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公开(公告)号：EP0638791A3
公开(公告)日：1995-04-19
申请号：EP94305959.2
申请日：1994-08-11
发明人： Hazelden, Roger John
CPC分类号： G01L5/221 , G01L3/12 , G01L25/003
摘要： An improved torque sensor, or relative angular movement sensor, comprises an input member (5), an output member (2), LED light sources (20), a pair of photodetector units (28a,28b) adapted to receive light from the LED light sources, and signal processing means, in which said signal processing means is adapted to receive output signals from the photodetector units, the output signals of the photodetector units being dependent upon the light signals which they receive, and the signal processing means being adapted to process the output signals from the photodetector units so as to produce a modified output signal indicative of the relative angular displacement between, or torque applied between, the input and output member. The improvement comprises the provision of diagnostic means which continuously monitors a sum signal, Σ, which comprises the sum of the output signals from the photodetector units, and which detects any variation in the sum signal due to failure of the sensor.
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公开(公告)号：EP0578422A3
公开(公告)日：1994-03-23
申请号：EP93305072.6
申请日：1993-06-29
发明人： Sakai, Izumi
摘要： An apparatus for measuring torque in a member (3) comprises a photo-elastic sensor element (5) for attachment to the member (3), a source of radiation (S) for illuminating the sensor element (5) and a detector (D) sensitive to radiation received from the sensor element (5). The member (3) suffers torsional deformation when transmitting a torque. The deformation places a stress on the sensor element (5) and causes the polarisation of the radiation within the sensor element (5) to be altered. Intensity or changes in the spectral distribution of radiation are measured by the detector to provide an indication of the torque.
摘要翻译： 用于测量构件（3）中的扭矩的设备包括用于附接到构件（3）的光弹性传感器元件（5），用于照射传感器元件（5）的辐射源（S）和用于检测传感器元件 ）对从传感器元件（5）接收的辐射敏感。 传递扭矩时，构件（3）发生扭转变形。 该变形在传感器元件（5）上施加应力并且导致传感器元件（5）内的辐射的偏振改变。 检测器测量辐射光谱分布的强度或变化，以提供扭矩的指示。
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公开(公告)号：EP0578422A2
公开(公告)日：1994-01-12
申请号：EP93305072.6
申请日：1993-06-29
发明人： Sakai, Izumi
摘要： An apparatus for measuring torque in a member (3) comprises a photo-elastic sensor element (5) for attachment to the member (3), a source of radiation (S) for illuminating the sensor element (5) and a detector (D) sensitive to radiation received from the sensor element (5). The member (3) suffers torsional deformation when transmitting a torque. The deformation places a stress on the sensor element (5) and causes the polarisation of the radiation within the sensor element (5) to be altered. Intensity or changes in the spectral distribution of radiation are measured by the detector to provide an indication of the torque.
摘要翻译： 用于测量构件（3）中的扭矩的装置包括用于附接到构件（3）的光弹性传感器元件（5），用于照亮传感器元件（5）的辐射源（S）和检测器 ）对从传感器元件（5）接收的辐射敏感。 构件（3）在传递扭矩时会发生扭转变形。 变形在传感器元件（5）上施加应力，并且使传感器元件（5）内的辐射的偏振变化。 通过检测器测量辐射的光谱分布的强度或变化，以提供扭矩的指示。
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94.发明公开Optical torque sensors and steering systems for vehicles incorporating them 失效用于与其共同使用的车辆的光学扭矩传感器和转向系统
公开(公告)号：EP0555987A3
公开(公告)日：1993-11-10
申请号：EP93300792.4
申请日：1993-02-03
发明人： Hazelden, Roger John
摘要： A torque sensor, or a relative angular movement sensor, comprises an LED light source (20) mounted in a fixed position relative to a housing (14) and shines light through an associated fixed collimator plate (21), the light being detected by a pair of detectors (28a and 28b) also mounted fixed relative to the housing (14). Two masks (24 and 26) pass between the source and the detector, one of the masks being fixed to an input shaft (2) of the steering system (1) and the other being connected to the output shaft (5). Each of the masks has a first and second aperture (39, 39' and 40, 40') and the amount of light which is received by detectors (28a and 28b) depends upon the degree of overlap between associated pairs of apertures on the input and output masks. Signals from each of the detectors is fed to signal processing means (19) which divides the difference between the signals by their sum so as to provide a signal indicative of differential torque between the input and output shafts. This signal is substantially independent of the intensity of the light source which allows it to compensate for ageing effects in the light source. The signal also shows a positive value for turning of the input shaft in one direction and a negative value for turning the input shaft in the opposite direction. The torque sensor can be used to obtain the torque, relative change of steering angle, and steering angle itself, which can all be passed to a vehicle ride or braking control system.
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公开(公告)号：EP0345093A2
公开(公告)日：1989-12-06
申请号：EP89305608.5
申请日：1989-06-02
CPC分类号： G01B11/168 , G01D5/345 , G01L3/12 , G01P3/36 , G01P3/56
摘要： Apparatus is described for measuring torsional displacement between ends 32 and 35 of a hollow rotating shaft 28. Polarised light from the source 12 enters the shaft through apertures 30 and is reflected by a mirror 34 to a retardation plate 38. Plate 38 has a fast axis 42 positioned at an angle A relative to the plane of polarisation 46 of the light when the shaft is positioned with one of the pairs of apertures 30 in alignment with the received light beam 24. The retardation plate produces 0 degree and 90 degree components from the light whose relative intensities depend on any torsional displacement between end 35 of the shaft and end 32. The components are reflected by a mirror 40 and a mirror 34 to a beam splitter 20. A polarisation splitter 54 separates the 0 degree and 90 degree components which are respectively detected by detectors 58 and 62 and their relative intensities measured to determine the torsional displacement.
摘要翻译： 描述了用于测量中空旋转轴28的端部32和35之间的扭转位移的装置。来自源12的偏振光通过孔30进入轴，并被反射镜34反射到相位差板38.板38具有快轴 当所述轴定位成与所述成对的孔30中的一个与所述接收的光束24对准时，所述相对于所述光的偏振面46相对于所述光的平面46成角度A.所述相位差板从所述光 光的相对强度取决于轴的端部35和端部32之间的任何扭转位移。部件被反射镜40和反射镜34反射到分束器20.偏振分离器54分离0度和90度分量， 分别由检测器58和62检测并测量其相对强度以确定扭转位移。
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公开(公告)号：EP0185619A2
公开(公告)日：1986-06-25
申请号：EP85810597.6
申请日：1985-12-16
发明人： Renner, G. Frederick , Atterbury, William G. , Hartman, Nile F. , Thatcher, Richard K. , Harris, Jeremy M. , McCown, Robert B.
摘要： Typical apparatus as shown in Figures 1 and 12 for indicating the relative positions in a given direction between a reference point (24, 59) and a test point (29, 68) spaced therefrom and movable relative thereto is useful for measurement of the magnitude and direction of static or dynamic torque in a shaft (8). Overlapping transparent reference (20, 60) and test surfaces (25, 61), either parallel disks (60, 61) or coaxial cylinders (25, 25) each having a relevant portion covered with a plurality of equally spaced lines oriented predominatly normal to the given direction and at an angle to each other, produce moire fringes (30) when illuminated (14, 15). One of the surfaces (25, 61), being flexible, is connected to the shaft (8) so as to flex in response to torque between the reference point (24, 59) and the test point (29, 68), causing a change in the angle between the lines on the two surfaces (20, 25; 60, 61), and thus of the spacing (D) (Figure 3) of the moire fringe bands (30), which is optically detected (17) and converted, as shown in Figure 4, to an electrical signal (42) to control power applied to the shaft (8).
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公开(公告)号：EP4246111A1
公开(公告)日：2023-09-20
申请号：EP23161824.0
申请日：2023-03-14
申请人： Lasagni, Matteo
发明人： Lasagni, Matteo
摘要： Die Erfindung betrifft eine Messvorrichtung (1) zum Messen eines Drehmomentes um eine Achse (2) in einem elastischen Verbindungselement (3) welches ein erstes Element (4) mit einem zweiten Element (5) drehfest um die Achse (2) verbindet, umfassend eine Lichtquelle (6), mindestens einen Spiegel und einen Licht-Sensorarray (7). Erfindungsgemäß ist vorgesehen, dass ein erster Spiegel (8) und ein zweiter Spiegel (9) derart angeordnet sind, dass der erste Spiegel (8) mit dem ersten Element (4) und der zweite Spiegel (9) mit dem zweiten Element (5) starr verbunden sind, wobei mit der Lichtquelle (6) ein Lichtstrahl (10) erzeugt werden kann, der vom ersten Spiegel (8) und vom zweiten Spiegel (9) zumindest einmal reflektiert wird und letztlich auf das Licht-Sensorarray (7) trifft und der Auftreffpunkt des Lichtstrahls (10) im Licht-Sensorarray (7) abhängig vom Drehmoment ist .Mit einer derartigen Vorrichtung können nun auch geringste durch ein Drehmoment verursachte Verdrehwinkel gemessen werden.
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98.发明公开
公开(公告)号：EP4194802A1
公开(公告)日：2023-06-14
申请号：EP22210147.9
申请日：2022-11-29
摘要： Die vorliegende Erfindung betrifft eine Sensoranordnung zum Erfassen mindestens einer ersten Torsion (φ 1 ) eines Rotorblatts (1) einer Windkraftanlage. Die Sensoranordnung umfasst eine erste Lichtquelle (12.1), einen ersten sendeseitigen Polarisator (14.1), ein erstes und zweites Detektorelement (24.1, 24.2) und einen ersten und zweiten empfangsseitigen Polarisator (22.1, 22.2). Der erste sendeseitige Polarisator (14.1) dient zum Erzeugen von linear polarisiertem Licht als erstes Sendelicht (13.1). Eine Orientierung einer Polarisationsebene des ersten empfangsseitigen Polarisators (22.1) und eine Orientierung einer Polarisationsebene des zweiten empfangsseitigen Polarisators (22.2) sind voneinander verschieden. Die Sensoranordnung weist eine zweite Lichtquelle (12.2) zum Erzeugen von unpolarisiertem Licht als zweites Sendelicht (13.2) auf.
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99.发明授权
公开(公告)号：EP3707486B1
公开(公告)日：2023-02-22
申请号：EP18793398.1
申请日：2018-10-23
发明人： WENSKE, Jan , ZHANG, Hongkun
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公开(公告)号：EP4050311A1
公开(公告)日：2022-08-31
申请号：EP19949823.9
申请日：2019-10-24
发明人： ZHAO Fei , TOMA Kumiko , SOGA Takehito , SADAKANE Kenichi , YOSHIDA Yasushi
摘要： [Problem] To provide a torque sensor that can be miniaturized, a robot, and a torque computation method.
[Solution] A torque sensor 1 includes a strain body 3 and optical sensors OS1-OS4 for detecting the deformation of the strain body 3. The strain body 3 includes a ringshaped outer peripheral part 5, and an inner peripheral part 7 at least a portion of which is disposed radially inward of the outer peripheral part 5. The optical sensors OS1-OS4 include: scales SC1-SC4 that are fixed to the inner peripheral part 7, and that are disposed in between the outer peripheral part 5 and the inner peripheral part 7; and detection units D1-D4 that are fixed to the outer peripheral part 5, and that are disposed so as to face the scales SC1-SC4 in between the outer peripheral part 5 and the inner peripheral part 7.
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