Patents by Inventor Da Zhang

Da Zhang 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).

  • Patent number: 11370663
    Abstract: The present disclosure relates to a method for production of nitrogen-doped single wall carbon nanohorns from anode graphite of wasted lithium-ion batteries. The method includes the following steps: a first step: forming recycled graphite powder into graphite blocks; and, a second contact step: when the first step is completed, using a DC arc plasma device to produce the graphite blocks into N-SWCNHs.
    Type: Grant
    Filed: December 13, 2021
    Date of Patent: June 28, 2022
    Assignee: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Feng Liang, Zhipeng Xie, Zhenggang Tang, Xiecheng Yang, Da Zhang, Minjie Hou, Yao Kang, Bin Yang, Yongnian Dai
  • Publication number: 20220185672
    Abstract: The present disclosure relates to a method for production of nitrogen-doped single wall carbon nanohorns from anode graphite of wasted lithium-ion batteries. The method includes the following steps: a first step: forming recycled graphite powder into graphite blocks; and, a second contact step: when the first step is completed, using a DC arc plasma device to produce the graphite blocks into N-SWCNHs.
    Type: Application
    Filed: December 13, 2021
    Publication date: June 16, 2022
    Inventors: FENG LIANG, ZHIPENG XIE, ZHENGGANG TANG, XIECHENG YANG, DA ZHANG, MINJIE HOU, YAO KANG, BIN YANG, YONGNIAN DAI
  • Patent number: 11325202
    Abstract: The present disclosure provides a system and method for measuring energy conversion efficiency of an inertia friction welding (IFW) process in a non-contact manner. The system includes an IFW machine, a Hall sensor, a data acquisition module, a processing module and a stabilized direct current (DC) power supply. The stabilized DC power supply provides electrical energy for the Hall sensor. The Hall sensor is provided beside a flywheel of the IFW machine, so that the flywheel is within a detection range of the Hall sensor. A magnet is provided on the flywheel. The data acquisition module acquires a Hall electric potential change caused by a relative movement between the magnet and the Hall sensor during the IFW process, and transmits the Hall electric potential change to the processing module to calculate the energy conversion efficiency of the IFW machine.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: May 10, 2022
    Assignee: Shandong University
    Inventors: Guoliang Qin, Fan Yang, Da Zhang
  • Publication number: 20210257957
    Abstract: A three-phase motor drive system for operation from a three-phase alternating current (AC) power source. The three-phase motor drive system includes a three-phase hybrid active harmonic filter (AHF) having an input operably connected to the three-phase AC power source, the three-phase hybrid active harmonic filter comprising an active harmonic filter operably connected in parallel with the three-phase AC power source and a three-phase AC reactor disposed in series between the input and an output of the hybrid active harmonic filter. The three-phase motor drive system also includes a three-phase variable frequency motor drive configured to provide excitation signals to a three-phase motor; and a three-phase AC motor operably connected to the three-phase variable frequency motor drive, the three-phase AC motor responsive the excitation signals.
    Type: Application
    Filed: July 24, 2019
    Publication date: August 19, 2021
    Inventors: Da Zhang, Bassel Al-Annouf
  • Publication number: 20210222758
    Abstract: The present invention relates to a class of over-constrained two-rotation parallel mechanism with same kinematics, which comprises a base, a moving platform and four branches connecting the base and the moving platform, wherein the base and the moving platform are equilateral triangles, both ends of each of the first branch, the second branch and the third branch are respectively connected to end points of the base and the moving platform, both ends of the fourth branch are respectively connected to center points of the base and the moving platform, the first branch and the third branch both consist of a first rotating pair. The parallel mechanism of the present invention has a large rotation space and high rigidity, and can be used for positioning equipment such as missile launchers.
    Type: Application
    Filed: January 7, 2021
    Publication date: July 22, 2021
    Inventors: Nijia Ye, Bo Hu, Jinjun Zhao, Da Zhang, Luzhou Xu, Kai Wang, Tengfei Xie
  • Publication number: 20210079246
    Abstract: Fusing nanowire inks are described that can also comprise a hydrophilic polymer binder, such as a cellulose based binder. The fusing nanowire inks can be deposited onto a substrate surface and dried to drive the fusing process. Transparent conductive films can be formed with desirable properties.
    Type: Application
    Filed: November 19, 2020
    Publication date: March 18, 2021
    Inventors: Ying-Syi Li, Xiqiang Yang, Yu Kambe, Xiaofeng Chen, Hua Gu, Steven Michael Lam, Melanie Maniko Inouye, Arthur Yung-Chi Cheng, Alex Da Zhang Tan, Christopher Steven Scully, Ajay Virkar
  • Publication number: 20210031295
    Abstract: The present disclosure provides a system and method for measuring energy conversion efficiency of an inertia friction welding (IFW) process in a non-contact manner. The system includes an IFW machine, a Hall sensor, a data acquisition module, a processing module and a stabilized direct current (DC) power supply. The stabilized DC power supply provides electrical energy for the Hall sensor. The Hall sensor is provided beside a flywheel of the IFW machine, so that the flywheel is within a detection range of the Hall sensor. A magnet is provided on the flywheel. The data acquisition module acquires a Hall electric potential change caused by a relative movement between the magnet and the Hall sensor during the IFW process, and transmits the Hall electric potential change to the processing module to calculate the energy conversion efficiency of the IFW machine.
    Type: Application
    Filed: July 28, 2020
    Publication date: February 4, 2021
    Applicant: Shandong University
    Inventors: Guoliang Qin, Fan Yang, Da Zhang
  • Patent number: 10870772
    Abstract: Fusing nanowire inks are described that can also comprise a hydrophilic polymer binder, such as a cellulose based binder. The fusing nanowire inks can be deposited onto a substrate surface and dried to drive the fusing process. Transparent conductive films can be formed with desirable properties.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: December 22, 2020
    Assignee: C3Nano Inc.
    Inventors: Ying-Syi Li, Xiqiang Yang, Yu Kambe, Xiaofeng Chen, Hua Gu, Steven Michael Lam, Melanie Maniko Inouye, Arthur Yung-Chi Cheng, Alex Da Zhang Tan, Christopher Steven Scully, Ajay Virkar
  • Publication number: 20200251980
    Abstract: A pulse width modulation (PWM) interleaving system is provided. The PWM interleaving system includes active harmonic filters (AHFs). The AHFs are disposed in parallel with each other and with a load. The AHFs are electrically coupled to a common coupling point that is electrically interposed between a grid and the load. The AHFs are configured to affect, by PWM, a characteristic of current flowing between the grid and the load. The PWM interleaving system further includes a controller operably coupled to the AHFs and configured to synchronize the PWMs of the AHFs to thereby cancel ripple currents propagating towards the grid.
    Type: Application
    Filed: September 26, 2018
    Publication date: August 6, 2020
    Inventors: Da Zhang, Thomas Bekasi, Ismail Agirman, Bassel Al-Annouf, Christopher S. Czerwinski, Jeffrey M. Izard
  • Patent number: 10686909
    Abstract: A satellite positioning field, a method for data subscribing and publishing in large scale CORS station broadcast system and device thereof are disclosed. In the process of data subscribing, publishing and establishing a connection, the whole broadcast system combines the subscribing, publishing and upstream and downstream data management together, shields the specific machine information, the users only need to care about what data they need, the system framework itself flexibly establishes the connection with the upstream work node according to the route selection strategy, which facilitates the serialization and management of the upstream and downstream modules, saves the cost of repeated development.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: June 16, 2020
    Assignee: QIANXUN SPATIAL INTELLIGENCE INC.
    Inventors: Tiliang Zhang, Da Zhang
  • Patent number: 10554116
    Abstract: A pulse width modulation (PWM) based active harmonic filter (AHF) system including a controller configured to adjust a load on the system from a first to a second load, the first load being greater than the second load, wherein the controller is configured to adjust a frequency of the system from a first to a second frequency when the load is equal to the second load, and wherein the second frequency is greater than the first; a first harmonic compensator configured to filter a first order of harmonics of a load when the load is equal to the second load; and a second harmonic compensator configured to filter a second order of harmonics of the load in parallel with the first order of harmonics when the load is equal to the second load and frequency equals the second frequency, the second order of harmonics being greater than the first order.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: February 4, 2020
    Assignee: CARRIER CORPORATION
    Inventors: Da Zhang, Bassel Al-Annouf
  • Patent number: 10385852
    Abstract: A method for expulsion of a fluid inside a compressor at start-up including the steps: applying a first signal to the motor windings for a first duration of time to align the motor rotor to the initial position; applying a second signal to the motor windings to start rotation of the compressor shaft; applying a third signal to the motor windings for a second duration of time to hold the compressor shaft in place; and applying a fourth signal to the motor windings to accelerate the motor to an operational speed.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: August 20, 2019
    Assignee: CARRIER CORPORATION
    Inventors: Da Zhang, Richard T. Pandzik, William Perdikakis, Mark E. Rollins
  • Publication number: 20190140535
    Abstract: A pulse width modulation (PWM) based active harmonic filter (AHF) system including a controller configured to adjust a load on the system from a first to a second load, the first load being greater than the second load, wherein the controller is configured to adjust a frequency of the system from a first to a second frequency when the load is equal to the second load, and wherein the second frequency is greater than the first; a first harmonic compensator configured to filter a first order of harmonics of a load when the load is equal to the second load; and a second harmonic compensator configured to filter a second order of harmonics of the load in parallel with the first order of harmonics when the load is equal to the second load and frequency equals the second frequency, the second order of harmonics being greater than the first order.
    Type: Application
    Filed: November 7, 2018
    Publication date: May 9, 2019
    Inventors: Da Zhang, Bassel Al-Annouf
  • Patent number: 10184066
    Abstract: A coating material, including a bottom layer, a middle layer and a surface layer. The bottom layer is an epoxy mortar having a thickness of between 1 and 3 mm, the middle layer is an epoxy resin adhesive having a thickness of between 0.1 and 0.5 mm, and the surface layer is a nanomaterial-modified polyaspartic having a thickness of between 0.3 and 0.5 mm. The epoxy resin adhesive has a viscosity of between 50 and 200 mPa·s.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: January 22, 2019
    Assignee: CHANGJIANG RIVER SCIENTIFIC RESEARCH INSTITUTE, CHANGJIANG WATER RESOURCES COMMISSION
    Inventors: Liang Chen, Zhen Li, Zaiqin Wang, Huaquan Yang, Wei Han, Chengjing Xiao, Tao Wei, Xiaomei Shao, Jing Feng, Lingmin Liao, Jian Zhang, Da Zhang, Xiaohu Yan
  • Publication number: 20190010347
    Abstract: Fusing nanowire inks are described that can also comprise a hydrophilic polymer binder, such as a cellulose based binder. The fusing nanowire inks can be deposited onto a substrate surface and dried to drive the fusing process. Transparent conductive films can be formed with desirable properties.
    Type: Application
    Filed: September 11, 2018
    Publication date: January 10, 2019
    Inventors: Ying-Syi Li, Xiqiang Yang, Yu Kambe, Xiaofeng Chen, Hua Gu, Steven Michael LAm, Melanie Maniko Inouye, Arthur Yung-Chi Cheng, Alex Da Zhang Tan, Christopher Steven Scully, Ajay Virkar
  • Patent number: 10100213
    Abstract: Fusing nanowire inks are described that can also comprise a hydrophilic polymer binder, such as a cellulose based binder. The fusing nanowire inks can be deposited onto a substrate surface and dried to drive the fusing process. Transparent conductive films can be formed with desirable properties.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: October 16, 2018
    Assignee: C3Nano Inc.
    Inventors: Ying-Syi Li, Xiqiang Yang, Yu Kambe, Xiaofeng Chen, Hua Gu, Steven Michael Lam, Melanie Mariko Inouye, Authur Yung-Chi Cheng, Alex Da Zhang Tan, Christopher Steven Scully, Ajay Virkar
  • Publication number: 20180109646
    Abstract: The present invention relates to the satellite positioning field and discloses a method for data subscribing and publishing in large scale CORS station broadcast system and device thereof. In the process of data subscribing, publishing and establishing a connection, the whole broadcast system combines the subscribing, publishing and upstream and downstream data management together, shields the specific machine information, the users only need to care about what data they need, the system framework itself flexibly establishes the connection with the upstream work node according to the route selection strategy, which facilitates the serialization and management of the upstream and downstream modules, saves the cost of repeated development.
    Type: Application
    Filed: October 18, 2017
    Publication date: April 19, 2018
    Inventors: Tiliang ZHANG, Da ZHANG
  • Patent number: 9774275
    Abstract: Platforms and techniques are provided for controlling a power inverter using space vector pulse width modulation (PWM) operation. The inverter converts a direct voltage (DC) power source to an alternating voltage (AC) output by controlling a set of three phase switches. A bootstrap capacitor is coupled to each switch. When each switch in the set of three phase switches is in a zero state, the coupled bootstrap capacitor can charge from the current delivered in a corresponding pulse width modulation (PWM) signal. The bootstrap capacitor can deliver stored power when a one (high) switch state is entered. Each switch can be maintained at a zero state, and thus charge the bootstrap capacitor, for at least two consecutive segments of the PWM cycle. Pre-charging of the bootstrap capacitor is ensured before power delivery is required.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: September 26, 2017
    Assignee: CARRIER CORPORATION
    Inventors: William Perdikakis, Da Zhang, Thomas Gietzold
  • Publication number: 20160369118
    Abstract: Fusing nanowire inks are described that can also comprise a hydrophilic polymer binder, such as a cellulose based binder. The fusing nanowire inks can be deposited onto a substrate surface and dried to drive the fusing process. Transparent conductive films can be formed with desirable properties.
    Type: Application
    Filed: August 25, 2016
    Publication date: December 22, 2016
    Inventors: Ying-Syi Li, Xiqiang Yang, Yu Kambe, Xiaofeng Chen, Hua Gu, Steven Michael Lam, Melanie Mariko Inouye, Authur Yung-Chi Cheng, Alex Da Zhang Tan, Christopher Steven Scully, Ajay Virkar
  • Patent number: 9447301
    Abstract: Fusing nanowire inks are described that can also comprise a hydrophilic polymer binder, such as a cellulose based binder. The fusing nanowire inks can be deposited onto a substrate surface and dried to drive the fusing process. Transparent conductive films can be formed with desirable properties.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: September 20, 2016
    Assignee: C3Nano Inc.
    Inventors: Ying-Syi Li, Xiqiang Yang, Yu Kambe, Xiaofeng Chen, Hua Gu, Steven Michael Lam, Melanie Mariko Inouye, Arthur Yung-Chi Cheng, Alex Da Zhang Tan, Christopher S. Scully, Ajay Virkar