Patents by Inventor Jiangang Hu
Jiangang Hu 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: 20230400845Abstract: An industrial system and a method including using a processor, estimating a reliability of a component of an industrial system using a prognostic model program, using the processor, updating weighting vector parameters of the prognostic model program based on collected data and a previous reliability estimate using machine learning, and using the processor, selectively generating a warning based on comparison of the reliability with a threshold and/or deviation of weighting vector parameters.Type: ApplicationFiled: June 13, 2022Publication date: December 14, 2023Applicant: Rockwell Automation Technologies, Inc.Inventors: Yujia Cui, Jiangang Hu, Rangarajan Tallam, Robert J. Miklosovic
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Publication number: 20230176798Abstract: Provided is an image forming system that can find an authenticated image forming apparatus from a mobile terminal. The installation transmitting unit transmits the installation location information to the server. The position acquisition unit acquires position information. The location presentation unit receives the installation location information indicating the installation location of the image forming apparatus close to the position information from the server and presents it to the user. The location acquisition unit acquires installation location information from each of the plurality of image forming apparatuses. When authenticated by the authentication unit, the location search unit searches for the installation location information stored in the storage unit based on the position information and transmits it to the terminal. The confidential document acquisition unit acquires the confidential document in response to an instruction from the terminal authenticated by the server.Type: ApplicationFiled: December 2, 2021Publication date: June 8, 2023Applicant: KYOCERA Document Solutions Inc.Inventor: Jiangang Hu
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Patent number: 11669285Abstract: Provided is an image forming system that can find an authenticated image forming apparatus from a mobile terminal. The installation transmitting unit transmits the installation location information to the server. The position acquisition unit acquires position information. The location presentation unit receives the installation location information indicating the installation location of the image forming apparatus close to the position information from the server and presents it to the user. The location acquisition unit acquires installation location information from each of the plurality of image forming apparatuses. When authenticated by the authentication unit, the location search unit searches for the installation location information stored in the storage unit based on the position information and transmits it to the terminal. The confidential document acquisition unit acquires the confidential document in response to an instruction from the terminal authenticated by the server.Type: GrantFiled: December 2, 2021Date of Patent: June 6, 2023Assignee: KYOCERA Document Solutions Inc.Inventor: Jiangang Hu
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Patent number: 11573754Abstract: Provided is an information processing apparatus that automatically controls the execution order of print jobs. For example, the image forming apparatus is an information processing apparatus for processing the print jobs. A time deviation calculation unit sets a window of a specific length in the print queue in which the print jobs are stored. A time deviation calculation unit calculates total print time and deviation of the print time of the print jobs in the window. The print control unit controls the execution order of the print jobs in the window based on the total print time and the deviation calculated by the time deviation calculation unit. The output unit outputs the print jobs in the execution order controlled by the print control unit.Type: GrantFiled: November 11, 2021Date of Patent: February 7, 2023Assignee: KYOCERA Document Solutions Inc.Inventor: Jiangang Hu
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Patent number: 11402436Abstract: A power conversion system includes a sensing circuit to sense a system voltage of a DC bus circuit with a first DC bus terminal with a first voltage positive relative to a second voltage of a second DC bus terminal. The sensing circuit includes a first capacitor having a first terminal coupled to the second DC bus terminal, and a second terminal; a second capacitor having a first terminal coupled to the second terminal of the first capacitor, and a second terminal coupled to a reference node; and a resistive divider circuit coupled across the first capacitor and having an output terminal that delivers a voltage signal corresponding to a voltage across the first capacitor.Type: GrantFiled: April 15, 2020Date of Patent: August 2, 2022Assignee: Rockwell Automation Technologies, Inc.Inventors: Jiangang Hu, Brian P. Brown, Lixiang Wei, Andrew J. Roberts
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Publication number: 20210325478Abstract: A power conversion system includes a sensing circuit to sense a system voltage of a DC bus circuit with a first DC bus terminal with a first voltage positive relative to a second voltage of a second DC bus terminal. The sensing circuit includes a first capacitor having a first terminal coupled to the second DC bus terminal, and a second terminal; a second capacitor having a first terminal coupled to the second terminal of the first capacitor, and a second terminal coupled to a reference node; and a resistive divider circuit coupled across the first capacitor and having an output terminal that delivers a voltage signal corresponding to a voltage across the first capacitor.Type: ApplicationFiled: April 15, 2020Publication date: October 21, 2021Applicant: Rockwell Automation Technologies, Inc.Inventors: Jiangang Hu, Brian P. Brown, Lixiang Wei, Andrew J. Roberts
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Patent number: 11025052Abstract: Power converters, protection systems and methods to protect a precharge circuit in which a precharge resistor voltage is indirectly monitored during a normal operating mode, and a rectifier and an inverter are selectively disabled in response to the indirectly measured precharge resistor voltage indicating a fault in a precharge circuit SCR.Type: GrantFiled: January 22, 2018Date of Patent: June 1, 2021Assignee: Rockwell Automation Technologies, Inc.Inventors: Andrew J. Roberts, Yogesh P. Patel, Jiangang Hu, Lixiang Wei
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Patent number: 10955489Abstract: Power conversion systems, disclosed examples include power conversion systems, ground fault detection apparatus and methods to detect and identify ground faults in a power conversion system using AC coupling to sense a system voltage to determine a leakage flux linkage, and to identify a faulted converter phase based on a phase shift angle of the leakage flux linkage.Type: GrantFiled: October 15, 2019Date of Patent: March 23, 2021Assignee: Rockwell Automation Technologies, Inc.Inventors: Rangarajan M. Tallam, Jiangang Hu, Brian P. Brown
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Patent number: 10725116Abstract: A method and controller to automatically determine a grounding condition of a motor drive, in which an inverter is operated at a predetermined frequency while a load resistor is connected between a single phase of a motor drive inverter output and a reference node, a leakage flux linkage value is computed according to a neutral-ground voltage of the motor drive, and a processor determines whether the motor drive is solid grounded, high-resistance grounded, or floating according to the leakage flux linkage value. In certain examples, the processor automatically turns the inverter off while the load resistor is connected between the single phase of the inverter output and the reference node, and automatically determines whether the motor drive is delta corner grounded according to the neutral-ground voltage.Type: GrantFiled: January 4, 2018Date of Patent: July 28, 2020Assignee: Rockwell Automation Technologies, Inc.Inventors: Lixiang Wei, Jiangang Hu, Jeffrey D. McGuire
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Patent number: 10564207Abstract: Power conversion systems, ground fault detection apparatus and methods to detect and identify ground faults in a power conversion system using AC coupling to sense a system voltage to determine a leakage flux linkage, and to identify a faulted converter phase based on a phase shift angle of the leakage flux linkage.Type: GrantFiled: January 19, 2017Date of Patent: February 18, 2020Assignee: Rockwell Automation Technologies, Inc.Inventors: Rangarajan M. Tallam, Jiangang Hu, Brian P. Brown
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Publication number: 20200041559Abstract: Power conversion systems, disclosed examples include power conversion systems, ground fault detection apparatus and methods to detect and identify ground faults in a power conversion system using AC coupling to sense a system voltage to determine a leakage flux linkage, and to identify a faulted converter phase based on a phase shift angle of the leakage flux linkage.Type: ApplicationFiled: October 15, 2019Publication date: February 6, 2020Applicant: Rockwell Automation Technologies, Inc.Inventors: Rangarajan M. Tallam, Jiangang Hu, Brian P. Brown
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Publication number: 20190229521Abstract: Power converters, protection systems and methods to protect a precharge circuit in which a precharge resistor voltage is indirectly monitored during a normal operating mode, and a rectifier and an inverter are selectively disabled in response to the indirectly measured precharge resistor voltage indicating a fault in a precharge circuit SCR.Type: ApplicationFiled: January 22, 2018Publication date: July 25, 2019Applicant: Rockwell Automation Technologies, Inc.Inventors: Andrew J. Roberts, Yogesh P. Patel, Jiangang Hu, Lixiang Wei
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Publication number: 20190204374Abstract: A method and controller to automatically determine a grounding condition of a motor drive, in which an inverter is operated at a predetermined frequency while a load resistor is connected between a single phase of a motor drive inverter output and a reference node, a leakage flux linkage value is computed according to a neutral-ground voltage of the motor drive, and a processor determines whether the motor drive is solid grounded, high-resistance grounded, or floating according to the leakage flux linkage value. In certain examples, the processor automatically turns the inverter off while the load resistor is connected between the single phase of the inverter output and the reference node, and automatically determines whether the motor drive is delta corner grounded according to the neutral-ground voltage.Type: ApplicationFiled: January 4, 2018Publication date: July 4, 2019Applicant: Rockwell Automation Technologies, Inc.Inventors: Lixiang Wei, Jiangang Hu, Jeffrey D. McGuire
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Patent number: 10302688Abstract: Power conversion systems, disclosed examples include power conversion systems, ground fault detection apparatus and methods to detect and identify ground faults in a power conversion system using AC coupling to sense a system voltage to determine a leakage flux linkage, and to identify a faulted converter phase based on a phase shift angle of the leakage flux linkage.Type: GrantFiled: January 19, 2017Date of Patent: May 28, 2019Assignee: Rockwell Automation Technologies, Inc.Inventors: Jiangang Hu, Zhijun Liu, Jeffrey D. McGuire, Lixiang Wei
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Patent number: 10217555Abstract: For reducing volume requirements and magnetic flux leakage, a compact inductor includes a first planar core with a first core thickness along a first axis orthogonal to a plane of the first planar core. In addition, the inductor includes a second planar core disposed parallel to the first planar core with a second core thickness along the first axis. The inductor further includes a plurality of electrical windings disposed between and adjacent to an inside plane of the first planar core and an inside plane of the second planar core. The electrical windings may include insulated electrical wires. No magnetic teeth may be disposed between the first planar core and the second planar core. The first axis is parallel to a magnetic axis of each electrical winding.Type: GrantFiled: December 17, 2015Date of Patent: February 26, 2019Assignee: Rockwell Automation Technologies, Inc.Inventors: Xikai Sun, Wei Qian, Shaofeng Zhang, Haihui Lu, Lixiang Wei, Yuan Xiao, Jiangang Hu, Richard A. Lukaszewski
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Publication number: 20180183348Abstract: Power conversion systems, discharge circuits and methods are disclosed for discharging a DC bus conditioner capacitor connected between a neutral node and a first reference node in a DC bus circuit of a power conversion system, in which a DC bus voltage of the power conversion system is monitored, and a discharge control DC power supply is activated in response to the DC bus voltage transitioning below a first threshold voltage to activate a switching circuit to connect a discharge resistor between the first reference node and a DC bus terminal of the DC bus circuit to at least partially discharge the conditioner capacitor through the discharge resistor.Type: ApplicationFiled: December 23, 2016Publication date: June 28, 2018Applicant: Rockwell Automation Technologies, Inc.Inventors: Jiangang Hu, Lixiang Wei, James A. Ulrich
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Patent number: 10008952Abstract: Power conversion systems, discharge circuits and methods are disclosed for discharging a DC bus conditioner capacitor connected between a neutral node and a first reference node in a DC bus circuit of a power conversion system, in which a DC bus voltage of the power conversion system is monitored, and a discharge control DC power supply is activated in response to the DC bus voltage transitioning below a first threshold voltage to activate a switching circuit to connect a discharge resistor between the first reference node and a DC bus terminal of the DC bus circuit to at least partially discharge the conditioner capacitor through the discharge resistor.Type: GrantFiled: December 23, 2016Date of Patent: June 26, 2018Assignee: Rockwell Automation Technologies, Inc.Inventors: Jiangang Hu, Lixiang Wei, James A. Ulrich
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Patent number: 9787210Abstract: Precharging systems and methods are presented for precharging a DC bus circuit in a power conversion system, in which precharging current is connected through a precharging resistance coupled between only a single AC input line and the DC bus circuit when the DC bus voltage is less than a non-zero threshold, and a controller individually activates controllable rectifier switching devices when the DC bus voltages greater than or equal to the threshold using DC gating or pulse width modulation to selectively provide a bypass path around the precharging resistance for normal load currents in the power conversion system.Type: GrantFiled: January 14, 2015Date of Patent: October 10, 2017Assignee: Rockwell Automation Technologies, Inc.Inventors: Yogesh P. Patel, Rangarajan Tallam, Brian P. Brown, Jiangang Hu, James J. Campbell
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Publication number: 20170178782Abstract: For reducing volume requirements and magnetic flux leakage, a compact inductor includes a first planar core with a first core thickness along a first axis orthogonal to a plane of the first planar core. In addition, the inductor includes a second planar core disposed parallel to the first planar core with a second core thickness along the first axis. The inductor further includes a plurality of electrical windings disposed between and adjacent to an inside plane of the first planar core and an inside plane of the second planar core. The electrical windings may include insulated electrical wires. No magnetic teeth may be disposed between the first planar core and the second planar core. The first axis is parallel to a magnetic axis of each electrical winding.Type: ApplicationFiled: December 17, 2015Publication date: June 22, 2017Inventors: Xikai Sun, Wei Qian, Shaofeng Zhang, Haihui Lu, Lixiang Wei, Yuan Xiao, Jiangang Hu, Richard A. Lukaszewski
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Patent number: 9684026Abstract: A PLC or other industrial controller programmed to locate ground faults in a networked high resistance grounded multi-drive system through network communications messaging to automatically place networked motor drives in various operational states to isolate individual drives for ground fault identification testing and selectively identify individual drives as suspected ground fault locations.Type: GrantFiled: October 8, 2013Date of Patent: June 20, 2017Assignee: Rockwell Automation Technologies, Inc.Inventors: Lixiang Wei, Jeffrey D. McGuire, Jiangang Hu, Zhijun Liu