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    • 91. 发明申请
    • ACTUATOR
    • 执行机构
    • US20090091194A1
    • 2009-04-09
    • US12333888
    • 2008-12-12
    • Takuya NagaiYoshihiro SomenoNaoyuki Tokuchi
    • Takuya NagaiYoshihiro SomenoNaoyuki Tokuchi
    • H02K41/00
    • H02K41/0358G02B26/085G02B26/101G02B26/105
    • When currents are applied to driving coils, electromagnetic forces are generated between the currents and magnetic fluxes passing through gaps, a shaft member is swung in one direction, and a tilt angle of a mirror (controlled object) changes relative to a support center point. Electromotive forces generated in detection coils when the magnetic fluxes pass through the detection coils are given as feedback signals to a control unit. The control unit generates currents on the basis of the feedback signals, and applies the currents to the driving coils. By detecting the velocity of the mirror during swinging with the detection coils, the structure of the actuator can be simplified. Further, the responsivity can be increased, and the tilt angle of the mirror can be detected with high accuracy.
    • 当电流施加到驱动线圈时,在电流和通过间隙的磁通之间产生电磁力,轴构件在一个方向上摆动,并且反射镜(受控对象)的倾斜角相对于支撑中心点改变。 当磁通量通过检测线圈时,在检测线圈中产生的电动势作为反馈信号被提供给控制单元。 控制单元基于反馈信号生成电流,并将电流施加到驱动线圈。 通过在用检测线圈摆动时检测反射镜的速度,可以简化致动器的结构。 此外,可以提高响应度,并且可以高精度地检测反射镜的倾斜角度。