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    • 11. 发明申请
    • Novel optically active biaryl phosphorus compound and production process thereof
    • 新型光学活性联芳基磷化合物及其制备方法
    • US20080139822A1
    • 2008-06-12
    • US12000083
    • 2007-12-07
    • Ken TanakaWataru Kuriyama
    • Ken TanakaWataru Kuriyama
    • C07F9/02
    • C07F9/5728C07B53/00C07F9/4021C07F9/5022C07F9/5325C07F9/65517Y02P20/55
    • The invention provides a novel optically active biaryl phosphorus compound that can be produced easily without the step of optical resolution, which is almost indispensable step in a conventional method.A phosphorus compound defined by the following general formula (1): in the formula (1), R1 denotes a hydrogen atom or a hydroxy protective group; R2 denotes a group defined by the following formula (R2-1) or (R2-2); R3, R4, R5, and R6 may be the same or different and independently denote a hydrogen atom, an alkyl group, an alkoxy group, an acyloxy group, a halogen atom, a haloalkyl group, or a dialkylamino group; two among R3, R4, R5, and R6 may form an aromatic ring optionally having a substituent group, and two among R3, R4, R5, and R6 may form a methylene chain optionally having a substituent group or a (poly)methylenedioxy group optionally having a substituent group: in the formula (R2-1) and (R2-2), R7 denotes an alkyl group, a cycloalkyl group, an aryl group, an alkoxy group, or an aryloxy group; R8 and R9 independently denote a hydrogen atom, an alkyl group, or an aryl group; z denotes a divalent group; and a denotes an integer of 0 or 1.
    • 本发明提供了一种新颖的光学活性联芳基磷化合物,其可以容易地制备而无需光学拆分的步骤,这在常规方法中几乎不可缺少的步骤。 由以下通式(1)定义的磷化合物:在式(1)中,R 1表示氢原子或羟基保护基; R 2表示由下式(R 2→2)或(R 2→2)定义的基团。 R 3,R 4,R 5和R 6可以相同或不同,并且独立地表示 氢原子,烷基,烷氧基,酰氧基,卤素原子,卤代烷基或二烷基氨基; R 3,R 4,R 5和R 6中的两个可以形成任选具有 取代基,R 3,R 4,R 5和R 6中的两个可以形成亚甲基 可选地具有取代基的链或可以具有取代基的(聚)亚甲二氧基:在式(R 2-2中)和(R 2-2)中, R 7表示烷基,环烷基,芳基,烷氧基或芳氧基; R 8和R 9独立地表示氢原子,烷基或芳基; z表示二价基团; a表示0或1的整数。
    • 16. 发明申请
    • Rotation detecting apparatus and rotation detecting system
    • 旋转检测装置和旋转检测系统
    • US20110262112A1
    • 2011-10-27
    • US12932410
    • 2011-02-24
    • Ken TanakaYasuhiro FukagawaMasaru Touge
    • Ken TanakaYasuhiro FukagawaMasaru Touge
    • H02P7/29H02P3/08H02P5/50
    • H02K11/001G01P3/48H02K11/20H02P7/0094
    • A rotation detecting apparatus for detecting a rotational state of a direct-current motor includes a driving device, a control device, an energization detecting device, an alternating-current component detecting device, and a rotational state detecting device. An impedance between brushes of the motor changes periodically in accordance with rotation of the motor. The alternating-current component detecting device detects change of an alternating-current component of electric current that is supplied to the motor based on an electrical quantity. The change of the alternating-current component is caused by change of the impedance caused in accordance with the rotation. The rotational state detecting device detects at least one of a rotation angle, a rotational direction, and a rotational speed of the motor based on a detection result of the alternating-current component detecting device.
    • 用于检测直流电动机的旋转状态的旋转检测装置包括驱动装置,控制装置,通电检测装置,交流分量检测装置和旋转状态检测装置。 马达的电刷之间的阻抗根据马达的转动而周期性地变化。 交流分量检测装置基于电量检测供给到电动机的电流的交流分量的变化。 交流分量的变化是由根据旋转引起的阻抗的变化引起的。 旋转状态检测装置基于交流分量检测装置的检测结果来检测电动机的旋转角度,旋转方向和转速中的至少一个。
    • 18. 发明申请
    • Rotation sensor and direct current motor
    • 旋转传感器和直流电动机
    • US20110148258A1
    • 2011-06-23
    • US12928641
    • 2010-12-16
    • Ken TanakaYasuhiro FukagawaMasaru Touge
    • Ken TanakaYasuhiro FukagawaMasaru Touge
    • H02K11/00
    • H02K23/66
    • A direct current motor includes an armature coil having at least three phase coils, a commutator having multiple commutator segments connected to the armature coil, a pair of brushes in slidable contact with the commutator to supply power to the phase coils through the commutator, a rotation shaft, and a ring varistor coaxially fixed to the rotation shaft and having a ring-shaped varistor body and multiple electrodes that are circumferentially arranged on a surface of the varistor body. Each commutator segment is connected to a corresponding electrode of the ring varistor. The electrodes of the ring varistor are paired to form electrode pairs. Each electrode pair includes any two of the electrodes. A capacitance of one electrode pair is different from a capacitance of another electrode pair.
    • 直流电动机包括具有至少三相线圈的电枢线圈,具有连接到电枢线圈的多个换向器段的换向器,与换向器滑动接触的一对电刷,以通过换向器向相线圈供电, 轴和环形变阻器同轴地固定在旋转轴上,并且具有环形可变电阻体和周向布置在可变电阻体的表面上的多个电极。 每个换向器段连接到环形变阻器的相应电极。 环形变阻器的电极配对形成电极对。 每个电极对包括任何两个电极。 一个电极对的电容与另一个电极对的电容不同。