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    • 72. 发明申请
    • Switching regulator
    • 开关稳压器
    • US20070035281A1
    • 2007-02-15
    • US11488833
    • 2006-07-19
    • Hiroshi KuroiwaYasuhiko KokamiOsamu Yamashita
    • Hiroshi KuroiwaYasuhiko KokamiOsamu Yamashita
    • G05F1/00
    • H02M3/156H02M2001/0022
    • The present invention provides a switching regulator having good stability compatible with a good response and an enhanced protection function. A first capacitor is placed between an output end of an inductor to generate an output voltage and a ground potential. From input voltage, a current is supplied to the inductor's input end by a first switch element. A first feedback path includes a hysteretic comparator. An output voltage added to a voltage proportional to the current flowing through the inductor is supplied to the hysteretic comparator which discriminates whether the voltage is appropriate by hysteresis characteristics and generates a PWM control signal in accordance with an output current variation. Moreover, a second feedback path is provided to feed back an error amplifier output voltage with greater gain in a low frequency domain and an attenuation loop around a PWM frequency band to the comparator's reference voltage input terminal. Feedback voltage through the second feedback path is used as a monitoring voltage in a protection circuit.
    • 本发明提供了具有良好稳定性的开关调节器,其具有良好的响应和增强的保护功能。 电感器的输出端之间放置第一电容器以产生输出电压和接地电位。 从输入电压,通过第一开关元件将电流提供给电感器的输入端。 第一反馈路径包括滞后比较器。 加到与流过电感器的电流成比例的电压的输出电压被提供给迟滞比较器,其通过滞后特性来鉴别电压是否合适,并根据输出电流变化产生PWM控制信号。 此外,提供第二反馈路径以将低频域中具有较大增益的误差放大器输出电压和围绕PWM频带的衰减环路反馈到比较器的参考电压输入端子。 通过第二反馈路径的反馈电压被用作保护电路中的监视电压。
    • 74. 发明授权
    • Magnetic disk storage apparatus
    • 磁盘存储装置
    • US06757129B2
    • 2004-06-29
    • US10081536
    • 2002-02-25
    • Hiroshi KuroiwaYasuhiko Kokami
    • Hiroshi KuroiwaYasuhiko Kokami
    • G11B5596
    • G11B5/5526G11B5/5547G11B21/083
    • In a magnetic disk storage apparatus, when a drive current of the voice coil motor is small, the head drive control circuit executes the linear drive mode under which the voice coil motor is driven in a linear control manner, whereas when the drive current is large, the head drive control circuit executes the pulse drive mode under which the voice coil motor is driven in a pulse width control manner. Both modes are carried out by employing a commonly-used output amplifier that is arranged as a push-pull type output circuit made of both a push-driving output transistor and a pull-driving output transistor. An operation mode of this output amplifier is set to an AB-class operation during the linear drive mode, whereas the operation mode of this output amplifier is set to a B-class operation during the pulse drive mode.
    • 在磁盘存储装置中,当音圈电动机的驱动电流小时,磁头驱动控制电路以线性控制方式执行线圈电动机驱动的线性驱动模式,而当驱动电流大时 磁头驱动控制电路以脉冲宽度控制方式执行音圈电动机驱动的脉冲驱动模式。 这两种模式通过采用被布置为由推驱动输出晶体管和拉动驱动输出晶体管构成的推挽型输出电路的常用输出放大器来进行。 该输出放大器的工作模式在线性驱动模式期间被设置为AB级操作,而在脉冲驱动模式期间该输出放大器的操作模式被设置为B级操作。
    • 79. 发明授权
    • Air flow meter
    • 空气流量计
    • US4478075A
    • 1984-10-23
    • US449617
    • 1982-12-14
    • Yoshishige OyamaHiroshi KuroiwaYutaka Nishimura
    • Yoshishige OyamaHiroshi KuroiwaYutaka Nishimura
    • G01F1/68F02B75/02G01F1/684G01F1/72G01F5/00G01F1/22
    • G01F1/72G01F1/6842G01F5/00F02B2075/027
    • A part of the air flowing through a main passage flows into a by-pass passage. A flow rate detector is provided in the by-pass passage. An outlet of the by-pass passage is opened at the narrowest portion of a venturi structure provided in the main passage. The by-pass passage is in communication with a pressure-accumulating chamber, which is in communication with the main passage at the portion thereof which is on the downstream side of the venturi structure. The pressure of the air flowing backward from the engine is stored in the pressure-accumulating chamber. The pressure in the pressure-accumulating chamber serves as a passage resistance with respect to the flow of the air in the by-pass passage. Accordingly, the flow rate detector permits determining the flow rate of the air, which does not contain a component representative of a backward flow of the air.
    • 流过主通道的空气的一部分流入旁路通道。 在旁路通道中设置有流量检测器。 旁通通道的出口在设置在主通道中的文丘里结构的最窄部分处开口。 旁路通道与在文丘里结构的下游侧的部分与主通道连通的压力积聚室连通。 从发动机向后流动的空气的压力被储存在蓄压室中。 蓄压室中的压力相对于旁通通路中的空气流动成为通道阻力。 因此,流量检测器允许确定不包含表示空气的逆流的部件的空气的流量。
    • 80. 发明授权
    • Air flow rate measuring device incorporating hot wire type air flow meter
    • 含热丝式空气流量计的空气流量测量装置
    • US4404846A
    • 1983-09-20
    • US302435
    • 1981-09-09
    • Teruo YamauchiYoshishige OhyamaHiroshi KuroiwaMamoru FujiedaTadashi Kirisawa
    • Teruo YamauchiYoshishige OhyamaHiroshi KuroiwaMamoru FujiedaTadashi Kirisawa
    • F02D41/18F02D45/00G01F1/00G01F1/68G01F1/684G01F1/696G01F1/72
    • G01F1/6842G01F1/72
    • The invention relates to an air flow rate measuring device making use of a hot wire type air flow meter and adapted to measure the true intake air flow rate while compensating for the error attributable to the reversing of the air. The device includes an operation unit adapted to accumulate the output from the hot wire type air flow meter to calculate an apparent intake air flow rate Q.sub.a =Q.sub.1 +Q.sub.2, where Q.sub.1 is the flow rate during reversing of the air while Q.sub.2 represents the flow rate during forward flowing of the air. The apparent flow rate Q.sub.a is discriminated by a signal derived from means for detecting the period in which the reversing of intake air takes place into the flow rate Q.sub.1 in the reversing or backward direction and the flow rate Q.sub.1 in the forward direction, by means of the operation unit. Another operation unit performs the calculation of difference Q.sub.2 -Q.sub.1 to determine the true air flow rate Q.sub.o.
    • PCT No.PCT / JP81 / 00018 Sec。 371日期1981年9月9日 102(e)1981年9月9日PCT PCT。 出版物WO81 / 02202 日本1981年8月6日。本发明涉及一种使用热丝式空气流量计的空气流量测量装置,其适于在补偿由空气反转引起的误差的同时测量真实的进气流量。 该装置包括适于积累来自热丝式空气流量计的输出的操作单元,以计算表观进气流量Qa = Q1 + Q2,其中Q1是空气反向期间的流量,而Q2表示流量 在向前流动的空气中。 表观流量Qa由来自用于检测进入空气的反转时间的装置的反馈或反向方向的流量Q1和向前方向上的流量Q1的信号借助于 操作单元。 另一个操作单元执行差分Q2-Q1的计算,以确定真空气流量Qo。