Electronic noise attenuation system
    1.
    发明授权
    Electronic noise attenuation system 失效
    电子噪声衰减系统

    公开(公告)号:US4783817A

    公开(公告)日:1988-11-08

    申请号:US002242

    申请日:1987-01-12

    摘要: An electronic noise attenuation system for attenuation of non-steady noise occurring in a propagation passage such a duct line by conducting adaptive controls by use of a computer system including a digital filter therein. Sensing microphones M.sub.1, M.sub.2 are located in the propagation passage with a cancellation sound source S therebetween at positions where the transfer functions Hr, Ht of a sound wave generated from the cancellation sound source are equivalent to each other. The output signal of the sensing microphone M.sub.1 and the phase-inverted version of the output signal of the sensing microphone M.sub.2 are input via an add circuit to the control part of the system. The system can prevent the occurrence of an acoustic feedback from the cancellation sound source to the sensing microphone M.sub.1 so as to realize a stable and highly accurate noise attenuation.

    摘要翻译: 一种电子噪声衰减系统,用于通过使用包括数字滤波器的计算机系统进行自适应控制来衰减在诸如管道线路的传播通道中发生的非稳定噪声。 感测麦克风M1,M2位于传播路径中,其中取消声源S在从取消声源产生的声波的传递函数Hr,Ht彼此相等的位置处。 感测麦克风M1的输出信号和感测麦克风M2的输出信号的相位反转版本经由加法电路输入到系统的控制部分。 该系统可以防止从消除声源到感测麦克风M1的声反馈的发生,以实现稳定和高精度的噪声衰减。

    Electronic noise attenuation system
    2.
    发明授权
    Electronic noise attenuation system 失效
    电子噪声衰减系统

    公开(公告)号:US5018202A

    公开(公告)日:1991-05-21

    申请号:US313475

    申请日:1989-02-22

    IPC分类号: H04R3/00 G10K11/178

    摘要: An electronic noise attenuation system for attenuating a sound wave propagated from a source of noise by generating another sound wave 180.degree. out of phase and having the same sound pressure with the propagated sound wave from electro-mechanic transducer means disposed in a propagation passage of sound waves. In the electronic noise attenuation system, a drive signal for drive the electro-mechanic transducer means is generated in accordance with output signals respectively output from upstream-side and downstream-side mechano-electric transducer means respectively disposed in the propagation passage with the electro-mechanic transducer means therebetween. Namely, the drive signal is created by performing an operation on a difference signal between the output signal of the upstream mechano-electric transducer means and the drive signal according to a given transfer function. Also, the transfer function is determined in accordance with the difference signal and the output signal of the downstream mechano-electric transducer means.

    摘要翻译: 一种电子噪声衰减系统,用于衰减从噪声源传播的声波,通过产生与声波传播通道中设置的来自机电传感器装置的传播声波相同并且具有相同声压180°的另一声波 波浪。 在电子噪声衰减系统中,根据从分别设置在传播路径中的上游侧和下游侧机械电传感器装置输出的输出信号,产生用于驱动机电换能器装置的驱动信号, 机械传感器装置在其间。 即,通过根据给定的传递函数对上游机电换能器装置的输出信号和驱动信号之间的差分信号执行操作来创建驱动信号。 而且,传递函数根据差分信号和下游机电换能器装置的输出信号来确定。

    Electric power steering apparatus
    3.
    发明授权
    Electric power steering apparatus 有权
    电动助力转向装置

    公开(公告)号:US07188702B2

    公开(公告)日:2007-03-13

    申请号:US10439606

    申请日:2003-05-16

    IPC分类号: B62D5/04

    摘要: An electric power steering apparatus is provided, which has a first device for detection of steering torque, a motor, a motor drive unit, a second device for determining a target current based upon at least a signal of steering torque, a third device for detection of a motor current, and a control unit for generating a signal for motor drive based upon at least a deviation between the target current and motor current and transmitting the signal for motor drive to the motor drive unit. The apparatus has a feature that the control unit includes a fourth device for weakening a magnetic field within the motor according to the deviation or a value computed based upon the deviation.

    摘要翻译: 本发明提供一种电动助力转向装置,其具有用于检测转向转矩的第一装置,电动机,电动机驱动单元,至少基于转向转矩的信号确定目标电流的第二装置,第三检测装置 以及控制单元,用于基于至少目标电流和电动机电流之间的偏差产生用于电动机驱动的信号,并将用于电动机驱动的信号传送到电动机驱动单元。 该装置的特征在于,控制单元包括用于根据偏差或基于偏差计算的值来削弱电动机内的磁场的第四装置。

    Electric power steering apparatus
    5.
    发明申请
    Electric power steering apparatus 有权
    电动助力转向装置

    公开(公告)号:US20050045414A1

    公开(公告)日:2005-03-03

    申请号:US10439606

    申请日:2003-05-16

    摘要: An electric power steering apparatus is provided, which has a first device for detection of steering torque, a motor, a motor drive unit, a second device for determining a target current based upon at least a signal of steering torque, a third device for detection of a motor current, and a control unit for generating a signal for motor drive based upon at least a deviation between the target current and motor current and transmitting the signal for motor drive to the motor drive unit. The apparatus has a feature that the control unit includes a fourth device for weakening a magnetic field within the motor according to the deviation or a value computed based upon the deviation.

    摘要翻译: 本发明提供一种电动助力转向装置,其具有用于检测转向转矩的第一装置,电动机,电动机驱动单元,至少基于转向转矩的信号确定目标电流的第二装置,第三检测装置 以及控制单元,用于基于至少目标电流和电动机电流之间的偏差产生用于电动机驱动的信号,并将用于电动机驱动的信号传送到电动机驱动单元。 该装置的特征在于,控制单元包括用于根据偏差或基于偏差计算的值来削弱电动机内的磁场的第四装置。

    Driving force distribution device for vehicle
    6.
    发明授权
    Driving force distribution device for vehicle 失效
    车辆驱动力分配装置

    公开(公告)号:US06543595B2

    公开(公告)日:2003-04-08

    申请号:US09818974

    申请日:2001-03-27

    IPC分类号: F16D1900

    CPC分类号: F16D27/14 B60K23/04 F16H48/30

    摘要: A driving force distribution device which controls the engagement forces of electromagnetic clutches and which govern the torque distribution between the driving wheels of a vehicle by calculating a target magnetic flux density and converting the same into a target excitation current. Since the relationship between the target magnetic flux density and the target excitation current changes according to a decrease in the air gaps accompanying wear of the frictional engagement members of the electromagnetic clutches, a relationship between the magnetic flux density and the excitation current is determined by applying current to the electromagnetic clutches when torque distribution control is not being carried out such as when the system is started, and the target excitation current is calculated from the target magnetic flux density based on the determined relationship. Since there is no need to detect dynamic changes in the magnetic flux density, inexpensive devices can be used as magnetic flux density detecting means so contributing to a reduction in the cost.

    摘要翻译: 一种驱动力分配装置,其通过计算目标磁通密度并将其转换为目标励磁电流来控制电磁离合器的接合力并且控制车辆的驱动轮之间的转矩分布。 由于目标磁通密度和目标激励电流之间的关系随着伴随电磁离合器的摩擦接合构件的磨损的气隙的减小而变化,所以磁通密度和激励电流之间的关系通过应用 基于所确定的关系,根据目标磁通密度计算当系统启动时不进行转矩分配控制时的电磁离合器的电流。 由于不需要检测磁通密度的动态变化,所以可以使用便宜的装置作为磁通密度检测装置,从而有助于降低成本。

    Co-operative control system for a vehicle
    9.
    发明授权
    Co-operative control system for a vehicle 失效
    车辆合作控制系统

    公开(公告)号:US06295496B1

    公开(公告)日:2001-09-25

    申请号:US09654272

    申请日:2000-09-01

    IPC分类号: G06F1520

    摘要: A co-operative control system for a vehicle having a force distribution device for distributing at least one of a driving force and a braking force between spaced apart wheels, the co-operative system having: a first control mechanism for controlling the operation of the force distribution device, an electric power steering device having a motor for applying a steering assist torque to a steering system of the vehicle, and a second control mechanism for calculating a motor control signal for driving the motor based on at least a steering torque detected by a steering torque sensor, and for inhibiting drive of the motor based on at least an actual motor detected by a current sensor and the steering torque. The first control mechanism calculates a correction signal for correcting the motor control signal based on the amount of control of the force distribution device and an offset current for correcting the actual motor current signal; and the second control mechanism drives the motor based on a corrected motor control signal obtained by correcting the motor control signal with the correction signal and inhibits the drive of the motor based on a value obtained by correcting the actual motor current signal with the offset current and the steering torque signal, the offset current being set smaller than the correction signal.

    摘要翻译: 一种用于车辆的合作控制系统,具有用于在间隔开的车轮之间分配驱动力和制动力中的至少一个的力分配装置,所述协作系统具有:用于控制力的操作的第一控制机构 分配装置,具有用于向车辆的转向系统施加转向辅助转矩的电动机的电动助力转向装置,以及至少基于由所述车辆的转向检测到的转向转矩来计算用于驱动所述电动机的电动机控制信号的第二控制机构 转向扭矩传感器,并且用于基于至少由电流传感器检测到的实际电动机和转向转矩来禁止电动机的驱动。 第一控制机构基于力分配装置的控制量和用于校正实际电动机电流信号的偏移电流来计算用于校正电动机控制信号的校正信号; 并且第二控制机构基于通过利用校正信号校正电动机控制信号而获得的校正电动机控制信号来驱动电动机,并且基于通过利用偏移电流校正实际电动机电流信号而获得的值来禁止电动机的驱动,以及 转向转矩信号,偏移电流被设定为小于校正信号。

    Electric steering actuator
    10.
    发明授权
    Electric steering actuator 失效
    电动转向执行器

    公开(公告)号:US5988311A

    公开(公告)日:1999-11-23

    申请号:US641373

    申请日:1996-04-30

    IPC分类号: B62D5/04 B62D7/14 H02K7/06

    CPC分类号: B62D5/0448 B62D5/0427

    摘要: In an electric steering actuator comprising an electric motor having a hollow output shaft, a steering shaft passed through the hollow center of the output shaft of the electric motor, and a ball-screw mechanism provided between the output shaft and the steering shaft for converting the rotary movement of the output shaft into a longitudinal movement of the steering shaft. The ball-screw mechanism comprises a threaded section of the steering shaft, and a nut member which threadably engages with the threaded section of the steering shaft via steel balls, and is secured to the output shaft of the electric motor via a serration coupling or the like which achieves an axially free but rotatively fast coupling between the two parts. Thus, the overall axial dimension of the actuator can be reduced, and the step of joining these two parts is significantly simplified in terms of both effort and time while the number of component parts is also reduced. In particular, by installing the ball-screw mechanism in the first casing section in an axially immobile manner, removal of the rotor or the motor assembly is substantially simplified, thereby making the actuator easier to manufacture and service. Also, the motor can be interchanged without affecting the ball-screw mechanism.

    摘要翻译: 在包括具有中空输出轴的电动机的电动转向致动器中,转向轴穿过电动机的输出轴的中空中心,以及设置在输出轴和转向轴之间的滚珠丝杠机构,用于将 输出轴的旋转运动转向转向轴的纵向运动。 滚珠丝杠机构包括转向轴的螺纹部分和螺母构件,螺母构件通过钢球与转向轴的螺纹部分螺纹接合,并通过锯齿联轴器或电动马达固定到电动机的输出轴上 其实现了两个部件之间的轴向自由但是可旋转地快速的联接。 因此,能够减少致动器的总体轴向尺寸,并且在部件数量也减少的同时,在努力和时间方面都显着简化了连接这两个部件的步骤。 特别地,通过将​​滚珠丝杠机构以轴向固定的方式安装在第一壳体部分中,大大简化了转子或马达组件的拆卸,从而使致动器更容易制造和使用。 此外,马达可以互换而不影响滚珠丝杆机构。