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公开(公告)号：US10472958B2
公开(公告)日：2019-11-12
申请号：US16132250
申请日：2018-09-14
Applicant: Saudi Arabian Oil Company
Inventor： Md Amanullah , Turki Thuwaini Mohammed Alsubaie
Abstract: Techniques for determining properties of a spotting fluid include positioning a member of a test apparatus into a prepared mudcake sample at a specified depth, the mudcake sample associated with a drilling fluid and including a specified thickness; circulating a flow of the spotting fluid to contact the prepared mudcake sample in a test cell; soaking the prepared mudcake sample in the spotting fluid for a specified time duration; subsequent to the specified time duration, detecting a force exerted on the member relative to a displacement distance of the member from the specified depth in the mudcake sample during removal of the member from the mudcake sample; recording, with the test apparatus, the detected force relative to the displacement distance; and determining, with the test apparatus, one or more properties associated with the mudcake sample based on the recorded force relative to the displacement distance.
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公开(公告)号：US10466119B2
公开(公告)日：2019-11-05
申请号：US15178976
申请日：2016-06-10
Applicant: NextInput, Inc.
Inventor： Ian Campbell , Ryan Diestelhorst , Dan Benjamin , Steven S. Nasiri
Abstract: An example MEMS force sensor is described herein. The MEMS force sensor can include a cap for receiving an applied force and a sensor bonded to the cap. A trench and a cavity can be formed in the sensor. The trench can be formed along at least a portion of a peripheral edge of the sensor. The cavity can define an outer wall and a flexible sensing element, and the outer wall can be arranged between the trench and the cavity. The cavity can be sealed between the cap and the sensor. The sensor can also include a sensor element formed on the flexible sensing element. The sensor element can change an electrical characteristic in response to deflection of the flexible sensing element.
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公开(公告)号：US20190310156A1
公开(公告)日：2019-10-10
申请号：US16450709
申请日：2019-06-24
Applicant: Hamilton Sundstrand Corporation
Inventor： Charles R. Kleza , Andrew P. Davidson , John B. Engel , David J. Coache
IPC: G01L25/00 , G06F3/01 , B25B23/142 , F04D29/042
Abstract: A calibration system includes a housing, a drive shaft within the housing, a load application apparatus operatively connected to the drive shaft to apply a force to the drive shaft, and a plurality of housing transducers operatively connected to the drive shaft to measure at least one of an in-line torque or a prevailing torque of the drive shaft. A method for calibrating a tool includes generating at least one of a pass or fail output from a processing unit based on whether a variance between a prevailing torque from a tool transducer and a prevailing torque from an external tool is within a predetermined variance threshold. A method for measuring prevailing torque in a tool includes determining whether a prevailing torque value is within a predetermined prevailing torque range and adjusting a shut-off threshold torque based on the prevailing torque.
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公开(公告)号：US10422714B2
公开(公告)日：2019-09-24
申请号：US14962221
申请日：2015-12-08
Applicant: EMPIRE TECHNOLOGY DEVELOPMENT LLC
Inventor： Yang-Won Jung
Abstract: Technologies are generally described that relate to managing and/or generating sensor data. An example method may include receiving output data generated by a pressure sensor. The method may also include determining surface data, indicative of a surface type associated with a force applied to a surface of the pressure sensor, based on the output data. Furthermore, the method may include adjusting the output data based on the surface data to facilitate generating adjusted output data indicative of an adjusted pressure value generated by the pressure sensor.
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公开(公告)号：US10371589B2
公开(公告)日：2019-08-06
申请号：US15544492
申请日：2016-01-08
Applicant: MEIDENSHA CORPORATION
Inventor： Takao Akiyama , Nobuhiko Asakura
Abstract: The purpose of the present invention is to provide a control device for a dynamometer system, with which, by a simple method, an unloaded state can be reproduced highly accurately when a test piece is started. A dynamo control device 6 is provided with: an integral control input computation unit 611 for computing the integral value of axle torque deviation, and multiplying the sum thereof and a correction value by an integral gain to compute an integral control input; a correction value computation unit 612 for multiplying an inertia compensation quantity Jcmp by the dynamo rotation frequency to compute a correction value; a non-integral control input computation unit 613 for designating, as a non-integral control input, the output of a prescribed transmission function Ge0(s) having axle torque deviation as input; and a totaling unit 614 for totaling the integral control input and the non-integral control input in order to generate a torque current command signal to the dynamometer. The transmission function Ge0(s) of the non-integral control input computation unit 613 is derived by separating the integrator from a transmission function Ge(s) having an axle torque control function, in such a way as to satisfy the relational equation (Ge(s)=Ki/s+Ge0(s)).
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Patent Agency Ranking
公开(公告)号：US10352784B2
公开(公告)日：2019-07-16
申请号：US14912520
申请日：2014-08-26
Inventor： Subrata Roy , Jignesh Soni
Abstract: Embodiments of the invention relate to a thrust stand and a method of measuring thrust. Embodiments of the invention pertain to a method of calibrating a thrust stand. Embodiments of the subject thrust stand can incorporate a passive eddy current based damper. Specific embodiments of the passive eddy current based damper can function without contact with the balance arm. Further specific embodiments of the passive eddy current based damper can be used in a vacuum. Embodiments can utilize signal analysis techniques to identify and reduce noise. A logarithmic decrement method can be used to calibrate the thrust stand. Force measurements can be made with embodiments of the subject thrust stand for a standard macroscale dielectric barrier discharge (DBD) plasma actuator and/or other thrust producing devices.
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公开(公告)号：US20190195719A1
公开(公告)日：2019-06-27
申请号：US16255842
申请日：2019-01-24
Inventor： Zecheng TAO
Abstract: A precision detection device for a force standard machine includes a first hydraulic cylinder, a pipeline and a force loading device. A liquid medium is disposed in, the first hydraulic cylinder, and a liquid level area of the liquid medium is a known Value. The pipeline is a hollow tubular structure, and a first end of the pipeline is communicated with the liquid medium in the first hydraulic cylinder. The force loading device acts on the liquid medium, in the first hydraulic cylinder to produce a pressure increment or a pressure intensity increment on the, liquid medium. A force value comparison machine and a precision detection method for a force standard machine are also provided.
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公开(公告)号：US10317303B2
公开(公告)日：2019-06-11
申请号：US15345797
申请日：2016-11-08
Applicant: Steven Spirer
Inventor： Steven Spirer
Abstract: A unitary tension and torque calibration apparatus consists of a unitary device which has a hollow rotary torque transducer for calibrating the torque of a rotating torque tightening tool. At the same time the torque of the tool is being calibrated, a reaction arm attached to the transducer reacts against rotation to induce stress on the metal component being calibrated. The axial forces generated within the metal component by rotation, opposed by the reaction arm, results in tension which is calibrated by a piston driven load cell secured directly to the transducer. Display devices attached to the transducer and load cell simultaneously and contemporaneously show the calibrated results.
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公开(公告)号：US20190078951A1
公开(公告)日：2019-03-14
申请号：US16186512
申请日：2018-11-10
Applicant: Bertec Limited
Inventor： Necip Berme , Sasan Ghassab , Jan Jakub Ober
CPC classification number: G01L5/16 , G01L1/2281 , G01L5/161 , G01L25/00 , G01L25/003
Abstract: A force measurement system is disclosed herein. The force measurement system includes a force measurement assembly and a data processing device operatively coupled to the force measurement assembly. In one or more embodiments, the data processing device is configured to reference a stored global calibration matrix for the force measurement assembly, to determine a location of an applied load on the surface of the force measurement assembly using the stored global calibration matrix, to assign the applied load to one or more of a plurality of different load regions based upon the location of the applied load, and to compute one or more output forces or moments of the applied load using stored local calibration information for the one or more of the plurality of different load regions. A method of calibrating a force measurement system is also disclosed herein.
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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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