K23/08 H02P5/50

    摘要: A method of propelling a mobile machine is disclosed. The mobile machine may have a plurality of DC traction motors, including a first DC traction motor and a second DC traction motor. The method may include driving a first traction device with the first DC traction motor, the first DC traction motor including a first field coil and a first armature electrically connected in series. The method may also include driving a second DC traction device with the second DC traction motor electrically connected in series with the first DC traction motor, the second DC traction motor including a second field coil and a second armature electrically connected in series. Additionally, the method may include, in response to slippage of the first traction device, bypassing at least a portion of electric current flowing through the first field coil around the first armature. The method may also include directing at least a portion of the bypassed electric current through the second field coil and the second armature.

    摘要翻译: 公开了一种推动移动机器的方法。 移动机器可以具有多个直流牵引马达,包括第一直流牵引马达和第二直流牵引马达。 该方法可以包括用第一直流牵引电动机驱动第一牵引装置,第一直流牵引电动机包括串联电连接的第一励磁线圈和第一电枢。 该方法还可以包括利用与第一DC牵引电动机串联电连接的第二DC牵引电动机来驱动第二DC牵引装置,第二DC牵引电动机包括串联电连接的第二励磁线圈和第二电枢。 另外,该方法可以包括响应于第一牵引装置的滑动绕过围绕第一电枢流过第一场线圈的至少一部分电流。 该方法还可以包括引导旁路电流的至少一部分通过第二励磁线圈和第二电枢。

    Acceleration based control system for speed governing
    10.
    发明授权
    Acceleration based control system for speed governing 有权
    加速度控制系统

    公开(公告)号:US6112719A

    公开(公告)日:2000-09-05

    申请号:US212058

    申请日:1998-12-15

    摘要: In one embodiment, the present invention is a method for governing the speed of a device that involves generating a command signal based on a desired change in acceleration, the inertia of the device, and a load associated with the device. The command signal is output to actuating means for changing the acceleration of the device. A speed sensor provides a signal indicative of the speed of the device such as an engine, a movable machine, or a movable component of a machine. An error signal based on the difference between the actual speed of the device and the desired speed of the device is calculated. The desired change in acceleration is computed based on the error signal and a gain factor that is proportional to a desired response time of the control system. The desired change in acceleration is multiplied by an inertial gain factor that is derived from a previous command signal and the change in the speed of the device that resulted from a previous command signal. The inertial gain factor is computed and updated at selected intervals to account for changes in the inertia and load.

    摘要翻译: 在一个实施例中,本发明是一种用于控制装置的速度的方法,该装置涉及基于加速度的期望变化,装置的惯性以及与装置相关联的负载来生成指令信号。 命令信号输出到致动装置,用于改变装置的加速度。 速度传感器提供指示诸如机器的发动机,可移动机器或可移动部件的装置的速度的信号。 计算出基于设备的实际速度与设备的期望速度之差的误差信号。 基于误差信号和与控制系统的期望响应时间成比例的增益因子来计算加速度期望的变化。 加速度的期望变化乘以从先前的命令信号导出的惯性增益因子和由先前的命令信号产生的装置的速度的变化。 以选定的间隔计算和更新惯性增益系数,以考虑惯性和负载的变化。