Patents by Inventor Zhe Zhang

Zhe 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: 11126196
    Abstract: The described positional awareness techniques employing sensory data gathering and analysis hardware with reference to specific example implementations implement improvements in the use of sensors, techniques and hardware design that can enable specific embodiments to provide positional awareness to machines with improved speed and accuracy. The sensory data are gathered from an operational camera and one or more auxiliary sensors.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: September 21, 2021
    Assignee: Trifo, Inc.
    Inventors: Zhe Zhang, Grace Tsai, Shaoshan Liu
  • Patent number: 11101764
    Abstract: An electric motor drive system is provided. It includes a rotor having permanent magnets arranged therein and a stator surrounding the rotor an inverter having switches arranged therein, the switches operable to draw current from a direct current bus and operate the electric machine through windings of the stator and a controller operable to receive a source current limit, IS, and a source voltage limit, VDC, both associated with the direct current bus is also provided. The invertor is responding to a torque demand to operate the switches of the inverter to generate an alternating current corresponding to the torque demand and according to a torque limit defined by a source current torque limit corresponding to the source current limit when the source current torque limit is less than or equal to a source voltage torque limit corresponding to the source voltage limit.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: August 24, 2021
    Assignee: Steering Solutions IP Holding Corporation
    Inventors: Zhe Zhang, Prerit Pramod, Krishna Namburi
  • Patent number: 11086991
    Abstract: A method for active risk control based on an intelligent interaction comprises: acquiring contact information of a risk implementer; actively interacting with the risk implementer based on the contact information of the risk implementer and generating a record of the active interaction; processing the record of the active interaction and extracting risk characteristics from it; categorizing risks according to the risk characteristics; and implementing different risk controls on the risks.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: August 10, 2021
    Assignee: ADVANCED NEW TECHNOLOGIES CO., LTD.
    Inventors: Lei Yao, Yifeng Ying, Na Li, Zhe Zhang
  • Publication number: 20210239191
    Abstract: A variable acceleration curved surface spiral gear transmission mechanism for accelerated oscillator damper damping systems is disclosed. Through the orthogonal orbit planetary gear set moving along the parallel circular arc line guide rail, the concave surface spiral gear and the convex surface spiral gear are meshed at different radii, so as to realize the continuous changing of the speed ratio and changing of the acceleration of the additional mass block. The spiral curve limit guide groove is set on the surface of concave surface spiral gear and convex surface spiral gear, and the changing rate of speed changing ratio is adjusted by designing different spiral curves, and then the acceleration changing rate of additional mass block is controlled.
    Type: Application
    Filed: September 25, 2019
    Publication date: August 5, 2021
    Inventors: Yonggang TAN, Long CHE, Zhe ZHANG, Taifu CHEN, Kun WEN, Kamal AZAZ
  • Publication number: 20210240198
    Abstract: The described positional awareness techniques employing visual-inertial sensory data gathering and analysis hardware with reference to specific example implementations implement improvements in the use of sensors, techniques and hardware design that can enable specific embodiments to provide positional awareness to machines with improved speed and accuracy.
    Type: Application
    Filed: April 19, 2021
    Publication date: August 5, 2021
    Applicant: Trifo, Inc.
    Inventors: Grace TSAI, Zhe ZHANG, Shaoshan LIU
  • Publication number: 20210218441
    Abstract: Example communications methods and apparatus are described. One example method includes generating a first signal by a base station. The base station performs cyclic delay diversity (CDD) weighted processing on the first signal to obtain a second signal, and performs densified beam weighted processing on the second signal to obtain a third signal. The third signal is sent by the base station via an antenna. According to the foregoing method, the CDD weighted processing is performed on the first signal generated by the base station, so that time diversity can be obtained when the first signal is transmitted. In addition, the densified beam weighted processing is performed on the second signal obtained after the CDD weighted processing, so that a quantity of beams scanned by the base station can be increased.
    Type: Application
    Filed: March 29, 2021
    Publication date: July 15, 2021
    Inventors: Daowei WANG, Jiang GUO, Zhe ZHANG, Xiaobo YANG
  • Publication number: 20210197988
    Abstract: Disclosed is an environment forming apparatus suitable for biological cultivation in extraterrestrial space. The apparatus includes a shell and a biological cabin configured in an upper space of the shell. A light management system for importing light of biological growth from external world is configured in the upper space, a thermal management system for at least balancing a temperature of the upper space and a water supplying system and configured for providing water for creatures growth are both configured on the shell. The biological cabin and the like are set at the appropriate part of the shell, an environment which is relatively suitable for biological growth or cultivation can be created and simulated on an extraterrestrial star, a condition is provided for ecological cultivation of the extraterrestrial space, an ecosystem of the extraterrestrial space can be formed, smooth extraterrestrial space biological experiment process is guaranteed.
    Type: Application
    Filed: December 24, 2020
    Publication date: July 1, 2021
    Inventors: Gengxin XIE, Yuanxun ZHANG, Xiaojun YANG, He ZHANG, Zhe ZHANG, Youwei ZHANG, Xuan ZHOU, Miaocheng WENG, Xi WANG
  • Publication number: 20210192774
    Abstract: The described positional awareness techniques employing visual-inertial sensory data gathering and analysis hardware with reference to specific example implementations implement improvements in the use of sensors, techniques and hardware design that can enable specific embodiments to provide positional awareness to machines with improved speed and accuracy.
    Type: Application
    Filed: March 5, 2021
    Publication date: June 24, 2021
    Applicant: Trifo, Inc.
    Inventors: Grace TSAI, Zhe ZHANG, Shaoshan LIU
  • Patent number: 11037133
    Abstract: Provided is a method for selectively displaying information regarding activity in a geographic area. The method may include receiving data regarding a plurality of card-present payment transactions that have been conducted in the geographic area during a time interval, determining a plurality of segments of the geographic area, assigning each of the transactions to the segment in which the transaction was conducted, determining aggregate transaction data for each of the segments based on data regarding the transactions that have been assigned to that segment; generating a transaction index for each segment based on a comparison of the aggregate transaction data of that segment with aggregate transaction data of at least one different segment and/or least one predetermined metric, and generating a visual representation comprising data regarding the transaction index of at least one of the segments. A system and computer program product are also provided.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: June 15, 2021
    Assignee: Visa International Service Association
    Inventors: Paul Rollings, Debesh Kumar, Christopher DeMartini, Lawson Lau, Guangyu Wang, Zhe Zhang
  • Publication number: 20210174097
    Abstract: The described positional awareness techniques employing visual-inertial sensory data gathering and analysis hardware with reference to specific example implementations implement improvements in the use of sensors, techniques and hardware design that can enable specific embodiments to provide positional awareness to machines with improved speed and accuracy.
    Type: Application
    Filed: February 22, 2021
    Publication date: June 10, 2021
    Applicant: Trifo, Inc.
    Inventors: Grace TSAI, Shaoshan LIU, Zhe ZHANG
  • Publication number: 20210165022
    Abstract: Systems and methods for compensating for a current measurement offset error in a permanent magnet synchronous motor (PMSM) drive are disclosed. The systems and methods include reading an output voltage command signal, extracting a signature of a current measurement offset error from the output voltage command signal, and compensating, based on the signature, for the current measurement offset error in a closed-loop using a feedback path.
    Type: Application
    Filed: November 29, 2019
    Publication date: June 3, 2021
    Inventors: Prerit Pramod, Zhe Zhang, Krishna MPK Namburi, Infane O. Lowe, Aparna Saha
  • Publication number: 20210159827
    Abstract: A system and method for improved anti-windup that minimizes supply current draw under voltage saturated current control operation of synchronous motor drives are provided. The system and method use a voltage limiting module configured to receive a pre-limit voltage command and generate a post-limit voltage command when the motor control system reaches configured threshold; and an anti-windup module configured to determine a voltage difference between the post-limit and pre-limit voltage commands, and compute an anti-windup feedback current using the voltage difference and compensation gains selected to minimize supply current. The compensation gains comprise a gain matrix of values selected to move a motor current trajectory toward a null motor current vector, and the anti-windup module multiplies the gain matrix values by the voltage difference. The anti-windup feedback current and an input current command are then added and provided as an input to the controller.
    Type: Application
    Filed: November 26, 2019
    Publication date: May 27, 2021
    Inventors: Prerit PRAMOD, Zhe ZHANG, Krishna MPK NAMBURI
  • Publication number: 20210156853
    Abstract: The invention discloses a device, a kit and a method for determining whether a biological sample contains misfolded protein or misfolded protein aggregates. The detection device comprises a testing component and a sample applicator, the testing component comprises one or more microporous membranes, and the sample applicator comprises one or more capillary tubes. The kit comprises a dye that is capable of binding to misfolded proteins and microporous membranes. During the detection, the sample to be tested is mixed with the dye to form a mixture. The mixture is taken up by a capillary tube. The liquid outlet of the capillary tube is then place in close contact with the surface of a microporous membrane, allowing the mixture to be drawn from the capillary tube into the microporous membrane. The presence or absence of misfolded proteins in the test sample is determined based on the diffusion of the dye in the membrane, as observed by naked eyes or using an instrument.
    Type: Application
    Filed: November 14, 2018
    Publication date: May 27, 2021
    Inventors: Xingmin Li, Jun XU, Xiaobin TANG, Jay Zhe ZHANG
  • Publication number: 20210155285
    Abstract: Technical solutions are described for controlling operation of an electric machine such as a permanent magnet synchronous motor (PMSM) drive or motor control system to protect against excessive machine current or voltage in a PMSM drive. Systems and methods employ a torque control algorithm for PMSMs that uses the constraints of both machine current and voltage capability in PMSM drives, and online torque command modification according to the maximum allowed torque under these machine current and voltage constraints.
    Type: Application
    Filed: November 25, 2019
    Publication date: May 27, 2021
    Inventors: Haibo LI, Prerit PRAMOD, Krishna MPK NAMBURI, Zhe ZHANG
  • Patent number: 11016650
    Abstract: A method visualizes data sources. A user selects a data source, and the computer system displays a first data visualization according to placement of data fields in shelves of the user interface. The data visualization comprises visual data marks representing the data source. A user selects some of the data marks. In response, the system displays a metric window including a data metric object preview, a summary of the selected data marks, and setting controls. The user provides input to create the data metric object. In response, the system creates the data metric object, including: configuration parameters derived from the first data visualization; an initial extract from the data source according to the configuration parameters; and a schedule for recurring retrieval of data from the data source to update the extract. The system then displays a second data visualization according to the configuration parameters and the extract.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: May 25, 2021
    Assignee: Tableau Software, Inc.
    Inventors: Andrew Herbert Kritzer, Evan Michael McLain, David Robert Potter, Hermann Faith Chong, Caleb Michael Predmore, Keith Ryan Jones, Zachary Page Woodall, Zhe Zhang
  • Publication number: 20210152112
    Abstract: Technical solutions are described for controlling operation of an electric machine such as a permanent magnet synchronous motor (PMSM) drive or motor control system to limit battery current and protect a battery from excessive discharging or charging current from the PMSM drive. Systems and methods employ a torque control algorithm for PMSMs that uses a battery current limit constraint when generating current commands during each of a maximum torque per ampere (MTPA) operation, and maximum torque per voltage (MTPV) operation. Torque search operations are performed in each of the MTPA and MTPV operation regions in a PMSM drive system until current commands are achieved under a given battery current limit constraint and while maintaining maximum voltage utilization throughout all PMSM operation regions.
    Type: Application
    Filed: November 15, 2019
    Publication date: May 20, 2021
    Inventors: Haibo LI, Prerit PRAMOD, Krishna MPK NAMBURI, Zhe ZHANG
  • Publication number: 20210152115
    Abstract: An electric motor drive system is provided. It includes a rotor having permanent magnets arranged therein and a stator surrounding the rotor an inverter having switches arranged therein, the switches operable to draw current from a direct current bus and operate the electric machine through windings of the stator and a controller operable to receive a source current limit, IS, and a source voltage limit, VDC, both associated with the direct current bus is also provided. The invertor is responding to a torque demand to operate the switches of the inverter to generate an alternating current corresponding to the torque demand and according to a torque limit defined by a source current torque limit corresponding to the source current limit when the source current torque limit is less than or equal to a source voltage torque limit corresponding to the source voltage limit.
    Type: Application
    Filed: November 14, 2019
    Publication date: May 20, 2021
    Inventors: Zhe Zhang, Prerit Pramod, Krishna Namburi
  • Patent number: D924506
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: July 6, 2021
    Assignee: TRIFO, INC.
    Inventors: Zhe Zhang, Zhongwei Li
  • Patent number: D924507
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: July 6, 2021
    Assignee: Trifo, Inc.
    Inventors: Zhe Zhang, Zhongwei Li
  • Patent number: D924508
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: July 6, 2021
    Assignee: Trifo, Inc.
    Inventors: Zhe Zhang, Zhongwei Li