磁気駆動アクチュエータ
    1.
    发明申请
    磁気駆動アクチュエータ 审中-公开
    磁力驱动器

    公开(公告)号:WO2006117867A1

    公开(公告)日:2006-11-09

    申请号:PCT/JP2005/008207

    申请日:2005-04-28

    CPC classification number: H02K41/0356 H02K2201/18

    Abstract: A magnetic drive actuator enhances damping effect upon occurrence of external turbulence as follows. An electric resonance circuit is formed by connecting a supplemental coil (26) in parallel to a driving coil (11) attached to a movable portion (coil support, lens holder) supported by a plate spring so that when the movable portion is displayed by an external turbulence, damping effect is exhibited by an induction electromotive force. The electric resonance circuit has a resonance frequency substantially equal to a resonance frequency of a spring-mass system. Since the driving frequency exists in a low frequency band apart from the resonance frequency, a strong damping force can be obtained for the resonance caused by incoming external turbulence without affecting the driving characteristic. Moreover, it is possible to reduce the affect of the external turbulence on light projection/reception control in a laser radar device, thereby obtaining a preferable scanning characteristic.

    Abstract translation: 如下所述,磁驱动致动器在发生外部湍流时增强阻尼效应。 通过将辅助线圈(26)平行地连接到由平板弹簧支撑的可移动部分(线圈支撑件,透镜支架)上的驱动线圈(11)而形成电谐振电路,使得当可动部分由 外部紊流,通过感应电动势表现出阻尼效果。 电谐振电路的谐振频率基本上等于弹簧质量系统的谐振频率。 由于驱动频率存在于与谐振频率相比的低频带中,所以可以获得由于进入的外部湍流引起的谐振而不影响驱动特性的强阻尼力。 此外,可以减少激光雷达装置中的外部湍流对光投射/接收控制的影响,从而获得优选的扫描特性。

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