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    METHOD OF CONTROLLING A MOTOR DRIVEN SYSTEM, APPARATUS FOR CONTROLLING A MOTOR DRIVEN SYSTEM AND A MOTOR DRIVEN SYSTEM CONTROLLED IN ACCORDANCE WITH THE DISCLOSED METHOD
    1.
    发明申请
    METHOD OF CONTROLLING A MOTOR DRIVEN SYSTEM, APPARATUS FOR CONTROLLING A MOTOR DRIVEN SYSTEM AND A MOTOR DRIVEN SYSTEM CONTROLLED IN ACCORDANCE WITH THE DISCLOSED METHOD 审中-公开
    控制电机驱动系统的方法，用于控制电机驱动系统的装置和根据公开方法控制的电机驱动系统

    公开(公告)号：US20170041552A1

    公开(公告)日：2017-02-09

    申请号：US14821395

    申请日：2015-08-07

    Applicant: ANALOG DEVICES GLOBAL

    Inventor： Javier CALPE MARAVILLA ,  Eoin E. ENGLISH ,  Rafael MAHIQUES ,  Jose Carlos CANADA ,  Maria Jose MARTINEZ

    IPC: H04N5/232

    Abstract: Actuators are used to move a variety of objects to desired positions. It is generally desirable that they can do this quickly without exhibiting overshoot or ringing. Some actuators are required to respond very quickly and examples of these are voice coil drivers used to move lenses in autofocus cameras provided in everyday devices such as smart phones and tablets. A rapid two step controller scheme had already been disclosed by Analog Devices Inc. Whilst the scheme works well, it can only be used reliably if the resonant frequency of the actuator is known to within 2 or 3%. The inventors have discovered that the resonant frequency of an actuator unexpectedly changes as a function of position. This disclosure provides ways of modifying the control scheme to cope with changes in resonant frequency.

    Abstract translation: 致动器用于将各种物体移动到所需位置。 通常希望它们可以快速地进行，而不会出现过冲或振铃。 一些执行器需要很快的响应，其中的例子是用于在诸如智能手机和平板电脑的日常设备中提供的自动对焦相机中移动透镜的音圈驱动器。 ADI公司已经公布了一个快速的两步控制器方案。虽然该方案工作正常，但是如果致动器的谐振频率已知为2％或3％，则只能可靠地使用该方案。 发明人已经发现，致动器的谐振频率意外地作为位置的函数而改变。 本公开提供了修改控制方案以应对谐振频率变化的方式。

    SYSTEMS, CIRCUITS AND METHODS FOR DETERMINING A POSITION OF A MOVABLE OBJECT
    3.
    发明申请
    SYSTEMS, CIRCUITS AND METHODS FOR DETERMINING A POSITION OF A MOVABLE OBJECT 审中-公开
    用于确定可移动对象位置的系统，电路和方法

    公开(公告)号：US20160363462A1

    公开(公告)日：2016-12-15

    申请号：US14737403

    申请日：2015-06-11

    Applicant: Analog Devices Global

    Inventor： Eoin E. ENGLISH ,  Javier CALPE MARAVILLA ,  Robert GUYOL ,  Alan J. O'DONNELL ,  Maria Jose MARTINEZ ,  Jan KUBIK ,  Krystian BALICKI

    IPC: G01D5/20 ,  G01D5/26

    CPC classification number: G01D5/20 ,  G01D5/145

    Abstract: An embodiment of a position sensing system includes a signal generation circuit to generate an excitation signal according to a selected characteristic signal, a drive circuit to drive an excitation source with the excitation signal, an input circuit to receive a sensor output while driving the excitation source, a signal detection circuit to identify a component of the sensor output corresponding to the characteristic signal, and a control circuit to determine the position of the movable object as a function of the identified component of the sensor output. The positioning system may be included an electronic camera, where the movable object may be a lens. The excitation source may be a conductive coil, the excitation a magnetic field, and the sensor a magneto resistive sensor. Alternatively, the excitation source may be an optical excitation source, the excitation an optical excitation, and the sensor an optical sensor.

    Abstract translation: 位置检测系统的一个实施例包括：信号产生电路，用于根据所选择的特征信号产生激励信号;驱动电路，用激励信号驱动激励源;输入电路，用于在驱动激励源时接收传感器输出; 信号检测电路，用于识别对应于特征信号的传感器输出的分量;以及控制电路，用于根据所识别的传感器输出的分量确定可移动物体的位置。 定位系统可以包括电子照相机，其中可移动物体可以是透镜。 励磁源可以是导电线圈，激励磁场，并且传感器是磁阻传感器。 或者，激发源可以是光学激发源，激发光学激发，并且传感器是光学传感器。

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