Patents by Inventor Zhigang Sun
Zhigang Sun 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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Publication number: 20250118197Abstract: A computer-implemented method for generating a knowledge graph for traffic motion prediction. The method includes: receiving environment sensor data of at least one environment sensor of an ego-vehicle; receiving map data from an electronic road map; extracting the information regarding the at least one traffic participant from the environment sensor data and extracting the information regarding the motion track the traffic participant is positioned on from the map data; and generating a knowledge graph of the road network in the environment of the ego-vehicle including nodes and edges based on the map data and/or the environment sensor data. The knowledge graph includes at least one node representing the traffic participant and at least one node representing the lane the traffic participant is positioned on.Type: ApplicationFiled: September 10, 2024Publication date: April 10, 2025Inventors: Leon Mlodzian, Juergen Luettin, Lavdim Halilaj, Zhigang Sun, Hendrik Berkemeyer, Sebastian Monka, Zixu Wang
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Publication number: 20250115559Abstract: Provided are a preparation method of a pyridazinone derivative, an intermediate thereof, and a preparation method of the intermediate. The method has the advantages of easily available raw materials, simple steps, low costs, good intermediate stability, high purity and high yield, and is suitable for large-scale industrial production.Type: ApplicationFiled: February 6, 2023Publication date: April 10, 2025Inventors: Jiang Fan, Ying Dou, Fengfei Zhu, Zhenping Liu, Jianchuan Feng, Zhigang Wang, Jingxiong Sun, Sijia Liu
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Patent number: 12270730Abstract: Integrated automatic detection equipment includes a tractor, a first test vehicle and a second test vehicle. A central control system, a geometric linear detection system, a road three-dimensional (3D) detection system, and a laser 3D scanning system are arranged on the tractor. A front end of the first test vehicle is detachably connected to a rear end of the tractor, and a rear end of the first test vehicle is detachably connected to a front end of the second test vehicle. A drop hammer loading system is arranged on the first test vehicle. A bridge dynamic detection system is arranged on the second test vehicle. The geometric linear detection system, the road 3D detection system, and the drop hammer loading system are used for a road detection.Type: GrantFiled: October 20, 2021Date of Patent: April 8, 2025Inventors: Yang Yang, Xiaojun Shen, Kanghui Luo, Hanqing Zhao, Wenqi Yang, Hui Wang, Song Wang, Changqing Liu, Binglin Jiang, Zhen Wang, Zhigang Wu, Qiang Wei, Rui Sun, Wanqin Li
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Publication number: 20250109460Abstract: A method of producing a neodymium metal can include mixing a dissolution agent comprising magnesium with a neodymium-containing feedstock. The dissolution agent and the neodymium-containing feedstock can be heated to an elevated temperature above a melting temperature of the dissolution agent to form a neodymium-magnesium alloy. The neodymium-magnesium alloy can be exposed to hydrogen gas to convert neodymium in the alloy to a neodymium hydride. The neodymium hydride can be separated from the magnesium in the alloy. The neodymium can be optionally dehydrogenated to yield a purified neodymium product.Type: ApplicationFiled: September 30, 2024Publication date: April 3, 2025Inventors: Munro ALLEY, Pei SUN, Zhigang Zak FANG
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Publication number: 20250092034Abstract: A method for preparing a finerenone intermediate compound of formula I from a diastereomeric tartrate by means of racemic resolution is provided. A compound of formula I having an ee value higher than 99.5% can be obtained. The preparation method provided has mild reaction conditions, simple post-treatment, and no special reagents required, and is suitable for industrial production.Type: ApplicationFiled: December 28, 2022Publication date: March 20, 2025Inventors: Zhigang XIONG, Jian TANG, Yong SUN, Chao ZHANG, Jiadong WEI, Dingjun CHU
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Publication number: 20250062442Abstract: A thermal management assembly, including: a heat exchange plate, with a heat transfer fluid flowing in a flow channel of the heat exchange plate and exchanges heat with the outside; a fluid guide block installed on the heat exchange plate; an intermediate heat exchanger installed on the fluid guide block and having a first fluid path and a second fluid path, the heat transfer fluid in the first fluid path and that in the second fluid path exchanging heat; an expansion valve installed on a fluid guide block. The fluid guide block is further provided with a first opening, a second opening, and an installation chamber; the first opening is in fluid communication with the first fluid path; the installation chamber is in fluid communication with the first and second openings respectively; the expansion valve is installed in the installation chamber.Type: ApplicationFiled: December 26, 2022Publication date: February 20, 2025Applicant: VALEO SYSTEMES THERMIQUESInventors: Jianqi SUN, Wenchuan XIANG, Sheng ZUO, Jingyu NI, Changsheng FAN, Zhigang LIU
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Patent number: 12140032Abstract: Methods and systems for determining a change in condition of a rock bolt. Some methods may comprise, at a first point in time, propagating shear and longitudinal ultrasonic waves along the rock bolt to measure a first time of flight for each of the shear and longitudinal waves, at a second point in time after the first point in time, propagating shear and longitudinal ultrasonic waves along the rock bolt to measure a second time of flight for each of the shear and longitudinal waves, and using the relative changes of the first and second time of flights, determining the change in condition of the rock bolt section.Type: GrantFiled: February 10, 2023Date of Patent: November 12, 2024Assignee: National Research Council of CanadaInventors: Zhigang Sun, Kuo-Ting Wu, Silvio Elton Kruger
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Publication number: 20240372305Abstract: A coupler for coupling an RF connector to an ultrasound sensing element. The coupler includes a conductive coupler body with a first end and a second end. The first end includes a pad retaining recess with a compressible conductive pad positioned in and protruding from the pad retaining recess. The second end either includes an opening for receiving a male pin of a radio frequency (RF) connector or is shaped to be press-fitted into the female pin opening of an RF connector, to conductively connect the pin with the coupler body. A sensor connector is also disclosed.Type: ApplicationFiled: September 2, 2022Publication date: November 7, 2024Inventors: Zhigang Sun, Tony Vaillancourt
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Patent number: 11965861Abstract: Disclosed is an equivalent acceleration method of creep loads based on a consistent failure mode. The equivalent acceleration method includes obtaining corresponding tensile strengths; obtaining corresponding creep rupture time; establishing rupture time law, minimum creep rate law and rupture strain law; calculating the value of parameter p in creep damage accumulation model; and dividing the failure mode consistency interval of creep load under variable temperature and variable load. The damage caused by the creep load in the failure mode consistency interval is calculated by using the multi-grade variable temperature and variable load creep nonlinear damage accumulation model, the damage is accelerated to the maximum creep load state in the failure mode consistency interval according to the principle of damage equivalence, and finally the equivalent acceleration of creep load is realized.Type: GrantFiled: May 12, 2022Date of Patent: April 23, 2024Assignee: NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICSInventors: Zhigang Sun, Xu Zhao, Yingdong Song, Xuming Niu, Yaning Chang, Qiuhong Peng
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Publication number: 20240053300Abstract: Described are various embodiments of an ultrasonic structural health monitoring device, system and method. In one embodiment, an ultrasonic structural health monitoring device is described to monitor a structure. The device comprises a bottom electrode disposable on the structure; a piezoelectric medium disposed on the bottom electrode; a top electrode disposed on the piezoelectric medium; an acoustic insulation layer; and a connector to bring electrical excitation for the piezoelectric medium and to collect a generated electric response therefrom representative of structural health.Type: ApplicationFiled: August 20, 2021Publication date: February 15, 2024Applicant: NATIONAL RESEARCH COUNCIL OF CANADAInventors: Silvio Elton KRUGER, David ROCHELEAU, Zhigang SUN, Kuo-Ting WU
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Patent number: 11881796Abstract: A method of controlling a permanent magnet synchronous electric machine (PMSM) drive using a Deadbeat Predictive Current Control (DBPCC) scheme is provided. The method comprises: determining d-axis and q-axis stator current values (id, iq) representative of a measured PMSM current; determining d-axis and q-axis reference current values (id*, iq*); based on the stator current values (id, iq) and the reference current values (id*, iq*), determining d-axis and q-axis current correction values (Cd, Cq); determining corrected reference current values (id**, iq**) as a sum of the reference current values (id*, iq*) and the current correction values (Cd, Cq); and controlling the PMSM drive using the corrected reference current values (id**, iq**) as reference current inputs of the DBPCC scheme. A controller for performing the method; a system comprising the controller, a PMSM and associated power electronics; and a computer program for performing the method are also provided.Type: GrantFiled: May 17, 2022Date of Patent: January 23, 2024Assignee: ROLLS ROYCE PLCInventors: Shangjian Dai, Zhigang Sun, Ellis Fh Chong, Jiabin Wang
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Publication number: 20230236154Abstract: A method of monitoring both liner wear and charge impact in an industrial mill uses a sensor mounted on an elongated element deployed through a shell into a liner of the mill. The elongated element wears at a same rate as the liner under conditions within the shell. Liner wear is related to a reduction in length of the elongated element as measured by travel time of an ultrasound wave, while location and strength of charge impact is related to change in amplitude of vibrations caused by the charge impact. Liner wear measurement can be improved by using shear ultrasound waves instead of conventional longitudinal ultrasound waves. A mill monitoring apparatus has a means for acquiring ultrasonic waves and audible sound waves using the same digitizer; a means for determining the angular position of the monitoring apparatus; and a means for supplying electric power to the apparatus.Type: ApplicationFiled: June 21, 2021Publication date: July 27, 2023Inventors: Zhigang SUN, Kuo-Ting WU, Cheng HU, Silvio Elton KRÜGER
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Publication number: 20230184114Abstract: Methods and systems for determining a change in condition of a rock bolt. Some methods may comprise, at a first point in time, propagating shear and longitudinal ultrasonic waves along the rock bolt to measure a first time of flight for each of the shear and longitudinal waves, at a second point in time after the first point in time, propagating shear and longitudinal ultrasonic waves along the rock bolt to measure a second time of flight for each of the shear and longitudinal waves, and using the relative changes of the first and second time of flights, determining the change in condition of the rock bolt section.Type: ApplicationFiled: February 10, 2023Publication date: June 15, 2023Applicant: National Research Council of CanadaInventors: Silvio Elton Kruger, Zhigang Sun, Kuo-Ting Wu, David Rocheleau
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Publication number: 20230184648Abstract: Disclosed is a method for predicting creep damage and deformation evolution behavior with time, which comprises the following steps: obtaining tensile strength ?b through high-temperature tensile test; obtaining the strain curve, minimum creep rate {dot over (?)}m and life tƒ through creep test; obtaining the threshold stress ?th at different temperatures; establishing the relationship between the tensile strength ?b, the threshold stress ?th and the temperature T; establishing the prediction formulas of the minimum creep rate ?th and creep life ?b based on the threshold stress {dot over (?)}m and the tensile strength tƒ; establishing a creep damage constitutive model, including strain rate formula and damage rate formula; obtaining the evolution behavior of strain and deformation with time; obtaining the evolution behavior of damage with time.Type: ApplicationFiled: January 9, 2023Publication date: June 15, 2023Inventors: Yingdong SONG, Xu ZHAO, Zhigang SUN, Xuming NIU
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Method for compiling equivalent acceleration spectrum of creep under variable temperatures and loads
Patent number: 11650143Abstract: Disclosed is a method for compiling an equivalent acceleration spectrum of creep under variable temperatures and loads. The method includes following steps: respectively carrying out a material high-temperature tensile test, material high-temperature creep tests and creep tests under two-stage variable temperatures and loads, and calculating values of a parameter p in a creep damage accumulation model under two-stage variable temperatures and loads; based on a nonlinear damage accumulation model under multi-stage variable temperatures and loads, calculating a damage D caused by a multi-stage variable temperatures and loads creep load spectrum by utilizing values of parameter p; based on the principle of consistency of damage D, transforming the multi-stage variable temperatures and loads creep load spectrum into an equivalent acceleration spectrum of a first-order maximum creep load, and finally compiling the equivalent acceleration spectrum of creep under variable temperatures and loads.Type: GrantFiled: April 29, 2022Date of Patent: May 16, 2023Assignee: NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICSInventors: Yingdong Song, Xu Zhao, Zhigang Sun, Xuming Niu, Yaning Chang, Qiuhong Peng -
Patent number: 11619132Abstract: A methods and systems for determining a change in condition of a rock bolt. Some methods may comprise, at a first point in time, propagating shear and longitudinal ultrasonic waves along the rock bolt to measure a first time of flight for each of the shear and longitudinal waves, at a second point in time after the first point in time, propagating shear and longitudinal ultrasonic waves along the rock bolt to measure a second time of flight for each of the shear and longitudinal waves, and using the relative changes of the first and second time of flights, determining the change in condition of the rock bolt section.Type: GrantFiled: August 16, 2017Date of Patent: April 4, 2023Assignee: National Research Council of CanadaInventors: Zhigang Sun, Kuo-Ting Wu, Silvio Elton Krüger
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Publication number: 20230038640Abstract: The present disclosure discloses a method for calculating the service life of a material under the action of a thermal shock load. The method includes steps of obtaining test results at different thermal shock temperatures and a thermal shock cycle number according to a thermal shock test, and calculating a temperature rise rate to temperature drop rate ratio Rv; calculating a corresponding stress intensity factor ?K according to a crack length a measured in the test; calculating a thermal stress ? at the notch and a notch stress concentration coefficient kt of the test specimen; calculating a stress intensity factor threshold ?Kth according to the crack length a measured in the test; and substituting the obtained the stress intensity factor ?K, stress intensity factor threshold ?Kth and temperature rise rate to temperature drop rate ratio Rv into a thermal fatigue crack growth model.Type: ApplicationFiled: September 30, 2022Publication date: February 9, 2023Applicant: Nanjing University of Aeronautics and AstronauticsInventors: Zhigang Sun, Yingdong Song, Rutao Zhao, Xuming Niu, Yaning Chang
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Publication number: 20220399841Abstract: A method of controlling a permanent magnet synchronous electric machine (PMSM) drive using a Deadbeat Predictive Current Control (DBPCC) scheme is provided. The method comprises: determining d-axis and q-axis stator current values (id, iq) representative of a measured PMSM current; determining d-axis and q-axis reference current values (id*, iq*); based on the stator current values (id, iq) and the reference current values (id*, iq*), determining d-axis and q-axis current correction values (Cd, Cq); determining corrected reference current values (id**, iq**) as a sum of the reference current values (id*, iq*) and the current correction values (Cd, Cq); and controlling the PMSM drive using the corrected reference current values (id**, iq**) as reference current inputs of the DBPCC scheme. A controller for performing the method; a system comprising the controller, a PMSM and associated power electronics; and a computer program for performing the method are also provided.Type: ApplicationFiled: May 17, 2022Publication date: December 15, 2022Applicant: ROLLS-ROYCE plcInventors: Shangjian DAI, Zhigang SUN, Ellis FH CHONG, Jiabin WANG
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Publication number: 20220268677Abstract: Disclosed is an equivalent acceleration method of creep loads based on a consistent failure mode. The equivalent acceleration method includes obtaining corresponding tensile strengths; obtaining corresponding creep rupture time; establishing rupture time law, minimum creep rate law and rupture strain law; calculating the value of parameter p in creep damage accumulation model; and dividing the failure mode consistency interval of creep load under variable temperature and variable load. The damage caused by the creep load in the failure mode consistency interval is calculated by using the multi-grade variable temperature and variable load creep nonlinear damage accumulation model, the damage is accelerated to the maximum creep load state in the failure mode consistency interval according to the principle of damage equivalence, and finally the equivalent acceleration of creep load is realized.Type: ApplicationFiled: May 12, 2022Publication date: August 25, 2022Applicant: NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICSInventors: Zhigang SUN, Xu ZHAO, Yingdong SONG, Xuming NIU, Yaning CHANG, Qiuhong PENG
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METHOD FOR COMPILING EQUIVALENT ACCELERATION SPECTRUM OF CREEP UNDER VARIABLE TEMPERATURES AND LOADS
Publication number: 20220260468Abstract: Disclosed is a method for compiling an equivalent acceleration spectrum of creep under variable temperatures and loads. The method includes following steps: respectively carrying out a material high-temperature tensile test, material high-temperature creep tests and creep tests under two-stage variable temperatures and loads, and calculating values of a parameter p in a creep damage accumulation model under two-stage variable temperatures and loads; based on a nonlinear damage accumulation model under multi-stage variable temperatures and loads, calculating a damage D caused by a multi-stage variable temperatures and loads creep load spectrum by utilizing values of parameter p; based on the principle of consistency of damage D, transforming the multi-stage variable temperatures and loads creep load spectrum into an equivalent acceleration spectrum of a first-order maximum creep load, and finally compiling the equivalent acceleration spectrum of creep under variable temperatures and loads.Type: ApplicationFiled: April 29, 2022Publication date: August 18, 2022Applicant: NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICSInventors: Yingdong SONG, Xu ZHAO, Zhigang SUN, Xuming NIU, Yaning CHANG, Qiuhong PENG