Patents by Inventor Yifei MA

Yifei MA 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: 11592351
    Abstract: Disclosed is an urban non-metallic pipeline leakage location method, the method comprise the following steps: determining whether leakage occurs in a pipeline through numerical simulation law analysis or a Markov chain-based flow analysis method; for a leaking pipeline, establishing an inverse-transient control equation for non-metallic pipeline gas leakage, and obtaining pressure and flow rate data of each measuring point in different periods of time through experiments and substituting the data into the control equation to analyze experimental data; and defining a nonlinear programming problem of an objective function with a least squares criterion, and applying a sequential quadratic programming method to minimize the objective function, so as to determine the size and position of the leakage.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: February 28, 2023
    Inventors: Yongmei Hao, Juncheng Jiang, Zhixiang Xing, Yifei Ma, Ke Yang, Lei Ni, Jie Wu, Yilong Zhu
  • Publication number: 20220163421
    Abstract: Disclosed is an urban non-metallic pipeline leakage location method, the method comprise the following steps: determining whether leakage occurs in a pipeline through numerical simulation law analysis or a Markov chain-based flow analysis method; for a leaking pipeline, establishing an inverse-transient control equation for non-metallic pipeline gas leakage, and obtaining pressure and flow rate data of each measuring point in different periods of time through experiments and substituting the data into the control equation to analyze experimental data; and defining a nonlinear programming problem of an objective function with a least squares criterion, and applying a sequential quadratic programming method to minimize the objective function, so as to determine the size and position of the leakage.
    Type: Application
    Filed: August 11, 2020
    Publication date: May 26, 2022
    Applicant: CHANGZHOU UNIVERSITY
    Inventors: Yongmei HAO, Juncheng JIANG, Zhixiang XING, Yifei MA, Ke YANG, Lei NI, Jie WU, Yilong ZHU