Patents by Inventor Dan Teng

Dan Teng 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).

  • Sliding sleeve device
    Patent number: 11933138
    Abstract: A sliding sleeve device has an outer cylinder, a circulation hole being provided in the wall of the outer cylinder; and an inner cylinder provided in an inner cavity of the outer cylinder. In an initial state, the inner cylinder and the outer cylinder are fixed to each other to seal the circulation hole. In a first state, the inner cylinder is movable relative to the outer cylinder, thereby unsealing the circulation hole. A protection mechanism is provided in the circulation hole, which has an inner member located on the radially inner side and an outer member located on the radially outer side.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: March 19, 2024
    Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SINOPEC SOUTHWEST OIL & GAS COMPANY
    Inventors: Zhimin Hou, Dan Hu, Qiang Wang, Yijun Zhou, Jiang Qian, Chen Chen, Tao Liu, Jianfa Ci, Wenfeng Pang, Wenjiang Teng
  • Cascade tuning controller and method of use therefor
    Patent number: 5805447
    Abstract: A cascade tuning controller and a method for use therefor is provided. The control inputs and the control coefficients are multiplied by scaling values. The scaling values are first tuned and the control coefficients are then tuned using a descent-based optimization method in order to optimize system performance.
    Type: Grant
    Filed: June 24, 1997
    Date of Patent: September 8, 1998
    Assignee: Motorola, Inc.
    Inventors: Dan Teng, Shay-Ping T. Wang
  • Method for controlling nonlinear systems
    Patent number: 5680304
    Abstract: A system polynomial is determined using a plurality of system I/O data, wherein the system polynomial expresses the system output in terms of the system input, and wherein the system polynomial has at least one linear term and at least one nonlinear term. A control polynomial is determined, the control polynomial having at least one cancellation term and at least one control term, the at least one cancellation term calculated to cancel the at least one nonlinear term of the system polynomial, and the at least one control term calculated to control the at least one linear term of the system polynomial. A control output signal is generated based on the control polynomial and the control input signal.
    Type: Grant
    Filed: August 21, 1996
    Date of Patent: October 21, 1997
    Assignee: Motorola, Inc.
    Inventors: Shay-Ping Thomas Wang, Dan Teng, David Alan Hayner
  • Auto-tuning controller and method of use therefor
    Patent number: 5649062
    Abstract: In an auto-tuning controller the initial values of control coefficients are found by fitting a control polynomial to control transfer characteristic data. The values are then tuned using a descent-based optimization method.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: July 15, 1997
    Assignee: Motorola, Inc.
    Inventors: Dan Teng, Shay-Ping T. Wang
  • Auto-scaling controller and method of use therefor
    Patent number: 5633987
    Abstract: An auto-scaling controller and a method for use therefor is provided. The control inputs and the control coefficients are multiplied by scaling values. The scaling values are then tuned using a descent-based optimization method in order to optimize system performance.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: May 27, 1997
    Assignee: Motorola, Inc.
    Inventors: Dan Teng, Shay-Ping T. Wang
  • Controller for nonlinear systems
    Patent number: 5550732
    Abstract: A system polynomial is determined using a plurality of system I/O data, wherein the system polynomial expresses the system output in terms of the system input, and wherein the system polynomial has at least one linear term and at least one nonlinear term. A control polynomial is determined, the control polynomial having at least one cancellation term and at least one control term, the at least one cancellation term calculated to cancel the at least one nonlinear term of the system polynomial, and the at least one control term calculated to control the at least one linear term of the system polynomial. A control output signal is generated based on the control polynomial and the control input signal.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: August 27, 1996
    Assignee: Motorola, Inc.
    Inventors: Shay-Ping T. Wang, Dan Teng, David A. Hayner
  • Polynomial controller for nonlinear systems
    Patent number: 5546302
    Abstract: A system polynomial is determined using a plurality of system I/O data, wherein the system polynomial expresses the system output in terms of the system input, and wherein the system polynomial has r' terms including at least one linear term and at least one nonlinear term, the r' terms found using a regression subsets technique. A control polynomial is determined, the control polynomial having at least one cancellation term and at least one control term, the at least one cancellation term calculated to cancel the at least one nonlinear term of the system polynomial, and the at least one control term calculated to control the at least one linear term of the system polynomial. A control output signal is generated based on the control polynomial and the control input signal.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: August 13, 1996
    Assignee: Motorola, Inc.
    Inventors: Shay-Ping T. Wang, Dan Teng, Bruce E. Stuckman, David A. Hayner