Ceramic honeycomb structure
    1.
    发明授权
    Ceramic honeycomb structure 有权
    陶瓷蜂窝结构

    公开(公告)号:US06696131B1

    公开(公告)日:2004-02-24

    申请号:US09612278

    申请日:2000-07-07

    IPC分类号: B32B312

    摘要: There is provided a ceramic honeycomb structure with excellent thermal shock resistance. The ceramic honeycomb structure (1) comprises partitions (10) arranged in a lattice forming a plurality of cells (19) and an outer shell (15) surrounding the perimeter of the partitions (10), and the outer shell (15) is provided with slits (2) formed by cutting the outer shell (15) in the lengthwise direction along its entire length.

    摘要翻译: 提供了具有优异耐热冲击性的陶瓷蜂窝结构体。 陶瓷蜂窝结构体(1)包括以格状布置的格子形成多个单元(19)的隔壁(10)和围绕隔板(10)的周边的外壳(15),外壳(15) 具有通过沿其整个长度沿长度方向切割外壳(15)而形成的狭缝(2)。

    Positional change measurement device, positional change measurement method, and image forming apparatus
    2.
    发明授权
    Positional change measurement device, positional change measurement method, and image forming apparatus 有权
    位置变化测量装置,位置变化测量方法和图像形成装置

    公开(公告)号:US09228825B2

    公开(公告)日:2016-01-05

    申请号:US14208621

    申请日:2014-03-13

    IPC分类号: G01B11/14 G01B11/04 G03G15/00

    摘要: An objective is to achieve a positional change measurement device which measures positional change of a dynamic measured surface by using speckle patterns while easily reducing influence of fluctuations in a measurement environment temperature. Provided is a positional change measurement device including: a light source; an illuminating optical system configured to guide light from the light source to a measured surface; an imaging optical system; an image pickup device configured to acquire a speckle pattern by receiving reflection light from the measured surface via the imaging optical system; and detected-length compensation means for compensating for fluctuations in a detected length caused by temperature fluctuations. Positional change of the measured surface is measured based on a result of cross-correlation computation performed on multiple speckle patterns acquired at predetermined time intervals.

    摘要翻译: 目的是实现利用散斑图案来测量动态测量表面的位置变化同时容易地减少测量环境温度波动的影响的位置变化测量装置。 提供一种位置变化测量装置,包括:光源; 照明光学系统,被配置为将来自所述光源的光引导到测量的表面; 成像光学系统; 被配置为通过经由所述成像光学系统从测量的表面接收反射光来获取散斑图案的图像拾取装置; 以及用于补偿由温度波动引起的检测长度的波动的检测长度补偿装置。 基于在以预定时间间隔获取的多个散斑图案上执行的互相关计算的结果来测量测量表面的位置变化。

    Rotation angle detection device
    3.
    发明授权
    Rotation angle detection device 有权
    旋转角度检测装置

    公开(公告)号:US09121729B2

    公开(公告)日:2015-09-01

    申请号:US13326701

    申请日:2011-12-15

    申请人: Takeshi Ueda

    发明人: Takeshi Ueda

    IPC分类号: G01B7/30 G01D5/244 G01D5/347

    摘要: A rotation angle calculation unit includes a first rotation angle calculation portion, a second rotation angle calculation portion, a third rotation angle calculation portion, an abnormality monitoring portion, and a final rotation angle calculation portion. The abnormality monitoring portion determines, based on a first output signal, a second output signal, and a third output signal, whether the first to third output signals are each normal or abnormal. The final rotation angle calculation portion calculates a final rotation angle based on the final determination result obtained by the abnormality monitoring portion and the first to third rotation angles calculated by the first to third rotation angle calculation portions, respectively.

    摘要翻译: 旋转角度计算单元包括第一旋转角度计算部分,第二旋转角度计算部分,第三旋转角度计算部分,异常监视部分和最终旋转角度计算部分。 异常监视部分基于第一输出信号确定第二输出信号和第三输出信号,第一至第三输出信号是否正常或异常。 最终旋转角度计算部分基于由异常监视部分获得的最终确定结果和由第一至第三旋转角度计算部分计算的第一至第三旋转角度分别计算最终旋转角度。

    Case structure and imaging device
    4.
    发明授权
    Case structure and imaging device 有权
    案例结构和成像设备

    公开(公告)号:US08801303B2

    公开(公告)日:2014-08-12

    申请号:US13537052

    申请日:2012-06-29

    申请人: Takeshi Ueda

    发明人: Takeshi Ueda

    摘要: Herein describes, by example, a case structure that includes a first cover, a second cover and a first side frame. The second cover opposes the first cover. An internal space is formed between the first cover and the second cover. The first side frame is arranged between the first cover and the second cover. The first side frame has a reinforcing part and a strap holder part. The reinforcing part is arranged along each of a first side end part of the first cover and a second side end part of the second cover. The reinforcing part is connected to each of the first side end part and the second side end part. The strap holder part connects to an end part of the reinforcing part. The strap holder part is folded in an outward direction from the internal space.

    摘要翻译: 这里通过示例描述包括第一盖,第二盖和第一侧框架的壳体结构。 第二个盖子反对第一个封面。 在第一盖和第二盖之间形成内部空间。 第一侧框架布置在第一盖和第二盖之间。 第一侧框具有加强部和带固定部。 加强部沿着第一盖的第一侧端部和第二盖的第二侧端部配置。 加强部分连接到第一侧端部和第二侧端部中的每一个。 带支架部分连接到加强部件的端部。 带保持器部分从内部空间向外的方向折叠。

    Rotation angle detecting device
    5.
    发明授权
    Rotation angle detecting device 有权
    旋转角度检测装置

    公开(公告)号:US08587296B2

    公开(公告)日:2013-11-19

    申请号:US13336206

    申请日:2011-12-23

    申请人: Takeshi Ueda

    发明人: Takeshi Ueda

    IPC分类号: G01B7/30

    CPC分类号: G01D5/145

    摘要: Three magnetic sensors are arranged around a rotor at predetermined angular intervals about the rotation axis of the rotor. Sinusoidal signals having a phase difference of 120° are output from the magnetic sensors. A rotation angle computing device detects a magnetic pole transition in a first output signal as follows. The rotation angle computing device detects a magnetic pole transition in the first output signal based on a current value of one of the second and third sinusoidal signals, an absolute value of a difference between an immediately preceding value and the current value of the one of the second and third sinusoidal signals being larger than an absolute value of a difference between an immediately preceding value and the current value of the other of the second and third sinusoidal signals, an immediately preceding value of the first sinusoidal signal and a current value of the first sinusoidal signal.

    摘要翻译: 围绕转子的旋转轴线以预定的角度间隔围绕转子设置三个磁性传感器。 从磁传感器输出相位差为120°的正弦信号。 旋转角度计算装置如下检测第一输出信号中的磁极转变。 旋转角度计算装置基于第二和第三正弦信号中的一个的当前值,检测第一输出信号中的磁极转变,其中前一个值之间的差和当前值之间的差的绝对值 第二和第三正弦信号大于紧接在前的值与第二和第三正弦信号中的另一个的当前值之间的差的绝对值,第一正弦信号的先前值和第一正弦信号的当前值 正弦信号。

    Electric power steering apparatus
    6.
    发明授权
    Electric power steering apparatus 有权
    电动助力转向装置

    公开(公告)号:US08037964B2

    公开(公告)日:2011-10-18

    申请号:US12445743

    申请日:2007-10-15

    IPC分类号: B62D5/04

    摘要: When stopping operation of an electric power steering apparatus, a motor relay is kept in an on-state even after a power supply relay is in an off-state. A drive control portion sets a target value of a d-axis current to a value other than zero and sets a target value of a q-axis current to zero, and performs a processing same as that at the time of rotating a motor. MOS-FETs contained in a motor driving circuit are controlled such that each of driving currents of the two phases or more is not zero and the brushless motor does not rotate even supplied with these driving currents. Electric charge accumulated in a capacitor is discharged via the MOS-FETs each in an on-state, a motor relay and the windings of the brushless motor. The electric charge accumulated in the capacitor may be discharged via the excitation coil of the motor relay.

    摘要翻译: 在停止电动转向装置的动作时,即使电源继电器处于关闭状态,电动机继电器也保持接通状态。 驱动控制部将d轴电流的目标值设定为零以外的值,将q轴电流的目标值设定为零,并进行与电动机旋转时相同的处理。 控制电动机驱动电路中包含的MOS-FET,使得两相或更多相的驱动电流不为零,并且无刷电动机即使被这些驱动电流提供也不旋转。 电容器中累积的电荷通过MOS-FET各自在导通状态,电动机继电器和无刷电动机的绕组中放电。 蓄积在电容器中的电荷可以通过电动机继电器的励磁线圈放电。

    MOTOR CONTROLLER AND ELECTRONIC POWER STEERING APPARATUS
    7.
    发明申请
    MOTOR CONTROLLER AND ELECTRONIC POWER STEERING APPARATUS 有权
    电机控制器和电子转向装置

    公开(公告)号:US20110025238A1

    公开(公告)日:2011-02-03

    申请号:US12935774

    申请日:2009-03-30

    IPC分类号: H02P21/00

    摘要: A command current setting portion has a target value corrector that calculates d-axis and q-axis current command values idc, iqc that are to be supplied to an open-loop controller, based on d-axis and q-axis current target values id*, iq*. When d-axis and q-axis voltage target value vd*, vq* calculated from the d-axis and q-axis current target values id*, iq* by the motor circuit equations exceed a voltage limit, this target value corrector 26 corrects the d-axis and q-axis current target values id*, iq* by the field weakening control such that d-axis and q-axis voltages vd, vq and d-axis and q-axis currents id, iq satisfy √(vd2+vq2)≦Vlim and √(id2+iq2)≦Ilim respectively. The d-axis and q-axis current command values idc, iqc are obtained by this correction.

    摘要翻译: 指令电流设定部具有基于d轴和q轴电流目标值id来计算要提供给开环控制器的d轴和q轴电流指令值idc,iqc的目标值校正部 *,iq *。 当通过电动机电路方程从d轴和q轴电流目标值id *,iq *计算的d轴和q轴电压目标值vd *,vq *超过电压限制时,该目标值校正器26校正 通过弱磁控制使d轴和q轴电流目标值id *,iq *使得d轴和q轴电压vd,vq和d轴和q轴电流id,iq满足√(vd2 + vq2)≦̸ Vlim和√(id2 + iq2)≦̸ Ilim。 通过该校正获得d轴和q轴电流指令值idc,iqc。

    MOTOR CONTROLLER AND ELECTRIC POWER STEERING SYSTEM
    9.
    发明申请
    MOTOR CONTROLLER AND ELECTRIC POWER STEERING SYSTEM 有权
    电机控制器和电力转向系统

    公开(公告)号:US20090079373A1

    公开(公告)日:2009-03-26

    申请号:US12236059

    申请日:2008-09-23

    IPC分类号: H02H7/085 H02P6/08

    摘要: A current sensor of a motor controller detects the current applied to a motor drive circuit and thus a phase where a failure cannot be detected would occur without taking any measures. However, an abnormal current monitor section contained in a microcomputer receives a voltage signal of an average value of the currents detected in the current sensor by allowing a signal to pass through a first LPF having a cutoff frequency sufficiently lower than the frequency of a PWM signal. Therefore, whether or not the value is within a predetermined normal range is checked, whereby whether or not some failure containing a failure of the current sensor occurs can be easily determined about every phase.

    摘要翻译: 电动机控制器的电流传感器检测施加到电动机驱动电路的电流,因此在不采取任何措施的情况下将发生不能检测到故障的阶段。 然而,包含在微计算机中的异常电流监视部分通过允许信号通过具有足够低于PWM信号的频率的截止频率的第一LPF来接收在当前传感器中检测到的电流的平均值的电压信号 。 因此,检查该值是否在预定的正常范围内,因此可以容易地确定每个相位是否确定包含电流传感器的故障的一些故障是否发生。

    Electric power steering system
    10.
    发明授权
    Electric power steering system 有权
    电动助力转向系统

    公开(公告)号:US07474067B2

    公开(公告)日:2009-01-06

    申请号:US10574809

    申请日:2004-10-05

    IPC分类号: H02P7/00

    CPC分类号: H02P21/05 B62D5/0472

    摘要: There are provided a high-order current distortion compensator which uses rotational position information on an electric motor and a target current value of the electric motor for deciding a compensation value for current high-order-component for canceling torque ripple caused by predetermined high-order components of a current flowing through the motor, and a correction portion which corrects the target current value by using the compensation value supplied from the high-order current distortion compensator. A feedback controller provides feedback control of the electric motor based on the target current value corrected by the correction portion. Thus is suppressed the torque ripple caused by the predetermined high-order components, whereby the degradation of steering feeling is reduced.

    摘要翻译: 提供了一种高阶电流失真补偿器,其使用电动机上的旋转位置信息和电动机的目标电流值来确定用于消除由预定高阶引起的转矩波动的当前高阶分量的补偿值 流过马达的电流的分量,以及通过使用从高阶电流失真补偿器提供的补偿值来校正目标电流值的校正部分。 反馈控制器基于由校正部分校正的目标电流值提供电动机的反馈控制。 从而抑制由预定的高阶分量引起的转矩波动,从而降低转向感的劣化。