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1. 发明授权

US07616084B2 Variable reluctance fast positioning system and methods 有权
标题翻译：可变磁阻快速定位系统及方法
公开(公告)号：US07616084B2
公开(公告)日：2009-11-10
申请号：US10977122
申请日：2004-10-29
申请人： Xiaodong Lu , David L. Trumper
发明人： Xiaodong Lu , David L. Trumper
IPC分类号： H01F7/00 , H01F7/20
CPC分类号： B23B1/00 , B23B5/36 , H02K33/16 , Y10T82/30
摘要： The preferred embodiments of the present invention are directed to high bandwidth positioning systems such as fast tool servos (FTS). The applications of this invention include, for example, diamond turning of mold with structured surface for mass production of films for brightness enhancement and controlled reflectivity, diamond turning of molds for contact lens and micro-optical positioning devices.Preferred embodiments of the fast tool servo can have a closed-loop bandwidth of approximately 20±5 kHz, with acceleration of up to approximately 1000 G or more. The resolution or position error is approximately 1 nm root mean square (RMS). In a preferred embodiment, the full stroke of 50 μm can be achieved up to 1 kHz operation.
摘要翻译：本发明的优选实施例涉及诸如快速工具伺服（FTS）的高带宽定位系统。本发明的应用包括例如具有用于批量生产用于亮度增强和受控反射率的膜的结构化表面的模具的金刚石车削，用于隐形眼镜的模具的金刚石车削和微型光学定位装置。快速工具伺服的优选实施例可以具有大约20±5kHz的闭环带宽，加速度高达约1000G或更大。分辨率或位置误差约为1 nm均方根（RMS）。在优选实施例中，可以实现高达1kHz操作的50um的全行程。

2. 发明授权

US07840372B2 Self-calibration method and apparatus for on-axis rotary encoders 有权
标题翻译：用于轴上旋转编码器的自校准方法和装置
公开(公告)号：US07840372B2
公开(公告)日：2010-11-23
申请号：US12168789
申请日：2008-07-07
申请人： Xiaodong Lu
发明人： Xiaodong Lu
IPC分类号： G01C9/00
CPC分类号： G01P21/02 , G01D5/24452 , G01D5/2449
摘要： A self-calibration method and apparatus for on-axis rotary encoders comprising the steps of: receiving output signals from a detector during a spindle-free response period, the signals including a plurality of data sets wherein each data set comprises the periods between sampling events occurring in one revolution of the encoder at an angular speed, selecting a data set pair from the output signals, wherein the data set pair contains two linearly uncorrelated data sets; defining a model of the angular distances between each sampling event occurring in one revolution of the encoder as a function of one or more damping coefficients and the periods between each sampling event as contained in the data set pair; solving the model for the angular distances for the data set pair using circular closure and dynamic reversal techniques; and establishing an encoder error map using the selected solved angular distances from the model.
摘要翻译：一种用于轴上旋转编码器的自校准方法和装置，包括以下步骤：在无主轴响应周期期间从检测器接收输出信号，所述信号包括多个数据组，其中每个数据组包括采样事件之间的周期以角速度在编码器的一圈中出现，从输出信号中选择数据组对，其中数据组对包含两个线性不相关的数据集; 定义作为一个或多个阻尼系数的函数的编码器的一圈中发生的每个采样事件之间的角距离的模型和包含在数据组对中的每个采样事件之间的周期; 使用圆形闭合和动态反转技术解决数据集对的角距离模型; 并使用来自模型的所选求解的角距离建立编码器误差图。

3. 发明申请

US20090030638A1 SELF-CALIBRATION METHOD AND APPARATUS FOR ON-AXIS ROTARY ENCODERS 有权
标题翻译：自轴向编码器的自校准方法和装置
公开(公告)号：US20090030638A1
公开(公告)日：2009-01-29
申请号：US12168789
申请日：2008-07-07
申请人： Xiaodong LU
发明人： Xiaodong LU
IPC分类号： G01P21/00
CPC分类号： G01P21/02 , G01D5/24452 , G01D5/2449
摘要： A self-calibration method and apparatus for on-axis rotary encoders comprising the steps of: receiving output signals from a detector during a spindle-free response period, the signals including a plurality of data sets wherein each data set comprises the periods between sampling events occurring in one revolution of the encoder at an angular speed, selecting a data set pair from the output signals, wherein the data set pair contains two linearly uncorrelated data sets; defining a model of the angular distances between each sampling event occurring in one revolution of the encoder as a function of one or more damping coefficients and the periods between each sampling event as contained in the data set pair; solving the model for the angular distances for the data set pair using circular closure and dynamic reversal techniques; and establishing an encoder error map using the selected solved angular distances from the model.
摘要翻译：一种用于轴上旋转编码器的自校准方法和装置，包括以下步骤：在无主轴响应周期期间从检测器接收输出信号，所述信号包括多个数据组，其中每个数据组包括采样事件之间的周期以角速度在编码器的一圈中出现，从输出信号中选择数据组对，其中数据组对包含两个线性不相关的数据集; 定义作为一个或多个阻尼系数的函数的编码器的一圈中发生的每个采样事件之间的角距离的模型和包含在数据组对中的每个采样事件之间的周期; 使用圆形闭合和动态反转技术解决数据集对的角距离模型; 并使用来自模型的所选求解的角距离建立编码器误差图。

4. 发明申请

US20050223858A1 Variable reluctance fast positioning system and methods 有权
标题翻译：可变磁阻快速定位系统及方法
公开(公告)号：US20050223858A1
公开(公告)日：2005-10-13
申请号：US10977122
申请日：2004-10-29
申请人： Xiaodong Lu , David Trumper
发明人： Xiaodong Lu , David Trumper
IPC分类号： B23B1/00 , B23B3/00 , B23B5/36 , H02K33/00 , H02K33/16
CPC分类号： B23B1/00 , B23B5/36 , H02K33/16 , Y10T82/30
摘要： The preferred embodiments of the present invention are directed to high bandwidth positioning systems such as fast tool servos (FTS). The applications of this invention include, for example, diamond turning of mold with structured surface for mass production of films for brightness enhancement and controlled reflectivity, diamond turning of molds for contact lens and micro-optical positioning devices. Preferred embodiments of the fast tool servo can have a closed-loop bandwidth of approximately 20±5 kHz, with acceleration of up to approximately 1000 G or more. The resolution or position error is approximately 1 nm root mean square (RMS). In a preferred embodiment, the full stroke of 50 μm can be achieved up tol kHz operation.
摘要翻译：本发明的优选实施例涉及诸如快速工具伺服（FTS）的高带宽定位系统。本发明的应用包括例如具有用于批量生产用于亮度增强和受控反射率的膜的结构化表面的模具的金刚石车削，用于隐形眼镜的模具的金刚石车削和微型光学定位装置。快速工具伺服的优选实施例可以具有大约20±5kHz的闭环带宽，加速度高达约1000G或更大。分辨率或位置误差约为1 nm均方根（RMS）。在优选实施例中，50毫米的全行程可以在高达1千赫的操作下实现。

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