公开(公告)号：US4758065A

公开(公告)日：1988-07-19

申请号：US709563

申请日：1985-03-08

申请人： Richard A. Dorman ,  Gregory Hull-Allen

发明人： Richard A. Dorman ,  Gregory Hull-Allen

IPC分类号： G01D5/26 ,  G02B23/26

CPC分类号： G01D5/268

摘要： A fiber optic sensor probe system comprises an electromechanical arrangement system which enables a fiber optic probe to lock onto a null point relative to a target which null point represents an in focus condition for the probe relative to the target. A servomechanism feedback circuit maintains the probe in an in focus condition relative to the target if the target moves. A dithering motion is provided to the probe such that, when the electrical output of the probe has a frequency component which is the same frequency as that of the dither, an out of focus condition of the probe relative to the target exists and the servomechanism feedback system operates to correct it. A monochromatic light source is used to eliminate the problem of different spectral components of light having slightly different focal lengths. A second dither or oscillation of the servomechanism's motor drive voltage causes the motor to oscillate and thus enables it to avoid becoming stuck by static friction, therefore enabling the system to achieve its proper null point. Finally, the geometry of the probe is such that the lens face is not parallel to the target, so that flat regions in the area of the null response point of the output curve of the probe which might cause the probe to hunt excessively for the null point are eliminated.

摘要翻译： 光纤传感器探针系统包括机电布置系统，其使得光纤探针能够相对于目标锁定到零点上，该空点表示探针相对于目标的聚焦状态。 如果目标移动，伺服机构反馈电路将探针保持在相对于目标的聚焦状态。 向探针提供抖动运动，使得当探针的电输出具有与抖动的频率分量相同的频率分量时，探针相对于目标的焦距偏离条件存在，并且伺服机构反馈 系统操作来纠正它。 单色光源用于消除具有稍微不同焦距的光的不同光谱分量的问题。 伺服机构的电动机驱动电压的第二次抖动或振荡导致电动机振荡，从而使其能够避免被静摩擦阻塞，从而使系统能够实现其正确的零点。 最后，探头的几何形状使得透镜面不平行于目标，使得探头输出曲线的零点响应点区域中的平坦区域可能导致探头过度追踪零点 点消除。

公开(公告)号：US4674882A

公开(公告)日：1987-06-23

申请号：US709582

申请日：1985-03-08

申请人： Richard A. Dorman ,  Curtis D. Kissinger ,  Leo Hoogenboom ,  Gregory Hull-Allen ,  Samuel Fallek

发明人： Richard A. Dorman ,  Curtis D. Kissinger ,  Leo Hoogenboom ,  Gregory Hull-Allen ,  Samuel Fallek

IPC分类号： G01B11/02 ,  G01B11/14

CPC分类号： G01B11/026

摘要： A displacement measuring instrument for measuring the displacement of a target including in combination a fiber optic lens assembly including means for maintaining said assembly in space relation with said target, dither means for vibrating said assembly toward and away from said target about the lens null along the axis of said assembly, first electronic means for providing a first output voltage proportional to displacement of said assembly from said target, second electronic means cancelling that portion of said first output voltage resulting from displacement due to said dither means and providing a second voltage resulting from displacement due to means other than said dither means, servo means receiving said second output voltage and moving said assembly with respect to said target to null said second output voltage and measurement means measuring the movement of said servo means.

摘要翻译： 一种用于测量目标的位移的位移测量仪器，包括组合的光纤透镜组件，所述光纤透镜组件包括用于将所述组件保持与所述目标物处于空间关系的装置，所述抖动装置用于使所述组件朝向和离开所述目标绕着所述透镜零点沿着 所述组件的第一电子装置，用于提供与所述组件从所述目标的位移成比例的第一输出电压的第一电子装置，第二电子装置抵消由于所述抖动装置引起的位移而产生的所述第一输出电压的那部分，并且提供由 由伺服装置接收所述第二输出电压并相对于所述目标移动所述组件的位移是零，所述第二输出电压和测量装置测量所述伺服装置的运动。

公开(公告)号：US4711577A

公开(公告)日：1987-12-08

申请号：US49005

申请日：1987-05-07

申请人： Gregory Hull-Allen

发明人： Gregory Hull-Allen

IPC分类号： G01B11/02 ,  G01B11/14

CPC分类号： G01B11/026

摘要： A method of determining the displacement of a fiber optic sensor from a target in which a first lens is spaced from the target at a first distance an a second lens is spaced from said target at a second distance which provides the greatest intensity response at said first distance and thereafter spacing said first lens from said second lens to provide symmetrical slope values of response.

摘要翻译： 一种确定光纤传感器与目标的位移的方法，其中第一透镜在第一距离处与目标物间隔开，第二透镜在第二距离处与所述目标物间隔开，第二距离在所述第一距离处提供最大的强度响应 距离，然后将所述第一透镜与所述第二透镜间隔开以提供对称的响应斜率值。

公开(公告)号：USRE33078E

公开(公告)日：1989-10-03

申请号：US195493

申请日：1988-05-18

申请人： Gregory Hull-Allen

发明人： Gregory Hull-Allen

IPC分类号： G01B11/02

CPC分类号： G01B11/026

摘要： A method of determining the displacement of a fiber optic sensor from a target in which a first lens is spaced from the target at a first distance an a second lens is spaced from said target at a second distance which provides the greatest intensity response at said first distance and thereafter spacing said first lens from said second lens to provide symmetrical slope values of response.