公开(公告)号：US5359904A

公开(公告)日：1994-11-01

申请号：US1315

申请日：1993-01-06

申请人： Mauri Luukkala

发明人： Mauri Luukkala

IPC分类号： G01L1/00 ,  G01L5/04 ,  G01L5/10 ,  G01N3/00

CPC分类号： G01L5/105 ,  G01L5/042

摘要： The invention relates to an on-line tension meter for an optic fiber. The tensile stress of a bare optic fiber is measured without contacting the optic fiber as the optic fiber is drawn in a draw machine. A loudspeaker causes a wire wave to be formed in the fiber. The fiber tension is then measured by the advancing speed of the wire wave. The speed is measured by means of two location-sensitive electro-optic indicators or cameras, the distance therebetween being known.

摘要翻译： 本发明涉及一种用于光纤的在线张力计。 当光纤在拉丝机中拉制时，测量裸光纤的拉伸应力而不接触光纤。 扬声器会在光纤中形成线波。 然后通过线波的前进速度测量纤维张力。 通过两个位置敏感的电光指示器或照相机测量速度，其间的距离是已知的。

公开(公告)号：US5251491A

公开(公告)日：1993-10-12

申请号：US766507

申请日：1991-09-27

申请人： Susumu Nakaoka ,  Sadao Kozuka ,  Tomoyuki Kurihara

发明人： Susumu Nakaoka ,  Sadao Kozuka ,  Tomoyuki Kurihara

IPC分类号： G01L5/04

CPC分类号： G01L5/042

摘要： A method of and apparatus for measuring a tension by the steps of vibrating a measured object of a line- or belt-shaped configuration by the flow of air from an air nozzle so that the measured object is resonated, counting the number of vibrations of the measured object per second by the radiation of a laser light emitted from a very small distance measuring device, and calculating a resonance frequency of the measured object from the number of the vibrations to thereby obtain a tension of the measured object.

公开(公告)号：US5228893A

公开(公告)日：1993-07-20

申请号：US799224

申请日：1991-11-27

申请人： David H. Smithgall ,  Alan T. Woodward

发明人： David H. Smithgall ,  Alan T. Woodward

IPC分类号： C03B37/025 ,  G01L5/04

CPC分类号： C03B37/0253 ,  G01L5/042 ,  C03B2205/40 ,  C03B2205/72 ,  Y10S65/13

摘要： As an optical fiber (12) is being drawn, air (14) is directed at a portion of the fiber as a succession of air pulses, the pulses having a frequency near the natural frequency of the fiber portion. The frequency of the air pulses is then varied over a range of frequencies that includes the natural frequency of the fiber portion. When the air pulse frequency equals the natural frequency of the fiber portion, a resonance occurs which greatly amplifies the amplitude of the vibration of the fiber portion. The large deflection of the fiber that occurs at resonance is easy to detect, and the air pulse frequency which causes such maximum deflection is taken as being equal to the resonant frequency and therefore to the natural frequency of the fiber portion. Changes of the detected resonant frequency can be interpreted in a straightforward manner as changes in optical fiber tension which, in turn, are used to make compensatory changes of the temperature of the furnace (10).

摘要翻译： 当抽出光纤（12）时，空气（14）作为一连串的空气脉冲被引导到光纤的一部分，脉冲的频率接近光纤部分的固有频率。 然后，空气脉冲的频率在包括光纤部分的固有频率的频率范围内变化。 当空气脉冲频率等于纤维部分的固有频率时，发生共振，这极大地放大了纤维部分振动的振幅。 在谐振时发生的纤维的大偏转易于检测，引起这种最大偏转的空气脉冲频率被认为等于谐振频率，因此等于纤维部分的固有频率。 检测到的谐振频率的变化可以以直接的方式被解释为光纤张力的变化，而光纤张力的变化又被用来对炉子（10）的温度进行补偿性的改变。

公开(公告)号：US4655093A

公开(公告)日：1987-04-07

申请号：US755459

申请日：1985-07-16

申请人： Valter E. Strom ,  Bo-Lennart I. Johansson ,  Hakan I. Karlsson ,  Thomas stman

发明人： Valter E. Strom ,  Bo-Lennart I. Johansson ,  Hakan I. Karlsson ,  Thomas stman

IPC分类号： B65H23/04 ,  G01L5/04 ,  G01H13/00

CPC分类号： B65H23/044 ,  G01L5/042 ,  Y10S73/01

摘要： Web tension measurement in that the web (5) is caused to oscillate transversely with the resonance frequency for the portion of the web (5) defined by a support (2,2a). The oscillations are measured by detectors (6,7) for determining the web tension. The measuring is carried out free of contact in that a thin air layer is maintained between the support (2,2a) and web (5).

摘要翻译： 卷筒纸张力测量使得卷筒纸（5）与由支撑件（2,2a）限定的卷筒纸（5）的部分的共振频率横向摆动。 通过用于确定幅材张力的检测器（6,7）测量振荡。 进行无接触的测量，因为在支撑体（2,2a）和腹板（5）之间保持薄的空气层。

公开(公告)号：US4599898A

公开(公告)日：1986-07-15

申请号：US657008

申请日：1984-10-02

申请人： Walter Beer

发明人： Walter Beer

IPC分类号： G01M7/02 ,  A63B60/42 ,  G01H17/00 ,  G01L5/04 ,  G01M5/00 ,  G01N29/00

CPC分类号： G01M5/005 ,  A63B60/42 ,  G01L5/042 ,  G01M5/0066

摘要： The quality of dynamic behavior of tennis rackets and/or selected parts of tennis rackets is ascertained by vibrating the rackets and by monitoring one or more parameters of vibratory movement which are indicative of the quality of the corresponding part of or the entire racket. The rackets and/or selected parts of the rackets can be vibrated at a constant or at a variable frequency for selected intervals of time. The parameter may constitute the slope of the curves denoting the phase of vibration, the frequency of vibration, the width of the resonance frequency of the selected part and/or others.

摘要翻译： 网球拍和/或网球拍选择部分的动态行为的质量通过振动球拍和监测振动运动的一个或多个参数来确定，该参数指示相应部分或整个球拍的质量。 球拍和/或球拍的选定部分可以在选定的时间间隔内以恒定或变化的频率振动。 该参数可以构成表示振动相位，振动频率，所选择的部件和/或其他谐振频率的宽度的曲线的斜率。

公开(公告)号：US4501642A

公开(公告)日：1985-02-26

申请号：US546993

申请日：1983-10-31

申请人： Henry A. Wells

发明人： Henry A. Wells

IPC分类号： B65H23/04 ,  B65H23/10 ,  D21G9/00 ,  G01L5/04 ,  G01N21/86 ,  D21F7/00 ,  G01V9/04

CPC分类号： D21G9/0036 ,  B65H23/044 ,  B65H23/105 ,  D21G9/0045 ,  G01L5/042 ,  G01N21/86

摘要： Method of paper tension control to maintain the frequency and amplitude of paper flutter. A noncontacting sensor means is mounted adjacent a portion of the paper path in a paper manufacturing apparatus. The sensor means detects flutter in a paper web travelling across the paper path. The tension in the paper web can be determined from the frequency and amplitude of the flutter. By adjusting the tension in the paper web to maintain the flutter within a predetermined range of frequency and amplitude, the tension in the paper web can be maintained at a desired level.

摘要翻译： 纸张张力控制方法保持纸张振动的频率和幅度。 非接触式传感器装置安装在造纸设备中邻近纸路径的一部分。 传感器装置检测在纸张路径上行进的纸幅中的颤动。 纸幅中的张力可以根据颤振的频率和幅度来确定。 通过调整纸幅中的张力以将颤动保持在预定的频率和幅度范围内，纸幅中的张力可以保持在期望的水平。

公开(公告)号：US4441367A

公开(公告)日：1984-04-10

申请号：US299234

申请日：1981-09-03

申请人： John W. Daws ,  Hugh W. Bradley, Jr. ,  Sheldon A. Canfield

发明人： John W. Daws ,  Hugh W. Bradley, Jr. ,  Sheldon A. Canfield

IPC分类号： G01H5/00 ,  G01L5/04 ,  G01L5/10

CPC分类号： G01H5/00 ,  G01L5/042

摘要： A frame for being seated upon the fabric carries first and second spaced apart sensors capable of detecting the leading front of an acceleration wave as it passes each sensor. The first and second sensors each have an output, responsive to the presence of the acceleration wave, which can be coupled to a timer for measuring the time of flight of the acceleration wave between the two sensors. The velocity of the acceleration wave being determined by dividing the time of flight by the distance separating the sensors. An acceleration wave generating mechanism may also be carried by the frame and can include a solenoid oriented so that its armature impacts the fabric perpendicular thereto. Preferably the solenoid is energized by a pulse controlled by a solenoid energizing circuit. A noise immunity circuit connected to the sensors aids in discriminating against noise and transients.

摘要翻译： 用于坐在织物上的框架承载第一和第二间隔开的传感器，其能够在通过每个传感器时检测加速度波的前方。 第一和第二传感器各自具有响应于加速度波的存在的输出，其可耦合到用于测量两个传感器之间的加速度波的飞行时间的计时器。 通过将飞行时间除以距离传感器的距离来确定加速度波的速度。 加速波发生机构也可以由框架承载，并且可以包括取向的电磁铁，使得其电枢使垂直于其的织物冲击。 优选地，螺线管由螺线管激励电路控制的脉冲通电。 连接到传感器的抗噪声电路有助于区分噪声和瞬变。

公开(公告)号：US4393725A

公开(公告)日：1983-07-19

申请号：US236966

申请日：1981-02-23

申请人： Larry S. Satterfield

发明人： Larry S. Satterfield

IPC分类号： B65H59/40 ,  G01H13/00 ,  G01L5/04 ,  G01L5/10

CPC分类号： G01L5/042 ,  B65H59/40 ,  G01H13/00 ,  B65H2511/52 ,  B65H2557/61 ,  B65H2701/31

摘要： Apparatus to cause a running length of yarn to vibrate at its harmonic frequency and to electronically measure the harmonic frequency thereof to provide a signal which can be employed to maintain and/or correct the parameters of the system to maintain a desired tension in the yarn being run.

摘要翻译： 使纱线的运行长度以其谐波频率振动并且电子地测量其谐波频率的装置，以提供可用于维持和/或校正系统的参数以维持纱线期望张力的信号 跑。

公开(公告)号：US4335603A

公开(公告)日：1982-06-22

申请号：US177722

申请日：1980-08-13

申请人： Stephen A. Locke

发明人： Stephen A. Locke

IPC分类号： G01L5/10 ,  G01L5/04 ,  G01N29/00

CPC分类号： G01L5/042

摘要： Tension in a moving web is measured by subjecting the web to an ultrasonic pulse train and measuring the time interval for the resultant transverse waves in the web to proceed a known distance past a point upstream (or downstream). The composite web plus wave velocity is calculated and the web travel time is added (or subtracted) to obtain wave velocity which is related to tension in accordance with the equation T=a.sup.2 w/g.sub.c, where T=web tension, a=wave velocity, w=mass per unit area and g.sub.c =lb mass ft/lb force sec.sup.2 conversion factor.

摘要翻译： 通过使幅材经受超声波脉冲串并测量网中产生的横波的时间间隔，通过上游（或下游）的点行进已知距离来测量移动幅材中的张力。 计算复合网加波速，并根据公式T = a2w / gc，添加（或减去）网路行进时间以获得与张力相关的波速，其中T =腹板张力，a =波速， w =单位面积质量，gc = lb质量ft / lb力sec2转换系数。

公开(公告)号：US4158962A

公开(公告)日：1979-06-26

申请号：US883300

申请日：1978-03-03

申请人： Paul Conoval

发明人： Paul Conoval

IPC分类号： G01L5/04 ,  G01L5/10

CPC分类号： G01L5/042 ,  Y10S73/01

摘要： A method and apparatus is provided for measuring tension in stressed cables in which use is made of the relationship between the tension and the natural frequency of vibration of the cable. An electrical signal is generated by sensing the fluctuating field of a small permanent magnet attached to the vibrating cable and generating from this signal a periodic pulse signal having an average level proportional to the square of the cable variation frequency. The resulting signal is scaled to produce a final signal which is directly proportional to cable tension.

摘要翻译： 提供了一种用于测量受力电缆中的张力的方法和装置，其中使用电缆的张力和固有振动频率之间的关系。 通过感测附接到振动电缆的小型永磁体的波动场产生电信号，并且从该信号产生具有与电缆变化频率的平方成比例的平均电平的周期性脉冲信号。 产生的信号被缩放以产生与电缆张力成正比的最终信号。