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    • 3. 发明授权
    • Hybrid high-bandwidth deformable fast steering mirror
    • 混合高带宽可变形快速转向镜
    • US07380950B1
    • 2008-06-03
    • US11057199
    • 2005-02-15
    • Kenneth R. LorellStephen R. WinzerCraig L. HornNatarajan ShankarRobert R. Clappier
    • Kenneth R. LorellStephen R. WinzerCraig L. HornNatarajan ShankarRobert R. Clappier
    • G02B5/08
    • G02B26/0825
    • A high-bandwidth deformable fast steering mirror (“HDFSM”) system, including an electromechanical fast steering mirror (“FSM”) apparatus, and a deformable mirror (“DM”) apparatus mounted on the electromechanical FSM apparatus. The DM apparatus further includes a DM substrate, a backplane assembly, a plurality of electrostrictive actuators in physical communication with and between the DM substrate and the backplane assembly, for deforming the DM substrate, and a plurality of strain gauges, each strain gauge mounted on one of the plurality of electrostrictive actuators, the plurality of strain gauges measuring individual positions of the plurality of electrostrictive actuators and transmitting the positions as actuator position signals. The high-bandwidth deformable FSM also includes a closed-loop control system, the control system controlling the electromechanical FSM apparatus and the DM apparatus based upon a command input and the actuator position signals.
    • 一种高带宽可变形快速转向镜(“HDFSM”)系统,包括安装在机电式FSM装置上的机电快速转向镜(“FSM”)装置和可变形反射镜(“DM”)装置。 DM设备还包括DM基板,背板组件,与DM基板和背板组件物理连通并且在DM基板和背板组件之间的多个电致伸缩致动器,用于使DM基板变形,以及多个应变计,每个应变计安装在 多个电致伸缩致动器中的一个,多个应变计测量多个电致伸缩致动器的各个位置,并将位置作为致动器位置信号传输。 高带宽可变形FSM还包括闭环控制系统,控制系统基于命令输入和执行器位置信号控制机电FSM装置和DM装置。
    • 4. 发明授权
    • All sky pointing attitude control system
    • 全天空指向姿态控制系统
    • US4012018A
    • 1977-03-15
    • US403695
    • 1973-10-04
    • Kenneth R. LorellJames P. Murphy
    • Kenneth R. LorellJames P. Murphy
    • B64G1/24B64G1/28B64G1/36B64G1/10
    • B64G1/24B64G1/288B64G1/361B64G1/363
    • In a strapped-down gyroscope space vehicle attitude control system, a method and apparatus are provided for gyro drift and input axis misalignment error compensation employing a sun and a star tracker and preselected vehicle calibration maneuvers. During the preselected maneuvers using the sun and a star as external references, the outputs of two-axis strapped-down gyroscopes nominally aligned with the optical axis of the sun and star trackers are measured. The measured outputs provide gyro drift calibration, roll, pitch and yaw axis scale factors and values corresponding to the degree of nonorthogonality between the roll axis and the pitch and yaw gyro input axes and the nonorthogonality of the roll and pitch axes relative to the yaw axis. With the calibration data so obtained stored in a special purpose digital computer, the vehicle is then rolled and yawed through precomputed angles as modified by the calibration data to acquire a target without further recourse to external references.
    • 在捆扎式陀螺仪空间车辆姿态控制系统中,提供了一种使用太阳和星形跟踪器的陀螺漂移和输入轴未对准误差补偿的方法和装置以及预选车辆校准操作。 在使用太阳和星形作为外部参考的预选演习期间,测量名义上与太阳和星形跟踪器的光轴对准的双轴捆绑式陀螺仪的输出。 测量的输出提供陀螺仪漂移校准,滚动,俯仰和偏航轴比例因子和对应于滚动轴与俯仰和偏航陀螺仪输入轴之间的非正交性程度以及相对于偏转轴的滚动和俯仰轴的非正交性的值 。 使用如此获得的校准数据存储在专用数字计算机中,然后通过由校准数据修改的预计算角度来滚动和偏航,以获得目标而不需要进一步追求外部参考。
    • 6. 发明授权
    • Large stroke linear motion flexural apparatus
    • 大行程直线运动弯曲装置
    • US07086300B1
    • 2006-08-08
    • US10412565
    • 2003-04-11
    • Donald F. ZacharieKenneth R. LorellJean-Noel Auburn
    • Donald F. ZacharieKenneth R. LorellJean-Noel Auburn
    • F16H61/06
    • F16F15/073F16F1/027F16F2230/0052F16F2230/34F16H21/04
    • Embodiments of the present invention are directed to a linear motion flexural apparatus to provide friction-free linear travel for large stroke motion. In one embodiment, a linear motion flexural apparatus comprises a first member having a first surface, and a second member having a second surface which is spaced from the first surface of the first member. One of the first member and the second member is movable relative to another one of the first member and the second member in a linear direction. At least one sheet is disposed between the first surface of the first member and the second surface of the second member. Each sheet has a first edge portion and a second edge portion generally opposite from the first edge portion. The first edge portion is attached to the first surface of the first member. The second edge portion is attached to the second surface of the second member. Each sheet has a curved portion with a shape which is substantially unchanged during movement between the first member and the second member in the linear direction.
    • 本发明的实施例涉及一种用于为大行程运动提供无摩擦线性行程的直线运动弯曲装置。 在一个实施例中,线性运动弯曲装置包括具有第一表面的第一构件和具有与第一构件的第一表面间隔开的第二表面的第二构件。 第一构件和第二构件中的一个可相对于第一构件和第二构件中的另一个在线性方向上移动。 至少一个片材设置在第一构件的第一表面和第二构件的第二表面之间。 每个片材具有大致与第一边缘部分相反的第一边缘部分和第二边缘部分。 第一边缘部分附接到第一构件的第一表面。 第二边缘部分附接到第二构件的第二表面。 每个片材具有弯曲部分,其形状在第一构件和第二构件之间在线性方向上移动期间基本上不变。
    • 7. 发明授权
    • Adaptive error correction control system for optimizing mirror
positioning in a spatial chopping or scanning telescope
    • 自适应纠错控制系统,用于优化空间斩波或扫描望远镜中的镜像定位
    • US5359520A
    • 1994-10-25
    • US895313
    • 1992-06-08
    • Jean-Noel AubrunKenneth R. LorellPaul J. Reshatoff
    • Jean-Noel AubrunKenneth R. LorellPaul J. Reshatoff
    • F25B9/14G05B5/01G05B21/02G05B13/02G05B19/18G05B5/10
    • G05B21/02F25B9/14G05B5/01F25B2309/001F25B2500/13
    • An adaptive control includes a digital error correction system (DECS) to reduce control system error to near zero by anticipating a problem and feeding forward in time a correction to deal with the problem before it happens. The adaptive control is used in a controlled system of the kind which is cyclical in operation and which operates in response to repetitive cycle commands so that the operation of the system is substantially predictable for a significant number of cycles of operation. The adaptive control is incorporated in a spatial chopping or scanning telescope system of the kind in which a telescope mirror is moved in repetitive cycle motions and in a rigidly prescribed pattern between varied orientations and wherein the mirror is held for a prescribed, relatively long period of time in each orientation and is moved rapidly in a relatively short period of time from one orientation to another. The adaptive control permits accurate control of the command waveform frequency and shape, enables the telescope system to keep position error near zero by using, in combination with the feedback loop, a feed forward loop directly driving the actuators during the transition period and actively holding the mirror in position during the dwell periods. The adaptive control provides the ability to eliminate overshoot and ringing, because the force command provides the precise amount of braking required to exactly stop the mirror motion.
    • 一种自适应控制包括一个数字纠错系统(DECS),通过预测问题,将控制系统误差减少到接近于零,并且在发生之前及时向前馈送纠正处理该问题。 自适应控制被用于在操作中是周期性的并且响应于重复循环命令而操作的受控系统,使得系统的操作对于大量的操作循环是可以预见的。 自适应控制被结合在这样的空间斩波或扫描望远镜系统中,其中望远镜在重复循环运动中以刚性规定的方式移动,并且其中镜子保持规定的较长时间段 时间在每个方向,并在相对较短的时间段内从一个方向快速移动到另一个方向。 自适应控制允许对指令波形频率和形状的精确控制,使望远镜系统能够通过与反馈回路结合使用在过渡期间直接驱动致动器的前馈回路来保持位置误差接近于零,并且主动地保持 镜像在停留期间的位置。 自适应控制提供消除过冲和振铃的能力,因为力指令提供准确停止镜面运动所需的精确量的制动。