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    • 85. 发明授权
    • Objective lens driving unit
    • 物镜驱动单元
    • US4842392A
    • 1989-06-27
    • US52922
    • 1987-05-22
    • Hiroyuki NakamuraMasashi ItoToshiki ItoiAkifumi Hashimoto
    • Hiroyuki NakamuraMasashi ItoToshiki ItoiAkifumi Hashimoto
    • G11B7/09
    • G11B7/093
    • In an objective lens driving unit, an objective lens (12) is fixed to a coil bobbin (11), which has a focus drive coil (13a) wound therearound with its axis coaxial with the axis of the objective lens (12) and tracking dive coils (13b, 13c) wound thereon with their axes perpendicular with the axis of the objective lens (12), and the focus drive coil (13a) and the tracking drive coils (13b, 13c) are put in an open magnetic field produced by a magnetic yoke (14) having permanent magnets (15a, 15b), which makes magnetic flux to cross the coils, thereby to drive the objective lens (12); thus the size of the unit is decreased and made light, and further, the weight of the moving part is made light, to boost sensitivity thereby.
    • 在物镜驱动单元中,物镜(12)被固定到线圈架(11)上,线圈架(11)具有绕其轴线与物镜(12)的轴线同轴的聚焦驱动线圈(13a),并且跟踪 卷绕在其上的潜线圈(13b,13c)的轴线与物镜(12)的轴线垂直,并且聚焦驱动线圈(13a)和跟踪驱动线圈(13b,13c)被置于产生的开放磁场中 通过具有永磁体(15a,15b)的磁轭(14)使磁通量与线圈交叉,从而驱动物镜(12); 因此单元的尺寸减小并变轻,并且进一步使移动部件的重量变轻,从而提高灵敏度。
    • 87. 发明授权
    • Engine speed control system
    • 发动机转速控制系统
    • US4475503A
    • 1984-10-09
    • US331769
    • 1981-12-17
    • Hiroyuki NakamuraYoshiaki KasaiMasaaki Ohgami
    • Hiroyuki NakamuraYoshiaki KasaiMasaaki Ohgami
    • F02D41/16F02D31/00F02M3/00
    • F02D31/004
    • An engine idling speed control system for an internal combustion engine comprising an actuator for actuating a throttle valve for increasing and decreasing the idling speed, an engine speed signal generating circuit, an engine speed increasing signal generating circuit and an engine speed decreasing signal generating circuit, a vehicle speed detecting circuit for generating a signal when the vehicle speed is lower than a predetermined value, an idling signal generating circuit for generating an idling signal in the idling operation of the engine, an engine speed detecting circuit for producing a signal when the engine speed is higher than a predetermined value, and an actuator control circuit for operating the actuator in opposite directions in accordance with engine speed increasing and decreasing signals. A logic gate circuit is provided to be operated by the signal from the vehicle speed detecting circuit, idling signal and signal from the engine speed detecting circuit for enabling the engine speed increasing and decreasing signals for performing an automatic idling speed control.
    • 一种用于内燃机的发动机怠速控制系统,包括用于致动用于增加和减少怠速的节气门的致动器,发动机速度信号发生电路,发动机转速增加信号发生电路和发动机转速降低信号发生电路, 用于在车速低于预定值时产生信号的车速检测电路,用于在发动机怠速运转中产生怠速信号的怠速信号发生电路,用于在发动机中产生信号的发动机速度检测电路 速度高于预定值,以及致动器控制电路,用于根据发动机转速增加和减小的信号在相反方向上操作致动器。 逻辑门电路由来自车速检测电路的信号,空载信号和来自发动机速度检测电路的信号进行操作,以使发动机转速增加和减小用于执行自动空转速度控制的信号。
    • 88. 发明授权
    • System for controlling air-fuel ratio
    • 空燃比控制系统
    • US4361124A
    • 1982-11-30
    • US174380
    • 1980-08-01
    • Hiroyuki Nakamura
    • Hiroyuki Nakamura
    • F02D41/14F02M7/24F02M7/00
    • F02D41/149
    • An electronic control system for controlling the air-fuel ratio for an internal combustion engine comprising an on-off type electromagnetic valve for correcting the air-fuel ratio of the air-fuel mixture supplied by an air-fuel mixture supply device, a comparing circuit for comparing the output signal of a detector with a reference value, an integration circuit connected to the comparing circuit, a pulse generator, and a comparator for producing pulses for driving the on-off type electromagnetic valve from output signals of the integration circuit and of the pulse generator for controlling the air-fuel ratio to a value substantially equal to the stoichiometric air-fuel ratio. A first converter converts the operation of the throttle valve to an electric quantity output, a second converter converts the prevailing ambient atmospheric pressure to another electric quantity output. Further, there is provided switches actuated by the output signals of the first converter for rendering the integration circuit non-responsive to the output of the detector and responsive to the output of the second converter.
    • 一种用于控制内燃机的空燃比的电子控制系统,包括用于校正由空气 - 燃料混合物供应装置供应的空气燃料混合物的空燃比的开 - 关型电磁阀,比较电路 用于将检测器的输出信号与参考值进行比较,连接到比较电路的积分电路,脉冲发生器和用于从积分电路的输出信号产生用于驱动开关型电磁阀的脉冲的比较器,以及 脉冲发生器,用于将空燃比控制到基本上等于理论空燃比的值。 第一转换器将节气门的操作转换为电量输出,第二转换器将主要的环境大气压力转换为另一电量输出。 此外,提供由第一转换器的输出信号驱动的开关,用于使积分电路不响应于检测器的输出并响应于第二转换器的输出。