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    • 6. 发明授权
    • Control device and control method for alternating-current motor
    • 交流电机控制装置及控制方法
    • US08536810B2
    • 2013-09-17
    • US13055610
    • 2009-07-08
    • Kenji Yamada
    • Kenji Yamada
    • H02P6/08
    • H02P27/04
    • When performing PWM control in accordance with an overmodulation mode, an ECU variably sets a switching determination value, which is used for determination of switching control modes between the overmodulation mode and a sinusoidal wave modulation mode, based on a switching state of an inverter at present. Then, the ECU compares the degree of modulation, which is calculated from voltage command values, with the switching determination value so as to determine whether to switch to the sinusoidal wave modulation mode or to maintain the overmodulation mode. In particular, when an influence of a dead time is likely to cause generation of a voltage command that requires switching to the overmodulation mode just after switching to the sinusoidal wave modulation mode, the switching determination value is variably set to prevent the transition from the overmodulation mode to the sinusoidal wave modulation mode. This prevents chattering in which the control modes are frequently switched therebetween.
    • 当根据过调制模式执行PWM控制时,ECU基于目前的逆变器的开关状态可变地设置用于确定过调制模式和正弦波调制模式之间的开关控制模式的开关判定值 。 然后,ECU将根据电压指令值计算的调制度与切换判定值进行比较,以便确定是切换到正弦波调制模式还是维持过调制模式。 特别地,当切换到正弦波调制模式之后,当死区时间的影响可能导致产生需要切换到过调制模式的电压指令时,切换判定值被可变地设置以防止过调制 模式到正弦波调制模式。 这防止其间经常切换控制模式的抖动。
    • 8. 发明授权
    • Wireless terminal and wireless communication method
    • 无线终端和无线通信方式
    • US08270379B2
    • 2012-09-18
    • US11802820
    • 2007-05-25
    • Takayuki OkamasuKenji Yamada
    • Takayuki OkamasuKenji Yamada
    • H04W4/00
    • H04W88/04H04L1/1657H04L1/1867H04L45/20H04L2001/0092H04W84/18
    • A wireless terminal and wireless communication method that can improve data transfer efficiency and reduce traffic. A frame transmitter of a wireless terminal transmits a frame by wireless. A wireless terminal receives the frame transmitted from the frame transmitter and transmits the received frame by wireless to a wireless terminal. A frame receiver receives the frame transmitted from the succeeding wireless terminal to the wireless terminal. When the frame is received by the frame receiver, a frame reception recognizer recognizes that the frame has been received by the succeeding wireless terminal. It is therefore unnecessary for the wireless terminal to receive, from the succeeding wireless terminal, a frame indicative of reception of the frame, so that the data transfer efficiency improves and the traffic reduces.
    • 一种可以提高数据传输效率和减少流量的无线终端和无线通信方法。 无线终端的帧发送器通过无线发送帧。 无线终端接收从帧发送机发送的帧,并通过无线将接收到的帧发送到无线终端。 帧接收器接收从后续无线终端发送到无线终端的帧。 当帧由帧接收器接收时,帧接收识别器识别出该帧已被接下来的无线终端接收。 因此,无线终端不需要从后续的无线终端接收指示帧的接收的帧,从而提高数据传输效率并减少流量。
    • 9. 发明授权
    • Power converter
    • 电源转换器
    • US08258739B2
    • 2012-09-04
    • US13337155
    • 2011-12-26
    • Tsuyoshi HiguchiKenji Yamada
    • Tsuyoshi HiguchiKenji Yamada
    • H02P23/00
    • H02M1/126H02M2001/123H02P27/08
    • A power converter includes: a determination section which, prior to an actual operation, determines presence/absence of a common mode filter connected to a line for supplying power to a motor, switching elements being driven with a predetermined PWM on/off drive signal corresponding to a carrier frequency prior to the actual operation; and a PWM control method changing/setting section which, during the actual operation, changes and sets a PWM control method in accordance with a result of the determination of the presence/absence of the common mode filter.
    • 电力转换器包括:确定部分,其在实际操作之前确定连接到用于向电动机供电的线路的共模滤波器的存在/不存在,用预定的PWM开/关驱动信号驱动的开关元件对应 到实际操作之前的载波频率; 以及PWM控制方法变更/设定部,其在实际动作中根据所述共模滤波器的存在/不存在的结果而改变并设定PWM控制方法。
    • 10. 发明授权
    • In-vehicle apparatus
    • 车内装置
    • US08254594B2
    • 2012-08-28
    • US11717036
    • 2007-03-13
    • Kenji YamadaTakehiko Tanaka
    • Kenji YamadaTakehiko Tanaka
    • H04R25/00
    • H04B1/082
    • Disclosed herein is an in-vehicle apparatus having an apparatus body, a loading slot formed on the front surface of the apparatus body, a front panel arranged in front of the apparatus body, and a drive mechanism for operatively connecting the front panel to the apparatus body so as to move the front panel. The front panel is movable by the drive mechanism to a normal position where the front panel is arranged in parallel to the front surface of the apparatus body, a left projected position where a left side portion of the front panel is projected frontward, a right projected position where a right side portion of the apparatus body is projected frontward, and an open position where the front panel is inclined frontward so as to open a loading slot formed on the front surface of the apparatus body for loading a recording medium.
    • 本文公开了一种车载设备,其具有装置主体,形成在设备主体的前表面上的装载槽,布置在设备主体前面的前面板,以及用于将前面板可操作地连接到设备的驱动机构 身体,以便移动前面板。 前面板可以通过驱动机构移动到前面板平行于装置主体的前表面的正常位置,前面板的左侧部分向前突出的左突出位置,右投影 位于其中装置主体的右侧部分向前突出的位置,以及前面板向前倾斜的打开位置,以便打开形成在装置主体的前表面上的装载槽,用于装载记录介质。