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41. 发明授权

US10428678B2 Device of a turbomachine for actuating a setting device and turbomachine with such a device 有权
公开(公告)号：US10428678B2
公开(公告)日：2019-10-01
申请号：US15673102
申请日：2017-08-09
申请人： Rolls-Royce Deutschland Ltd & Co KG
发明人： Predrag Todorovic
IPC分类号： F01D17/14 , F16H19/04 , F16H21/44 , F16H33/20 , F16K31/54 , G01D5/22 , F01D17/10 , F01D17/20 , F16K1/20 , F01D11/24
摘要： A device of a turbomachine actuates a setting device to vary a flow cross-section of a flow channel of the turbomachine passable by a fluid flow. The device includes a displacement mechanism having an adjustable actuation appliance and couplable with the setting device, and a drive device for displacing the actuation appliance. The displacement mechanism has a centrifugal force appliance displaceable between a basic position and a maximally displaced working position depending on a number of revolutions of the drive device, wherein the actuation appliance is displaceable depending on the position of the centrifugal force appliance with respect to the drive device. A reset device applies a force to the centrifugal force appliance by which the centrifugal force appliance is pressed in the direction of its basic position.

42. 发明授权

US10408642B2 Duty cycle modulation for inductive position sensors 有权
公开(公告)号：US10408642B2
公开(公告)日：2019-09-10
申请号：US15802202
申请日：2017-11-02
申请人： KSR IP Holdings, LLC
发明人： Ryan W. Elliott
IPC分类号： G01D5/22 , G01D5/20 , H02J1/00 , H04B1/00 , G06F1/00
摘要： A duty cycle is used in conjunction with a powered oscillator to electronically reduce the current draw by reducing the average tail current and thus reducing the sensor radiated emissions without altering an inductive position sensor. The duty cycle enables an on and an off cycling without altering the hardware but providing the improvements.

43. 发明授权

US10408641B2 Measurement system 有权
公开(公告)号：US10408641B2
公开(公告)日：2019-09-10
申请号：US14528886
申请日：2014-10-30
申请人： CAMERON INTERNATIONAL CORPORATION
发明人： Edward C. Gaude
IPC分类号： E21B33/064 , F15B1/24 , G01D5/20 , E21B33/035 , E21B17/01 , G01F22/00 , G01D5/22
摘要： A system for determining the location of a movable element within a container is provided in which a linear variable differential transformer (“LVDT”) is formed with the container and the movable element therein. The LVDT includes a coil assembly including a primary or excitation winding, a secondary or output winding, and a movable element or core that is magnetically permeable. Measurement of an output signals allows for precise determination of the movable element location relative to the container. The system can be utilized to determine fluid volumes in accumulators used for controlling subsea equipment by monitoring the location of a movable element, e.g., a piston, within a hydraulic fluid accumulator.

44. 发明授权

US10337890B2 Integrated micro actuator and LVDT for high precision position measurements 有权
公开(公告)号：US10337890B2
公开(公告)日：2019-07-02
申请号：US15377458
申请日：2016-12-13
申请人： Oxford Instruments PLC , Oxford Instruments AFM Inc
发明人： Roger Carlos Proksch , Dan Bocek , Jason Cleveland , Matthew Longmire , Matthew Klonowski
IPC分类号： G01B7/14 , G01D5/22 , G01Q10/04 , H01F21/04
摘要： A single housing with a non-ferromagnetic piezo-driven flexure has primary and secondary coil forms of different diameters, one coaxially inside the other, integrated in the flexure. The cylinders defining the planes of the primary and secondaries do not spatially overlap. The secondary coil forms may be wound in opposite directions and wired to provide a transformer device. Movement of the primary relative to the secondaries in the direction of the central axis of the coils can be differentially detected with high precision.

45. 发明授权

US10337889B2 Inductive position determination 有权
公开(公告)号：US10337889B2
公开(公告)日：2019-07-02
申请号：US15538164
申请日：2015-12-15
申请人： ZF Friedrichshafen AG
发明人： Ajoy Palit , Joachim Degen
IPC分类号： G01D5/20 , G01B7/00 , G01D5/22
摘要： A device for inductive position determination comprises a coil, a positional element, a scanning device for determining an inductance of the coil and an evaluation device for determining a position of the positional element in relation to the coil, based on the inductance determined. In certain embodiments, the positional element comprises a ferromagnetic and electrically insulated material.

46. 发明申请

US20190198218A1 ELECTROMAGNETIC DEVICE 审中-公开
公开(公告)号：US20190198218A1
公开(公告)日：2019-06-27
申请号：US16223156
申请日：2018-12-18
申请人： Hamilton Sundstrand Corporation
发明人： Marcin CIS , Patryk SZCZESNY
IPC分类号： H01F21/06 , H01F27/32 , H01F41/02 , G01D5/22
CPC分类号： H01F21/06 , G01D5/2291 , H01F27/263 , H01F27/325 , H01F27/38 , H01F41/02 , H01F41/024
摘要： An electromagnetic device is disclosed, the electromagnetic device comprising a core support having an exterior surface comprising at least one radial protrusion, a tubular magnetic core positioned around a portion of the length of the core support, the tubular magnetic core having an interior surface, at least one indent located in the interior surface of the tubular magnetic core, wherein the at least one protrusion is located within the at least one indent to prevent relative longitudinal movement between the core support and tubular magnetic core, and a primary coil and at least one secondary coil, each coil positioned around a portion of a length of the tubular magnetic core.

47. 发明申请

US20190186956A1 LINEAR VARIABLE DIFFERENTIAL TRANSFORMER (LVDT) CALIBRATION MECHANISM FOR PRECISION RIGGING WITH VIBRATION AND ACCURACY TRACKING ROBUSTNESS 审中-公开
公开(公告)号：US20190186956A1
公开(公告)日：2019-06-20
申请号：US16279773
申请日：2019-02-19
申请人： Honeywell International Inc.
发明人： Aaron Daniels , Joe Walling , Charles Licata
IPC分类号： G01D5/22 , G01D18/00
CPC分类号： G01D5/2291 , G01D18/00
摘要： Embodiments generally relate to assembly and methods for precisely rigging a linear variable differential transformer (LVDT). For example, the probe rod assembly of a dual tandem LVDT may comprise two moveable cores, a probe fitting, and a probe rod. Generally, the first moveable core may be configured to achieve electrical zero with its respective transformer. Without adjusting the position of the probe rod with respect to the one or more coils of wire, the second moveable core may be configured to achieve electrical zero with its respective transformer. This may ensure that both moveable cores simultaneously achieve electrical zero in the null position. Typically, the probe fitting may be configured to fit at a first end of the probe rod projecting outward from the outer housing. The disclosed assembly and methods may be used to precisely rig dual tandem LVDTs, single channel LVDTs, and dual parallel LVDTs.

48. 发明授权

US10295694B2 Inductive sensing with differential inductance readout 有权
公开(公告)号：US10295694B2
公开(公告)日：2019-05-21
申请号：US15255145
申请日：2016-09-02
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： George Reitsma
IPC分类号： G01V3/10 , G01D5/22 , G01D5/243
摘要： For inductive sensing (such as for proximity switching), differential inductance readout is based on Sense/Reference resonators implemented as LC-ring oscillators, with LS/LR inductor coils and a shared (time-multiplexed) resonator capacitor. The ring oscillators include matched Lsense/Lref drivers time-multiplexed (by out enable signals), to provide Lsense/Lref resonator excitation signals to the Lsense/Lref resonators, based on resulting Lsense/Lref resonance measurements (such as of resonance state) acquired by the ring oscillators from the Lsense/Lref resonators. Differential readout data is based on the time-multiplexed Lsense/Lref resonance measurements, corresponding respectively to LS/LR coil inductances (such as based on Lsense/Lref resonator oscillation frequency). The ring oscillators can be implemented with a Schmitt trigger, converting analog resonance measurements into digital input to the Lsense/Lref drivers. Driver matching and layout matching can be used to improve accuracy. Effects of parasitic capacitance at the driver outputs can be suppressed by shorting or bootstrapping across the inactive LS/LR coil inductances.

49. 发明授权

US10267654B2 LVDT having a flexible element and a bobbin made of thermoplastic material 有权
公开(公告)号：US10267654B2
公开(公告)日：2019-04-23
申请号：US15357639
申请日：2016-11-21
申请人： Honeywell International Inc.
发明人： Aaron Daniels , Paresh Sanchihar , Murgesh R Sajjan , Vijayshekhar Araganji
IPC分类号： G01D5/22
摘要： Apparatus and associated methods relate to a linear variable differential transformer (LVDT) having at least one a flexible element attached to a bobbin, where the bobbin is made from thermoplastic material having a coefficient of thermal expansion (CTE) matched to a coil wire of the LVDT. In an illustrative example, the flexible element may include a flexible substrate located between the bobbin and an enclosure of the LVDT. The flexible element provides temperature compensation by absorbing mechanical stresses and/or electro-thermal stresses for the LVDT, while the thermoplastic bobbin provides thermal stability to the LVDT by mitigating breakage of the LVDT coils due to expansion of the bobbin in response to temperature variations.

50. 发明申请

US20190047794A1 Method and Apparatus for Identifying a Mover on a Closed Track 审中-公开
公开(公告)号：US20190047794A1
公开(公告)日：2019-02-14
申请号：US15672788
申请日：2017-08-09
申请人： Rockwell Automation Technologies, Inc.
发明人： Patrick E. Ozimek , Oliver C. Haya , Peter m. Smit , Marc Koeppel
IPC分类号： B65G43/10 , H02K1/14 , H02K41/03 , G01D5/20 , G01D5/22 , H02K11/225
摘要： An improved system for determining the identification of movers in a motion control system is disclosed, where the motion control system includes multiple movers traveling on a closed track. The physical construction of at least one element of one of the movers is different on one mover than on each of the other movers. The control system for the movers detects the difference in construction and identifies the unique mover as a first mover. Each of the other movers along the track are assigned an identifier based on their relative position to the first mover. According to one embodiment, a position sensing system is utilized to identify the first mover. According to another embodiment, the drive system for the movers is utilized to identify the first mover. In still another embodiment, a combination of the position sensing system and the drive system is utilized to identify the first mover.

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