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1.发明公开公开(公告)号：US20240247987A1
公开(公告)日：2024-07-25
申请号：US18394255
申请日：2023-12-22
Applicant: Proterial, Ltd.
Inventor： Takashi ONIMOTO , Kei KAWANO , Akitoshi FUJIMORI
IPC: G01L3/10
CPC classification number: G01L3/102
Abstract: A magnetostrictive torque sensor that is configured to be attached around a rotating shaft exhibiting a magnetostrictive effect and detects torque transmitted by the rotating shaft in a predetermined operating temperature range. The magnetostrictive torque sensor is provided with a molded resin body including a cylinder portion with a hollow cavity in a center through which the rotating shaft is inserted, a flexible substrate that is wrapped around an outer circumference of the cylinder portion of the molded resin body and includes a plurality of detection coils composed of a wiring pattern, a cylindrical magnetic ring that houses the flexible substrate between the magnetic ring and the cylinder portion, and a filler composed of a curable resin filled between the cylinder portion, the flexible substrate, and the magnetic ring. A linear expansion coefficient of the molded resin body is higher than a linear expansion coefficient of the magnetic ring, and the filler is cured in a state in which temperatures of the cylinder portion, the flexible substrate, and the magnetic ring are elevated to higher than an upper limit temperature of the operating temperature range.
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公开(公告)号：US12025521B2
公开(公告)日：2024-07-02
申请号：US17503189
申请日：2021-10-15
Applicant: BRP Megatech Industries Inc.
Inventor： Jean-Francois Veillette , Serge Kaldany
CPC classification number: G01L3/102 , G01L5/221 , G01R33/072 , H10N35/101
Abstract: A torque sensor including a shaft that receives an applied torque is disclosed. The shaft includes a magnetoelastic region that generates a non-negligible magnetic field responsive to the applied torque and null regions that generate a negligible magnetic field. The torque sensor includes null region sensors that generate a null region magnetic field measure corresponding to an ambient magnetic field. The torque sensor includes a magnetoelastic region sensor that generates a magnetoelastic region magnetic field measure corresponding to the ambient magnetic field and the non-negligible magnetic field. The torque sensor includes a controller that determines whether a null region sensor has entered an intense ambient magnetic field condition and whether a magnetoelastic region sensor has entered a magnetoelastic region sensor saturation condition. The controller also calculates a magnitude of the applied torque based on the null region magnetic field measures and the magnetoelastic region magnetic field measure.
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公开(公告)号：US20240065112A1
公开(公告)日：2024-02-22
申请号：US18453419
申请日：2023-08-22
Applicant: Melexis Technologies SA
Inventor： Appo VAN DER WIEL
Abstract: A wafer-level packaged magnetic sensor device includes: a first semiconductor substrate having a processing circuit configured for receiving a plurality of sensor signals, and for determining at least one difference signal, and for providing an output signal derived from said difference signal. A plurality of sensor substrates include a second semiconductor substrate with a first magnetic sensor, and a third semiconductor substrate with a second magnetic sensor the first semiconductor substrate being arranged at a location between the plurality of sensor substrates. The substrates are electrically connected by means of at least one redistribution layer.
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公开(公告)号：US20230280221A1
公开(公告)日：2023-09-07
申请号：US18115294
申请日：2023-02-28
Applicant: NSK LTD. , Proterial, Ltd.
Inventor： Masahiro KOBAYASHI , Kota FUKUDA , Takahiro ODERA , Naoki FUTAKUCHI
IPC: G01L3/10
Abstract: A torque measuring device includes a bridge circuit in which four detection coils arranged around a magnetostrictive effect section of a rotating shaft are arranged on four sides; and the bridge circuit includes a resistance element connected to at least one of the four sides for adjusting a resistance value of the side.
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公开(公告)号：US20190219458A1
公开(公告)日：2019-07-18
申请号：US16330282
申请日：2017-08-30
Applicant: Torque And More GmbH
Inventor： Lutz MAY
IPC: G01L1/12 , H01F27/28 , G01L3/10 , G01R33/038
Abstract: A force measurement device includes a flux concentrator with first, second, third, and fourth poles, a magnetic field generating unit generating a magnetic field applied to a test object, and a magnetic field sensing unit with first, second, third, and fourth magnetic field sensors. The flux concentrator is arranged such that each of its poles concentrates the magnetic field. The first, second, third, and fourth poles are arranged such that they form a quadrangle. A first recess is provided such that the first pole is spaced apart from the second and third poles is spaced apart from the fourth pole. A second recess is provided such that the first pole is spaced apart from the third and second poles is spaced apart from the fourth pole. The magnetic field sensors are arranged opposite to each other with the flux concentrator in between and such that the first and third magnetic field sensors both face the first recess and the second and fourth magnetic field sensors both face the second recess. The magnetic field sensing unit provides a signal as an indicator for a force applied to the test object.
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Patent Agency Ranking
公开(公告)号：US20190187008A1
公开(公告)日：2019-06-20
申请号：US16320846
申请日：2017-07-25
Applicant: Trafag AG
Inventor： Christoph Schanz , Dieter Zeisel
CPC classification number: G01L1/127 , B29C45/14819 , B29L2031/3425 , G01L1/125 , G01L3/102 , G01L3/105 , H01L41/125
Abstract: In order to enable practical suitability of a force or torque sensor and usability for a variety of applications in conjunction with cost-effective production, the invention provides a sensor head (10) for a magnetoelastic force or torque sensor for measuring a force or a torque in a ferromagnetic body (9), comprising: a magnetic field generating unit (14) for generating a magnetic field in the ferromagnetic body (9) and a magnetic field measuring unit (16) for measuring a magnetic field change in the ferromagnetic body (9), wherein the magnetic field generating unit (14) has an excitation coils (18) and a soft-magnetic excitation flux amplifying element (20), wherein the magnetic field measuring unit (16) has a plurality of measurement coil (22) with a soft-magnetic measurement flux amplifying element (24), wherein at least the excitation coil (18) and the measurement coils (22, 22a-22d) are integrated in a common integrated component, such as, in particular, a printed circuit board element (26) and/or MEMS component (28).
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公开(公告)号：US20190017888A1
公开(公告)日：2019-01-17
申请号：US15648422
申请日：2017-07-12
Applicant: General Electric Company
Inventor： Dan Tho Lu , Pekka Tapani Sipila
CPC classification number: G01L3/105 , G01L3/102 , G01L5/221 , G01L5/228 , G01L25/003
Abstract: A temperature compensated torque sensing system and methods for using the same are provided. The system can include a sensor head in electrical communication with a controller. The sensor head can contain a torque sensor including a core, a driving coil and a sensing coil. The sensor head can also include a temperature sensor coupled to the sensor head. The torque sensor can be configured to measure torque applied to a selected portion of a target based upon magnetic flux passing through the target, while the temperature sensor can be configured to concurrently measure the target temperature. The temperature sensor can be positioned for avoiding interference with sensed magnetic flux. The controller can adjust the determined torque using the temperature measurements to compensate for changes in magnetic properties of the target due to variation in target temperature. In this manner, the accuracy of the torque measurements can be increased.
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8.发明申请公开(公告)号：US20180340851A1
公开(公告)日：2018-11-29
申请号：US16057133
申请日：2018-08-07
Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
Inventor： Stephan Neuschaefer-Rube
CPC classification number: G01L3/102 , G01B7/20 , G01L1/125 , G01L5/16 , H05K1/0283 , H05K1/111 , H05K1/189
Abstract: The present invention relates to a method and an arrangement for measuring a force and/or moment on a machine element extending along an axis, using the inverse magnetostrictive effect. The machine element has a magnetization region for magnetization, this region fully encompassing the axis. The arrangement includes at least one first magnetic sensor and one second magnetic sensor, each being designed to measure individually a first and a second direction component of a magnetic field that is caused by the magnetization and by the force and/or the moment. The direction components that can be measured using the first magnetic sensor have differing orientations. Likewise, the direction components that can be measured using the second magnetic sensor have differing orientations. The first magnetic sensor and the second magnetic sensor are arranged around the axis at different peripheral positions.
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公开(公告)号：US09989429B2
公开(公告)日：2018-06-05
申请号：US15108688
申请日：2014-12-18
Applicant: Schaeffler Technologies AG & Co. KG
Inventor： Jan Matysik , Christian Mock , Stephan Neuschaefer-Rube
CPC classification number: G01L3/103 , G01L1/125 , G01L3/102 , G01L3/104 , G01L3/105 , G01L5/0061 , G01L25/003
Abstract: The present invention relates to an arrangement for measuring a force and/or a torque on a machine element extending in an axis, using the inverse magnetostrictive effect. The machine element has at least one permanent magnetization. The permanent magnetization extends along a closed magnetization path. The magnetization path runs preferably at least partially along the surface of the machine element. The arrangement further includes at least one magnetic field sensor which is arranged opposite the machine element. The magnetic field sensor serves to determine a magnetic field and is designed to measure at least one vector component of a magnetic field coming from the machine element, which field is produced on the one hand by the permanent magnetization and on the other hand by the force and/or by the torque. According to the invention, the orientation of the permanent magnetization relative to the axis changes along the magnetization path.
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公开(公告)号：US20180148820A1
公开(公告)日：2018-05-31
申请号：US15575041
申请日：2016-03-22
Applicant: NAKAYAMA AMORPHOUS CO., LTD.
Inventor： Masahiro KOMAKI , Hironobu TSUTANO , Takumi YOSHIDA
CPC classification number: C23C4/129 , B23Q7/1426 , B23Q7/1463 , B65D2519/00004 , B65D2519/00293 , C23C4/08 , G01L3/102 , H01L41/12 , H01L41/47 , Y10T29/42 , Y10T29/49075 , Y10T29/5124 , Y10T29/5128 , Y10T29/5196
Abstract: The invention provides equipment for manufacturing a torque sensor shaft by forming a magnetostrictive region including a metallic glass coating in a predetermined pattern on a side face of a shaft-shaped workpiece. The shaft-shaped workpiece is rotatably attached on a conveying pallet. The conveying pallet is successively conveyed to each of work devices including a preheating device for the shaft-shaped workpiece, a thermal spraying device for forming a metallic glass coating on a side face of the shaft-shaped workpiece, a masking device configured to provide a covering corresponding to the pattern on the coating, and a shot blasting device configured to provide shot blasting directed toward the metallic glass coating including the covering. Preheating, thermal spraying, masking, and shot blasting are performed respectively on the shaft-shaped workpiece while rotating the shaft-shaped workpiece on the conveying pallet at each of the work devices. Therefore, the favorable manufacturing equipment can be provided.
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