Patents by Inventor Alireza AZARFAR
Alireza AZARFAR has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12234863Abstract: A method of determining the center of loading of a rolling element includes providing a rolling element body and at least three load sensors. The sensors are each positioned within a bore of the rolling element body at a separate distance from a reference position. Load measurements are taken with each one of the sensors at various positions about the circumference of the bearing and the center of loading is calculated at each one of the positions to determine the variation in axial loading about the bearing circumference.Type: GrantFiled: August 5, 2021Date of Patent: February 25, 2025Assignee: AKTIEBOLAGET SKFInventors: Alireza Azarfar, Andreas Clemens van der Ham, Dominik Fritz, Stefan Engbers, Juergen Reichert, Defeng Lang
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Publication number: 20240377283Abstract: A method for predicting the evolution of a defect of a bearing includes identifying a defect of the bearing and extracting geometrical parameters of the identified defect by a trained deep learning algorithm from a picture of the bearing and further includes predicting an evolution of the identified defect of the bearing from a type of the identified defect and the extracted geometrical parameters of the identified defect, from operating parameters of the bearing and from a model of the bearing. Also a device for performing the method.Type: ApplicationFiled: August 12, 2022Publication date: November 14, 2024Inventors: Mourad CHENNAOUI, Christine MATTA, Alireza AZARFAR, Guillermo Enrique MORALES ESPEJEL, Xiaobo Zhou
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Patent number: 12055458Abstract: A method of identifying at least one defect of a rotating component, where the defect is selected from a group of predefined defects, includes extracting frequency data related to each of the predefined defects in order to form a first spectrum signature for each of the predefined defects. Also measuring at least one vibration signal produced by the rotating component to obtain at least two second spectrums, filtering each second spectrum based on an exponential smoothing algorithm, selecting peaks in each second spectrum according to a prominence of each of the peaks, setting selected peaks to zero if the selected peaks are not present in a predefined number of consecutive second spectrums, and calculating a probability that each first spectrum signature corresponds to at least one of the second spectrums.Type: GrantFiled: July 27, 2022Date of Patent: August 6, 2024Assignee: AKTIEBOLAGET SKFInventors: Alireza Azarfar, Lambert Karel van Vugt, Cornelis Harm Taal, Kareem Gouda, Elizabertus Maljaars
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Patent number: 11796421Abstract: A monitoring device for monitoring a bearing in an electromagnetic field environment includes a vibration sensor for delivering at least one measurement that includes at least one vibration frequency generated by a bearing, and a processing module that includes a first processing module configured to determine at least one normalized measured value from the at least one vibration frequency, a filtering module configured to compare the normalized measured value to at least one predetermined normalized reference value indicative of electromagnetic phenomena acting on the bearing, and a second processing module configured to process the at least one vibration frequency to determine a bearing defect if the normalized measured value is different from the at least one predetermined normalized reference value.Type: GrantFiled: March 1, 2022Date of Patent: October 24, 2023Assignee: AKTIEBOLAGET SKFInventors: Elizabertus Maljaars, Alireza Azarfar, Kareem Gouda, Lambert Karel van Vugt, Cornelis Harm Taal
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Publication number: 20230287936Abstract: A monitoring system is proposed. The monitoring system comprises a rolling bearing comprising a first ring and a second ring (7, 8) capable of rotating concentrically relative to one another, and at least one row of rolling elements (5) interposed between a first raceway and a second raceway respectively provided on the first and second rings, wherein: at least one of the rolling elements (5) of the rolling bearing is a sensorized rolling element comprises at least one sensor measuring at least one parameter of the sensorized rolling element and a wireless transmitter to transmit the measurements of the sensor, and wherein the system comprises: a receiving device (21) configured to receive the measurements of the sensor of the sensorized rolling element of the rolling bearing, and a processing device (23) configured to process the measurements received by the receiving device to detect damage and/or a contamination of the rolling bearing (2).Type: ApplicationFiled: February 20, 2023Publication date: September 14, 2023Inventors: Alireza Azarfar, Andreas Clemens Van Der Ham, Dominik Fritz, Stefan Engbers, Juergen Reichert, Defeng Lang
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Publication number: 20230280239Abstract: A monitoring device for monitoring a bearing in an electromagnetic field environment includes a vibration sensor for delivering at least one measurement that includes at least one vibration frequency generated by a bearing, and a processing module that includes a first processing module configured to determine at least one normalized measured value from the at least one vibration frequency, a filtering module configured to compare the normalized measured value to at least one predetermined normalized reference value indicative of electromagnetic phenomena acting on the bearing, and a second processing module configured to process the at least one vibration frequency to determine a bearing defect if the normalized measured value is different from the at least one predetermined normalized reference value.Type: ApplicationFiled: March 1, 2022Publication date: September 7, 2023Applicant: AKTIEBOLAGET SKFInventors: Elizabertus Maljaars, Alireza Azarfar, Kareem Gouda, Lambert Karel van Vugt, Cornelis Harm Taal
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Publication number: 20230073415Abstract: A method of identifying at least one defect of a rotating component, where the defect is selected from a group of predefined defects, includes extracting frequency data related to each of the predefined defects in order to form a first spectrum signature for each of the predefined defects. Also measuring at least one vibration signal produced by the rotating component to obtain at least two second spectrums, filtering each second spectrum based on an exponential smoothing algorithm, selecting peaks in each second spectrum according to a prominence of each of the peaks, setting selected peaks to zero if the selected peaks are not present in a predefined number of consecutive second spectrums, and calculating a probability that each first spectrum signature corresponds to at least one of the second spectrums.Type: ApplicationFiled: July 27, 2022Publication date: March 9, 2023Inventors: Alireza Azarfar, Lambert Karel van Vugt, Cornelis Harm Taal, Kareem Gouda, Elizabertus Maljaars
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Publication number: 20230038874Abstract: A method of determining the center of loading of a rolling element includes providing a rolling element body and at least three load sensors. The sensors are each positioned within a bore of the rolling element body at a separate distance from a reference position. Load measurements are taken with each one of the sensors at various positions about the circumference of the bearing and the center of loading is calculated at each one of the positions to determine the variation in axial loading about the bearing circumference.Type: ApplicationFiled: August 5, 2021Publication date: February 9, 2023Inventors: Alireza Azarfar, Andreas Clemens van der Ham, Dominik Fritz, Stefan Engbers, Juergen Reichert, Defeng Lang
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Publication number: 20230025558Abstract: Disclosed is a sensor roller for monitoring a lubrication condition of a roller bearing, the sensor roller providing a measuring unit for measuring at least a temperature, a speed change and a load of the roller, and a processing unit for generating a temperature profile, a speed change profile and a load profile of the roller based on the measured temperature and speed change.Type: ApplicationFiled: July 14, 2022Publication date: January 26, 2023Inventors: Defeng Lang, Andreas Clemens Van Der Ham, Alireza Azarfar, Dominik Fritz, Stefan Engbers, Juergen Reichert
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Publication number: 20220341817Abstract: A process for determining the reliability of a sensorized bearing configured to measure load and speed is provided. The process includes the following steps. Bearing load and rotational speed are determined from data acquired from the sensorized bearing. Next, an array linking the determined load to the determined n.dm value is filled until that all available loads are parsed. Then a L10 life is determined for each load within a distribution based on the array. Finally, an overall L10 life is determined based on the Palmgren-Minor rule. The load distribution and the L10 lives a bearing reliability R for a given date is determined based on a Weibull curve and the overall L10 life.Type: ApplicationFiled: March 30, 2022Publication date: October 27, 2022Inventors: Andreas Clemens van der Ham, Alireza Azarfar, Dominik Fritz, Stefan Engbers, Juergen Reichert, Defeng Lang
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Patent number: 11090872Abstract: Method and system arranged for obtaining an electronic 3D model of a 3D object to be fabricated. The method further including generating control instructions based on the electronic 3D model and process parameters of the fabrication process, determining a mesh model representing the electronic 3D model, the mesh model including elements each having at least one property that is affectable by at least one of the process parameters, and performing simulation of the fabrication process in time using the control instructions, the mesh model and the process parameters. The simulation includes establishing a deviation of the at least one property relative to a reference thereof for each element of the mesh model, wherein the deviation is induced by at least one of the process parameters, and establishing an adaptation for the at least one property of each element of the mesh model to compensate for the deviation.Type: GrantFiled: April 5, 2019Date of Patent: August 17, 2021Assignee: BOND HIGH PERFORMANCE 3D TECHNOLOGY B.V.Inventors: Nienke Koopmans, Alireza Azarfar, Thijs Tromper
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Publication number: 20210046710Abstract: Method and system arranged for obtaining an electronic 3D model of a 3D object to be fabricated. The method further including generating control instructions based on the electronic 3D model and process parameters of the fabrication process, determining a mesh model representing the electronic 3D model, the mesh model including elements each having at least one property that is affectable by at least one of the process parameters, and performing simulation of the fabrication process in time using the control instructions, the mesh model and the process parameters. The simulation includes establishing a deviation of the at least one property relative to a reference thereof for each element of the mesh model, wherein the deviation is induced by at least one of the process parameters, and establishing an adaptation for the at least one property of each element of the mesh model to compensate for the deviation.Type: ApplicationFiled: April 5, 2019Publication date: February 18, 2021Inventors: Nienke KOOPMANS, Alireza AZARFAR, Thijs TROMPER