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    • 93. 发明授权
    • Stepping motor control apparatus
    • 步进电机控制装置
    • US4496891A
    • 1985-01-29
    • US517460
    • 1983-07-26
    • Makoto Kobayashi
    • Makoto Kobayashi
    • H02P8/00H02P8/14H02K29/04
    • H02P8/14
    • A frequency of a power supply applied to a stepping motor changes in accordance with a predetermined program to control the stepping motor such that a predetermined rotational speed of the motor is quickly obtained without generating noise. The power supply frequency is abruptly and linearly increased or decreased within an initial predetermined time interval. A high accelerating or decelerating torque is applied to the stepping motor to obtain a first rotational speed for a short period of time. Thereafter, the power supply frequency is exponentially decreased or increased within a final predetermined time interval to obtain a second rotational speed at which the noise level is low.
    • 施加到步进电动机的电源的频率根据预定程序而改变,以控制步进电动机,从而快速获得电动机的预定转速而不产生噪声。 电源频率在初始预定时间间隔内突然和线性地增加或减少。 对步进电机施加高加速或减速转矩,以在短时间内获得第一转速。 此后,电源频率在最终预定时间间隔内以指数方式减小或增加,以获得噪声电平较低的第二转速。
    • 98. 发明授权
    • Vehicle automatic transmission
    • 车辆自动变速器
    • US08249783B2
    • 2012-08-21
    • US12842035
    • 2010-07-23
    • Tatsuya IshikawaJoko KarasawaMakoto KobayashiYuji Koga
    • Tatsuya IshikawaJoko KarasawaMakoto KobayashiYuji Koga
    • G06F7/00B60W10/04B60W10/10
    • F16H61/0246F16H3/093F16H2003/0938F16H2061/047F16H2200/0052Y10T477/60Y10T477/675Y10T477/688
    • A vehicle automatic transmission includes a plurality of gears provided on an input shaft, a countershaft, and an output shaft and are meshed with one another. A plurality of hydraulic clutches are each configured to couple any of the gears to the input shaft, the countershaft, or the output shaft to establish a predetermined shift stage. An engagement unit is configured to couple a reverse gear to the input shaft or the countershaft to establish a reverse shift stage. A shift-position detection unit is configured to detect a shift position. A vehicle-speed detection unit is configured to detect a vehicle speed. A control unit is configured to detect, based on an output of the shift-position detection unit, a first time and a second time. The control unit is configured to delay a timing when the engagement unit operates after the shift position changes to an R-position.
    • 车辆自动变速器包括设置在输入轴,中间轴和输出轴上并且彼此啮合的多个齿轮。 多个液压离合器分别构造成将任何齿轮连接到输入轴,中间轴或输出轴,以建立预定的换档阶段。 接合单元构造成将倒档齿轮连接到输入轴或中间轴,以建立倒档阶段。 换档位置检测单元被配置为检测换档位置。 车速检测单元被配置为检测车速。 控制单元被配置为基于换档位置检测单元的输出来检测第一时间和第二时间。 控制单元被配置为在移位位置改变为R位置之后延迟接合单元操作的定时。