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    • 1. 发明授权
    • Method and apparatus for beam deflection
    • 光束偏转的方法和装置
    • US07136547B2
    • 2006-11-14
    • US10075930
    • 2002-02-13
    • David C. BrownFelix StukalinMichael B. NussbaumEvghenii OnoicencoEdward L. Kelley
    • David C. BrownFelix StukalinMichael B. NussbaumEvghenii OnoicencoEdward L. Kelley
    • G02B6/26
    • G02B6/3572G02B6/3518G02B6/3556G02B6/3584G02B6/359G02B7/1828G02B26/0816G02B26/105
    • The invention provides a method and apparatus for directing a radiation beam (504, 606) in a desired direction. There is provided a movable member (10) supported for movement by a fixed member (40) and the movable member has an optical element, e.g a flat mirror (30) fixedly attached thereto. In one embodiment the mirror scans a radiation beam incident thereon in one plane. In a second embodiment, the radiation beam is scanned in two mutually perpendicular planes. A magnetic element (50) having a north and a south magnetic pole is fixedly attached to the movable member (10). A magnetically permeable stator element (70) that is stationary with respect to the movable member (10) and the magnetic element (50) is placed in the field of the magnetic element such that the stator element and said magnetic element mutually generate a magnetic traction force between them. A current coil (60) is wound around a portion of the stator element (70) and a current driver (400) is provided for driving a current in the current coil (60). The current induces an electromagnetic force in the stator element (70) and the electromagnetic force acts on the magnetic element (50) for controlling movement of the optical element (30) with respect to the fixed element (40). A radiation beam source (502) may be directed onto the movable mirror surface (30) and scanned by the movement of the mirror to direct the radiation beam in a desired propagation direction. Alternately, a radiation source (604) may be attached to the movable member (10) and pointed in a desired direction.
    • 本发明提供了一种用于将辐射束(504,606)引导到期望方向的方法和装置。 设置有可动构件(10),其被固定构件(40)支撑并移动,并且可移动构件具有光学元件,例如固定地附接到其上的平面镜(30)。 在一个实施例中,反射镜扫描在一个平面中入射到其上的辐射束。 在第二实施例中,辐射束在两个相互垂直的平面中被扫描。 具有北极和南磁极的磁性元件(50)固定在可动件(10)上。 相对于可动构件(10)和磁性元件(50)静止的导磁定子元件(70)被放置在磁性元件的场中,使得定子元件和所述磁性元件相互产生磁力牵引 他们之间的力量。 电流线圈(60)缠绕在定子元件(70)的一部分上,并且提供电流驱动器(400)以驱动电流线圈(60)中的电流。 电流在定子元件(70)中引起电磁力,并且电磁力作用在磁性元件(50)上,用于控制光学元件(30)相对于固定元件(40)的移动。 辐射束源(502)可以被引导到可动镜面(30)上,并且通过镜的移动被扫描以将辐射束引导到期望的传播方向。 或者,辐射源(604)可以附接到可动构件(10)并指向所需的方向。
    • 2. 发明授权
    • Apparatus for controlled movement of an element
    • 用于元件受控运动的装置
    • US07129601B2
    • 2006-10-31
    • US10075940
    • 2002-02-13
    • David C. BrownFelix StukalinMichael B. NussbaumKurt Pelsue
    • David C. BrownFelix StukalinMichael B. NussbaumKurt Pelsue
    • H02K41/00
    • G02B6/3572G02B6/3518G02B6/3556G02B6/359G02B7/1828G02B26/0816G02B26/105
    • A method and apparatus for supporting a movable member (10) with respect to a fixed member (40) is provided. The movable member (10) includes a magnetically permeable portion (81) contained therein and magnetic element (50) fixedly attached thereto and movable therewith. The movable member (10) is supported for rotation with respect to the fixed member (40) by an outer bearing surface (11) of the movable member and an inner bearing surface (20) of the fixed member (40). The fixed member (40) provides access to the movable member (10) from two sides thereof. A magnetically permeable stator element (70) is fixedly attached to the fixed member (40) and positioned within a magnetic flux field of the magnetic element (50) such that an air gap (73) is formed between the magnetic element (50) and the stator element (70). Accordingly a magnetic traction force acts across the air gap (73) for urging the moveable member (10) toward the fixed member (40) thereby clamping the movable element in a fixed orientation with respect to the movable element. The stator element (70) includes stator current coils (60) wound onto portions of the stator element for inducing electromagnetic forces within the stator element in response to a current passing through the coils. The electromagnetic force acts on the magnetic element (50) to move the movable member (10) in a controllable manner.
    • 提供了一种用于相对于固定构件(40)支撑可移动构件(10)的方法和装置。 可移动部件(10)包括容纳在其中的导磁部分(81)和固定地附接到其上的可移动的磁性元件(50)。 可动构件(10)通过可动构件的外侧支承面(11)与固定构件(40)的内侧支承面(20)相对于固定构件(40)支承。 固定构件(40)从其两侧提供对可动构件(10)的通路。 导磁定子元件(70)固定地附接到固定构件(40)上并定位在磁性元件(50)的磁通场内,使得在磁性元件(50)和 定子元件(70)。 因此,磁力牵引力作用在空气间隙(73)上,用于将可移动构件(10)推向固定构件(40),从而将可移动元件相对于可移动元件夹紧在固定方向。 定子元件(70)包括缠绕在定子元件的部分上的定子电流线圈(60),用于响应于通过线圈的电流在定子元件内感应电磁力。 电磁力作用在磁性元件(50)上,以可控制的方式移动可动件(10)。
    • 3. 发明授权
    • Controlled high speed reciprocating angular motion actuator
    • 受控高速往复角运动执行器
    • US06448673B1
    • 2002-09-10
    • US09872711
    • 2001-06-01
    • David C. BrownMichael B. NussbaumFelix Stukalin
    • David C. BrownMichael B. NussbaumFelix Stukalin
    • G06K710
    • H02K33/16
    • A reciprocating rotary action actuator consisting of a rotor and stator that can be added to a bi-directional rotary motor or galvanometer scanner, where the stator has a ring magnet and a pair of soft iron pole pieces that concentrate the flux of the ring magnet into a concentric set of narrow, uniformly spaced, axially oriented, magnetic flux fields intersecting the rotor's field of travel. The rotor has small permanent magnets embedded in the periphery of a nonconductive, nonmagnetic rotor core. The rotor magnets have the same number and spacing as the stator's magnetic flux fields. The magnet poles are oriented opposite the flux fields of the stator pole pieces, so that upon rotation, the rotor magnets encounter the stator flux fields at each end of rotor travel, creating an opposing force that reverses the angular direction of the rotor with minimal requirement for actuator current and generation of thermal losses.
    • 由转子和定子组成的往复旋转动作致动器,其可以添加到双向旋转马达或电流计扫描器中,其中定子具有环形磁体和将环形磁体的磁通量集中在一起的一对软铁极片 与转子的行进区域相交的同心的一组狭窄的均匀间隔的轴向取向的磁通场。 转子具有嵌入在非导电非磁性转子芯的周边的小永久磁铁。 转子磁体具有与定子的磁通场相同的数量和间隔。 磁极与定子极片的磁场相反地定向,从而在旋转时,转子磁体在转子行程的每一端遇到定子磁通场,产生相反的力,以最小的要求使转子的角度方向反转 用于执行器电流和产生热损失。
    • 8. 发明申请
    • Hybrid Filter for Audio Switching Amplifier
    • 音频开关放大器的混合滤波器
    • US20080192960A1
    • 2008-08-14
    • US11673325
    • 2007-02-09
    • Michael B. NussbaumKenneth B. Delpapa
    • Michael B. NussbaumKenneth B. Delpapa
    • H03F21/00
    • H01F37/00H01F3/14H01F17/04H01F27/34H01F2017/0093H01F2017/065H03F3/217
    • An output filter for a switching audio amplifier includes a magnetic core having a gapped central leg and a first and a second outer leg. The central leg and the first outer leg form a first independent magnetic path and the central leg and the second outer leg form a second independent magnetic path. The first and the second outer leg together form a joint magnetic path. A first coil having a first plurality of turns is wound around the first outer leg. A first load current applied to the first coil generates a first magnetic flux in a first direction through the joint magnetic path. A second coil having second plurality of turns is wound around the second outer leg. A second load current applied to the second coil generates a second magnetic flux in a second direction opposite to the first direction through the joint magnetic path.
    • 用于开关音频放大器的输出滤波器包括具有间隙中心支腿和第一和第二外腿的磁芯。 中心腿和第一外腿形成第一独立磁路,中心腿和第二外腿形成第二独立磁路。 第一和第二外腿一起形成关节磁路。 具有第一多个匝的第一线圈缠绕在第一外腿上。 施加到第一线圈的第一负载电流通过接头磁路在第一方向上产生第一磁通量。 具有第二多个匝的第二线圈围绕第二外腿缠绕。 施加到第二线圈的第二负载电流通过接合磁路在与第一方向相反的第二方向上产生第二磁通。
    • 10. 发明授权
    • Digital control servo system
    • 数字控制伺服系统
    • US07421308B2
    • 2008-09-02
    • US11627631
    • 2007-01-26
    • Michael B. NussbaumMichael R. ShannonFrederick A. Stewart
    • Michael B. NussbaumMichael R. ShannonFrederick A. Stewart
    • G05B19/29
    • G06K7/10851
    • A limited rotation motor optical scanning system is disclosed that includes a limited rotation motor scanner, a digital controller servo system, a position feedback unit, a wide angle compensation unit, a digital processor, and an adjustment unit. The limited rotation motor scanner element is adapted for directing an energy beam to at least one location within a field of view. The digital controlled servo system is adapted for controlling motion of the limited rotation motor scanner element in accordance with a servo command waveform. The position feedback unit is for providing a position feedback signal indicative of a rotational position of the limited rotation motor scanner element. The wide angle compensation unit is for receiving the position feedback signal and for providing a boost signal that is representative of a boost factor that compensates for torque constant variation with the rotational position of said limited rotation motor scanner element. The digital processor is for providing a set of control parameters for use during the command waveform in conformance with which the command waveform will be employed to control motion of the limited rotation motor scanner element. The adjustment unit is for providing an adjusted output signal responsive to the control parameters and responsive to the boost signal to control the motion of the limited rotation motor scanner element while compensating for torque constant variation with the rotational position of the limited rotation motor scanner element during the command waveform.
    • 公开了一种有限旋转电机光学扫描系统,其包括有限旋转电机扫描器,数字控制器伺服系统,位置反馈单元,广角补偿单元,数字处理器和调整单元。 有限旋转电动机扫描器元件适于将能量束引导到视场内的至少一个位置。 数字控制伺服系统适于根据伺服命令波形控制受限旋转电机扫描器元件的运动。 位置反馈单元用于提供指示有限旋转电机扫描器元件的旋转位置的位置反馈信号。 广角补偿单元用于接收位置反馈信号,并用于提供代表升压因子的升压信号,该升压因子补偿与所述限制旋转电动机扫描器元件的旋转位置的转矩恒定变化。 数字处理器用于提供一组在命令波形期间使用的控制参数,以使其与指令波形一起使用以控制有限旋转电动机扫描器元件的运动。 调整单元用于响应于控制参数提供经调整的输出信号,并且响应于升压信号来控制受限旋转电动机扫描器元件的运动,同时补偿在限制旋转电动机扫描器元件的旋转位置期间的转矩恒定变化 命令波形。