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1. 发明申请

WO2008099156A3 SHAPE MEMORY ALLOY ACTUATION APPARATUS 审中-公开
标题翻译：形状记忆合金致动装置
公开(公告)号：WO2008099156A3
公开(公告)日：2008-11-20
申请号：PCT/GB2008000478
申请日：2008-02-11
申请人： 1 LTD , TOPLISS RICHARD , WEBBER DOMINIC GEORGE , LEEDHAM ROBERT JOHN , HOOLEY ANTHONY , RICHARDS DAVID CHARLES WILSON , GREGORY THOMAS MATTHEW
发明人： TOPLISS RICHARD , WEBBER DOMINIC GEORGE , LEEDHAM ROBERT JOHN , HOOLEY ANTHONY , RICHARDS DAVID CHARLES WILSON , GREGORY THOMAS MATTHEW
IPC分类号： F03G7/06 , G03B3/10
CPC分类号： G03B3/10 , F03G7/065 , H04N5/2254 , H04N5/23212
摘要： A miniature camera lens actuation apparatus comprises a support structure, a camera lens element supported on the support structure by a suspension system; and an SMA actuator connected between the support structure and the movable element to drive movement of the camera lens element. The control circuit may include a drive circuit and a sensor circuit which have separate electrical connections to the SMA actuator to reduce the impact of the resistance of the electrical connections on the sensing. The control circuit may vary the drive signal in response to a temperature signal indicative of the ambient temperature. An endstop limits movement to prevent extension of the SMA actuator in its unheated state beyond a maximum length which is at or below the length corresponding the local maximum resistance of the resistance-length curve. Control of position is effected using resistance of the SMA actuator as a measure of position. The control employs a "ratcheting" method to prevent a failure condition and an initial calibration step to derive a range of target resistance values. In manufacture, the position of a lens holder is adjusted relative to a carrier to provide focussing on the image sensor of an image of an object at a distance in the range from infinity to the hyperfocal distance when the SMA actuator is heated to a predetermined temperature greater than ambient temperature.
摘要翻译：微型摄像机镜头驱动装置包括支撑结构，通过悬架系统支撑在支撑结构上的摄像机镜头元件; 以及连接在所述支撑结构和所述可移动元件之间以驱动所述照相机镜头元件的移动的SMA致动器。控制电路可以包括驱动电路和传感器电路，其具有到SMA致动器的单独电连接以减少电连接的电阻对感测的影响。控制电路可以响应于表示环境温度的温度信号来改变驱动信号。止动器限制运动以防止SMA致动器在其未加热状态下延伸超过最大长度，该最大长度等于或低于与电阻 - 长度曲线的局部最大电阻相对应的长度。使用SMA致动器的电阻作为位置的测量来控制位置。控制采用“棘轮”方法来防止故障情况，并采用初始校准步骤来导出一系列目标电阻值。在制造中，相对于载体调整透镜架的位置，以在SMA致动器被加热到预定温度时在距无穷远到超焦距的范围内的距离处将物体的图像聚焦在图像传感器上大于环境温度。

2. 发明申请

WO2009071898A3 CONTROL OF A SHAPE MEMORY ALLOY ACTUATION ARRANGEMENT 审中-公开
标题翻译：一种形状记忆合金驱动装置的控制
公开(公告)号：WO2009071898A3
公开(公告)日：2009-12-10
申请号：PCT/GB2008004015
申请日：2008-12-03
申请人： CAMBRIDGE MECHATRONICS LTD , TOPLISS RICHARD , LEEDHAM ROBERT JOHN , RICHARDS DAVID CHARLES WILLIAM , GREGORY THOMAS MATTHEW
发明人： TOPLISS RICHARD , LEEDHAM ROBERT JOHN , RICHARDS DAVID CHARLES WILLIAM , GREGORY THOMAS MATTHEW
IPC分类号： F03G7/06 , G03B13/34
CPC分类号： F03G7/065 , G03B3/10 , G03B5/00
摘要： An SMA actuation arrangement comprises: an SMA actuator arranged on contraction caused by heating to drive movement of a movable element relative to a support structure; a current source operative to supply drive current through the SMA actuator to heat the SMA actuator; and a detector circuit operative to detect a measure of the resistance of the SMA actuator. Whilst detecting a measure of the resistance of the SMA actuator and controlling the drive current on the basis of the measure of the resistance of the SMA actuator; there is derived a measure of an electrical characteristic of the SMA actuator that is representative of the ambient temperature. Whilst applying closed-loop control an offset is added to the control signal which reduces the steady-state value of an error between the measure of the resistance of the SMA actuator and a target value. Whilst applying open-loop control, the control signal is generated taking into account the electrical characteristics of the SMA actuator measured during a calibration stage.
摘要翻译： SMA致动装置包括：SMA致动器，其布置在由加热引起的收缩上以驱动可移动元件相对于支撑结构的移动; 电流源，用于提供驱动电流通过SMA致动器以加热SMA致动器; 以及检测器电路，用于检测SMA致动器的电阻的测量值。在检测SMA致动器的电阻测量值并根据SMA致动器的电阻测量值控制驱动电流的同时，得出代表环境温度的SMA致动器的电特性的量度。在应用闭环控制时，将偏移量加到控制信号上，从而降低SMA致动器的电阻测量值与目标值之间的误差的稳态值。在应用开环控制时，考虑到校准阶段测量的SMA执行器的电气特性，生成控制信号。

3. 发明申请

WO2010049689A3 CONTROL OF A SHAPE MEMORY ALLOY ACTUATION ARRANGEMENT 审中-公开
标题翻译：形状记忆合金执行安排的控制
公开(公告)号：WO2010049689A3
公开(公告)日：2011-02-24
申请号：PCT/GB2009002570
申请日：2009-10-29
申请人： CAMBRIDGE MECHATRONICS LTD , GREGORY THOMAS MATTHEW , LEEDHAM ROBERT JOHN , RICHARDS DAVID CHARLES WILLIAM , TOPLISS RICHARD
发明人： GREGORY THOMAS MATTHEW , LEEDHAM ROBERT JOHN , RICHARDS DAVID CHARLES WILLIAM , TOPLISS RICHARD
IPC分类号： F03G7/06 , G03B3/10 , H04N5/225
CPC分类号： F03G7/065 , G03B3/10 , H04N5/2254 , H04N5/2257
摘要： An SMA actuation apparatus comprises: an SMA actuator arranged to drive movement of a movable element; a current supply supplying a drive current; a detection circuit detecting a measure of the resistance of the SMA actuator; and a control unit operative to generate a closed-loop control signal supplied to current supply for controlling the power of the drive current to drive the resistance of the SMA actuator to a target value. The control unit derives: an estimate of a characteristic temperature of the SMA actuation apparatus on the basis of the supplied power, using a thermal model; and a resistance offset on the basis thereof. The closed-loop control signal is generated on the basis of the error between the measure of the resistance of the SMA actuator and the target value of the resistance of the SMA actuator, adjusted by the resistance offset to compensate for variations in resistance.
摘要翻译： SMA致动装置包括：SMA致动器，被布置成驱动可移动元件的运动; 提供驱动电流的电流源; 检测所述SMA致动器的电阻的测量电路; 以及控制单元，用于产生提供给电流源的闭环控制信号，以控制驱动电流的功率以将SMA致动器的电阻驱动到目标值。控制单元使用热模型来估计基于所提供的功率的SMA致动装置的特征温度; 和基于其的电阻偏移。基于SMA致动器的电阻的测量与SMA致动器的电阻的目标值之间的误差产生闭环控制信号，由电阻偏移调整以补偿电阻的变化。

4. 发明申请

WO2009056858A2 SOUND PROJECTOR SET-UP 审中-公开
标题翻译： SOUND PROJECTOR设置
公开(公告)号：WO2009056858A2
公开(公告)日：2009-05-07
申请号：PCT/GB2008003707
申请日：2008-10-31
申请人： CAMBRIDGE MECHATRONICS LTD , EASTON MARK GEORGE , GREGORY THOMAS MATTHEW , RICHARDS DAVID CHARLES WILSON , WINDLE PAUL RAYMOND
发明人： EASTON MARK GEORGE , GREGORY THOMAS MATTHEW , RICHARDS DAVID CHARLES WILSON , WINDLE PAUL RAYMOND
IPC分类号： H04S7/00 , H04R1/40 , H04R3/12
CPC分类号： H04S7/301 , H04R3/12 , H04R2203/12 , H04R2205/022
摘要： There is disclosed a method and apparatus to assist in setting up an array-type Sound Projector. A sound beam is swept around the room and the magnitude of maximum correlation between the emitted test signal and a received signal at the listening position, along with the time of said maximum correlation, are recorded. Rules are then applied to determine the optimum position of the sound channels during playback. Sound beams having a wide angle and shorter path length are preferred for the left and right sound channels, whereas sound beams having smaller angles and longer path lengths are preferred for the surround sound channels.
摘要翻译：公开了一种辅助设置阵列式声音投影仪的方法和装置。在房间周围扫过声束，记录发射的测试信号与收听位置处的接收信号之间的最大相关性的大小以及所述最大相关的时间。然后应用规则来确定播放期间声道的最佳位置。对于左声道和右声道，优选具有广角度和较短路径长度的声束，而对于环绕声通道，优选具有较小角度和较长路径长度的声束。

5. 发明申请

WO2012038703A3 OPTICAL IMAGE STABILISATION 审中-公开
标题翻译：光学图像稳定
公开(公告)号：WO2012038703A3
公开(公告)日：2012-07-26
申请号：PCT/GB2011001384
申请日：2011-09-22
申请人： CAMBRIDGE MECHATRONICS LTD , GREGORY THOMAS MATTHEW , TOPLISS RICHARD
发明人： GREGORY THOMAS MATTHEW , TOPLISS RICHARD
IPC分类号： H04N5/225 , F03G7/06 , G02B27/64 , H04N5/232
CPC分类号： H04N5/23258 , F03G7/065 , G02B27/646 , G03B3/02 , G03B2205/0023 , G03B2205/0076 , H04N5/2257 , H04N5/23261 , H04N5/23287
摘要： A camera apparatus capable of providing optical image stabilisation comprises: a support structure; a camera unit comprising an image sensor and a lens system; a suspension system comprising a plurality of flexure elements supporting the camera unit on the support structure in a manner allowing the camera unit to tilt; and a plurality of SMA actuators. A sensor arrangement, whose output is used as the basis for generating drive signals, is mounted on the camera unit. A control circuit generates drive signals for the SMA actuators, by deriving closed-loop control signals representative of a desired degree of variation in the power of the drive signals from the output signals of the sensor arrangement without dependence on any measurement of the resistance of the SMA actuators, and generating the drive signals with powers that varies from a set-point power in correspondence with the closed-loop control signal.
摘要翻译：一种能够提供光学图像稳定的照相机设备包括：支撑结构; 包括图像传感器和透镜系统的相机单元; 包括多个挠曲元件的悬挂系统，所述多个挠曲元件以允许所述照相机单元倾斜的方式将所述照相机单元支撑在所述支撑结构上; 和多个SMA致动器。传感器装置的输出用作产生驱动信号的基础，安装在摄像机单元上。控制电路通过从传感器装置的输出信号导出表示驱动信号的功率的期望变化程度的闭环控制信号而产生用于SMA致动器的驱动信号，而不依赖于任何测量的 SMA致动器，并产生具有与闭环控制信号一致的设定点功率变化的功率的驱动信号。

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