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1. 发明授权

US06934641B2 Motion detection and analysis 失效
标题翻译：运动检测和分析
公开(公告)号：US06934641B2
公开(公告)日：2005-08-23
申请号：US10608619
申请日：2003-06-30
申请人： Mark A. Chapman , Raymond J. Chaney , Sergey Loukianov , Seamus McFadden
发明人： Mark A. Chapman , Raymond J. Chaney , Sergey Loukianov , Seamus McFadden
IPC分类号： G01D5/245 , G01D5/347 , G01D5/36 , G06F15/00
CPC分类号： G01D5/2451 , G01D5/347 , G01D5/36
摘要： In order to determine movements of two subjects, two or more signals of different phase are obtained which depend on the movement, and processed by locating constellation status of the signals in at least one co-ordinate axis system, it must have at least six separate segments rotationally displaced. Where there are two or more co-ordinate axis systems, each must have an axis radiating from an origin. The change in the constellation states is monitored using at least two processed data samples obtained by sampling the signals at a suitable clock rate. It is possible to derive a prediction of values of the signal and filter the signals in dependence on the prediction. The second co-ordinate axis system may be rotatable relative to the first co-ordinate axis system enabling the provision of a movable region of uncertainty.
摘要翻译：为了确定两个主体的移动，获得取决于移动的两个或更多个不同相位的信号，并且通过将信号的星座状态定位在至少一个坐标轴系统中来处理，它必须具有至少六个单独的片段旋转移位。在有两个或更多个坐标轴系的地方，每个轴系必须具有从原点辐射的轴。使用通过以合适的时钟速率对信号进行采样而获得的至少两个处理的数据样本来监视星座状态的变化。可以导出信号值的预测，并根据预测对信号进行滤波。第二坐标轴系可以相对于第一坐标轴系统是可旋转的，从而能够提供不确定性的可移动区域。

2. 发明授权

US5975744A Real-time compensation system and method 失效
标题翻译：实时补偿制度和方法
公开(公告)号：US5975744A
公开(公告)日：1999-11-02
申请号：US680031
申请日：1996-07-15
申请人： Seamus McFadden , Raymond J Chaney
发明人： Seamus McFadden , Raymond J Chaney
IPC分类号： G01P3/36 , G01B9/02 , G01B11/00 , G01D3/00 , G05B19/404 , G06F19/00
CPC分类号： G05B19/404
摘要： A laser interferometer measuring system generates a series of digital output quadrature pulses corresponding to movement of a retroreflector 18. The output pulses are intended for receipt by a master counter containing an incremental count corresponding to displacement of the retroreflector 18. Errors present in the output pulses due to environmental or geometrical error sources in the interferometer may be compensated for by scaling the output pulses in accordance with a correction factor K. The output pulses are stored in a first counter 30, 130; a series of secondary pulses, being either the output pulses as scaled, or independently generated by a signal generator 200, are sent both to the master counter and a second counter 80, 180. A processor 50, 150 continually monitors the value of the second counter, and compares this with an actual value of displacement, equal to the product of the correction factor and the instantaneous value of the first counter. The frequency of secondary pulses transmitted to the master counter and the second counter is continually controlled by the processor in order to equalize the value of the second counter with the actual displacement value.
摘要翻译：激光干涉仪测量系统产生对应于后向反射器18的运动的一系列数字输出正交脉冲。输出脉冲用于由包含对应于后向反射器18的位移的增量计数的主计数器接收。输出脉冲中存在的错误由于干涉仪中的环境或几何误差源可以通过根据校正因子K对输出脉冲进行缩放来补偿。输出脉冲存储在第一计数器30,130中; 作为缩放的输出脉冲或由信号发生器200独立地产生的一系列次级脉冲被发送到主计数器和第二计数器80,180。处理器50,150连续监视第二个脉冲的值计数器，并将其与实际的位移值进行比较，等于校正因子与第一个计数器的瞬时值的乘积。发送到主计数器和第二计数器的二次脉冲的频率由处理器持续控制，以便将第二计数器的值与实际位移值相等。

3. 发明授权

US5259120A Calibration and measurement device 失效
标题翻译：校准和测量装置
公开(公告)号：US5259120A
公开(公告)日：1993-11-09
申请号：US915308
申请日：1992-07-20
申请人： Mark A. V. Chapman , Seamus McFadden , Marcus J. Eales , Andrew M. Bailey
发明人： Mark A. V. Chapman , Seamus McFadden , Marcus J. Eales , Andrew M. Bailey
IPC分类号： G01B5/00 , G01B5/008 , G01B5/20 , G01B21/04 , G01B5/03
CPC分类号： G01B21/042 , G05B2219/37101
摘要： A ball-bar 26 for calibrating machine tools and coordinate measuring machines comprise a unit 30 containing a displacement transducer 34 for measuring axial displacement of a precision ball 28. The ball 28 is pivotably located on the head or spindle 12 of the machine, which is driven in a circle about a ball 22 mounted on the bed or table 10 of the machine at the other end of the ball-bar in order to perform a calibration. The ball-bar has a modular construction, its various components such as the unit 30, extension bar 40, magnetic sockets 24,29, supporting device 14 and magnetic clamp 16 being connected together via M6 screw-threads, e.g. at 18,42,44. This enables the unit 30 to be connected to the various other components in a variety of configurations, e.g. for use as an electronic dial gauge.

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