公开(公告)号：US06412329B1

公开(公告)日：2002-07-02

申请号：US09352957

申请日：1999-07-14

申请人： Kenneth C-H Nai

发明人： Kenneth C-H Nai

IPC分类号： G01P2100

CPC分类号： G05B19/19 ,  G01B21/045 ,  G05B19/404 ,  G05B2219/37432 ,  G05B2219/41128 ,  G05B2219/42077

摘要： A coordinate measuring machine (CMM) carries a probe and is controlled by a controller to drive the probe to take measurements on a workpiece. In order to reduce the effects of acceleration-induced deflections of the probe on the measurements made by the machine, accelerometers are provided to measure the accelerations of the probe and to produce signals indicative thereof. The acceleration signals (45) are passed to the controller (FIG. 2) where they are integrated (46) and filtered (48) before being passed as velocity signals (49) to a summing junction (50) from which they are fed to a velocity feedback control loop (34,35,36,37) which reduces any changes in the velocity (and hence deflection) of the probe due to the accelerations.

摘要翻译： 坐标测量机（CMM）携带探头，由控制器控制，以驱动探头对工件进行测量。 为了减少加速度引起的探头偏转对机器测量的影响，提供了加速度计来测量探头的加速度并产生指示其的信号。 加速度信号（45）被传递到控制器（图2），在那里它们被集成（46）并被过滤（48），然后作为速度信号（49）被传递给它们被馈送到的加法结（50） 速度反馈控制回路（34,35,36,37），其减少由于加速度引起的探头的速度（和因此的偏转）的任何变化。

公开(公告)号：US06568242B2

公开(公告)日：2003-05-27

申请号：US10092520

申请日：2002-03-08

申请人： Kenneth C-H Nai

发明人： Kenneth C-H Nai

IPC分类号： G01B2104

CPC分类号： G05B19/19 ,  G01B21/045 ,  G05B19/404 ,  G05B2219/37432 ,  G05B2219/41128 ,  G05B2219/42077

摘要： A coordinate measuring machine (CMM) carries a probe and is controlled by a controller to drive the probe to take measurements on a workpiece. In order to reduce the effects of acceleration-induced deflections of the probe on the measurements made by the machine, accelerometers are provided to measure the accelerations of the probe and to produce signals indicative thereof. The acceleration signals (45) are passed to the controller (FIG. 2) where they are integrated (46) and filtered (48) before being passed as velocity signals (49) to a summing junction (50) from which they are fed to a velocity feedback control loop[ (34, 35, 36, 37) which reduces any changes in the velocity (and hence deflection) of the probe due to the accelerations.

摘要翻译： 坐标测量机（CMM）携带探头，由控制器控制，以驱动探头对工件进行测量。 为了减少加速度引起的探头偏转对机器测量的影响，提供了加速度计来测量探头的加速度并产生指示其的信号。 加速度信号（45）被传递到控制器（图2），在那里它们被集成（46）并被过滤（48），然后作为速度信号（49）被传递给它们被馈送到的加法结（50） 速度反馈控制回路[（34,35,36,37）），其减少了由于加速度引起的探头的速度（和因此的偏转）的任何变化。

公开(公告)号：US06633143B2

公开(公告)日：2003-10-14

申请号：US09936919

申请日：2001-09-28

申请人： Nicholas J. Weston ,  Kenneth C-H Nai ,  Geoff McFarland ,  David R McMurtry

发明人： Nicholas J. Weston ,  Kenneth C-H Nai ,  Geoff McFarland ,  David R McMurtry

IPC分类号： H02P154

CPC分类号： G01B5/008 ,  H02K16/025 ,  Y10T74/18664 ,  Y10T74/1876

摘要： An articulating probe head includes motors 12 and 18 for driving respective output shafts 14 and 20 about respective orthogonal axes z and x to move a stylus 22 over the surface of a workpiece under the control of a controller 26. At least one of the motors is inertia balanced by mounting the stator 32 of the motor on bearings 42 to allow it to rotate in opposition to the rotation of the rotor 34. Control of the speed of the spinning stator is achieved by connecting it to the winding assembly 46 of an additional “back-to-earth” motor 47 the magnet assembly 48 of which is connected to the housing. The motor 47 acts as a brake to prevent overspeeding of the rotatable stator, and can have power supplied to it to ensure that the stator does not slow down excessively when the main motor is running at constant angular velocity. Control of the power supply to the motors is achieved by the controller 26.

摘要翻译： 铰接式探头包括用于驱动各输出轴的电动机 12 和 18 和 20 关于相应的正交轴z和x在工件表面上移动触笔 22 在控制器 26 的控制下。 通过在 42 的轴承上安装电机的定子 32 ，至少有一个电机是惯性平衡的， 与转子 34 的旋转相对旋转。 通过将其连接到额外的“背对背”电机 47的绕组组件 46 来实现旋转定子的速度控制。 / BOLD> 磁体组件 48 连接到外壳。 马达 47 用作制动器，以防止可旋转定子的超速，并且可以向其供电，以确保定子在主电机是 以恒定的角速度运行。 通过控制器 26实现对电机的电源的控制。