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    • 8. 发明授权
    • Variable magnification copying apparatus
    • 变倍倍率复印机
    • US4894682A
    • 1990-01-16
    • US100453
    • 1987-09-24
    • Kazuyuki KondoJun KoideKanji YanoMakoto TanakaHaruo Tsunoi
    • Kazuyuki KondoJun KoideKanji YanoMakoto TanakaHaruo Tsunoi
    • G03G15/041G03B27/52
    • G03G15/041
    • A variable magnification image forming apparatus includes a photosensitive member, a light source, projecting device for forming and projecting on the photosensitive member an image of the original illuminated by the light source, the projecting device including lens system movable in accordance with a magnification of projection selected, a first limiting member for limiting light rays disposed with a fixed positional relation with respect to the lens system, and a second limiting member for limiting light rays in the lens system, the second limiting member being displaceable in a direction different from a direction of an optical axis of the lens system in accordance with magnification change to change the positional relation with respect to the first limiting member.
    • 可变放大图像形成装置包括感光构件,光源,用于在感光构件上形成和投影由光源照射的原稿的图像的投影装置,该投影装置包括可根据投影的放大率移动的透镜系统 用于限制相对于透镜系统以固定位置关系设置的光线的第一限制部件和用于限制透镜系统中的光线的第二限制部件,所述第二限制部件可沿与方向不同的方向移位 根据放大率的变化来改变透镜系统的光轴,以改变相对于第一限制构件的位置关系。
    • 9. 发明申请
    • Switched Reluctance Motor and Switched Reluctance Motor Drive System
    • 开关磁阻电机和开关磁阻电机驱动系统
    • US20130342039A1
    • 2013-12-26
    • US13529620
    • 2012-06-21
    • Takashi UMEMORIMakoto Tanaka
    • Takashi UMEMORIMakoto Tanaka
    • H02K19/10
    • H02K19/103H02K29/03
    • A regenerative switched reluctance motor and a motor drive system therefor are provided. The motor has a rotor 33 with stacked rotor units 33a-33d each comprising 2n salient poles and a stator 31 with stacked stator units 31a-31d surrounded by and corresponding to the rotor units and each comprising 4n magnetic poles to form a predetermined gap with the salient poles of the corresponding rotor unit. A first excitation coil 32(A) is wound on every other one of the 4n magnetic poles of each stator unit, while a second excitation coil 32(B) is wound on the remaining magnetic poles thereof. The rotor units are sequentially shifted by a predetermined angle in angular position relative to the stator units. The switched reluctance motor and the motor drive system can efficiently drive the motor and recover regenerative power with little torque ripple and noise.
    • 提供一种再生式开关磁阻电动机及其电动机驱动系统。 电动机具有转子33,转子33具有堆叠的转子单元33a-33d,每个转子单元包括2n个凸极,定子31具有层叠的定子单元31a-31d,该转子单元由转子单元包围并对应于转子单元,每个包括4n个磁极,以形成与 相应转子单元的极点。 第一励磁线圈32(A)缠绕在每个定子单元的4n个磁极中的每一个上,而第二激励线圈32(B)缠绕在其剩余的磁极上。 转子单元相对于定子单元在角度位置顺序地偏移预定的角度。 开关磁阻电动机和电机驱动系统可以有效地驱动电机,并以较小的转矩脉动和噪声来恢复再生电力。