Patents by Inventor Chunyan Ao

Chunyan Ao 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: 12007309
    Abstract: The present invention discloses a non-contact dynamic strain field measuring method and system for a rotating blade. The method includes the following steps: establishing a three-dimensional finite element model of a to-be-measured rotating blade, and extracting modal parameters of the three-dimensional finite element model; determining the number and axial mounting positions of blade tip timing sensors; constructing a conversion matrix of finite measuring point displacement and an overall strain field; and acquiring blade tip finite position displacement of the rotating blade based on the blade tip timing sensors, and acquiring, by a dynamic strain, dynamic strains of the rotating blade at any moment, on any position and in any direction based on modal processing of the conversion matrix.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: June 11, 2024
    Assignee: XI'AN JIAOTONG UNIVERSITY
    Inventors: Baijie Qiao, Chunyan Ao, Xuefeng Chen, Hongrui Cao, Yu Sun
  • Patent number: 11860066
    Abstract: The present invention discloses a dynamic strain field measuring method and system for a rotor blade based on blade tip timing. The method includes the following steps: establishing a three-dimensional finite element model of a to-be-measured rotor blade, and extracting modal parameters of the three-dimensional finite element model; determining the number and circumferential mounting positions of blade tip timing sensors; establishing a mapping relationship between single-point displacement and full-field dynamic strains of the blade; acquiring blade tip single-point displacement of the rotor blade based on the blade tip timing sensors; and realizing, by the single-point displacement, dynamic strain measurement in any position and direction of the rotor blade based on the mapping relationship.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: January 2, 2024
    Assignee: XI'AN JIAOTONG UNIVERSITY
    Inventors: Baijie Qiao, Xuefeng Chen, Chunyan Ao, Weifeng He, Laihao Yang
  • Publication number: 20210389207
    Abstract: The present invention discloses a non-contact dynamic strain field measuring method and system for a rotating blade. The method includes the following steps: establishing a three-dimensional finite element model of a to-be-measured rotating blade, and extracting modal parameters of the three-dimensional finite element model; determining the number and axial mounting positions of blade tip timing sensors; constructing a conversion matrix of finite measuring point displacement and an overall strain field; and acquiring blade tip finite position displacement of the rotating blade based on the blade tip timing sensors, and acquiring, by a dynamic strain, dynamic strains of the rotating blade at any moment, on any position and in any direction based on modal processing of the conversion matrix.
    Type: Application
    Filed: May 20, 2021
    Publication date: December 16, 2021
    Inventors: Baijie QIAO, Chunyan AO, Xuefeng CHEN, Hongrui CAO, Yu SUN
  • Publication number: 20210278312
    Abstract: The present invention discloses a dynamic strain field measuring method and system for a rotor blade based on blade tip timing. The method includes the following steps: establishing a three-dimensional finite element model of a to-be-measured rotor blade, and extracting modal parameters of the three-dimensional finite element model; determining the number and circumferential mounting positions of blade tip timing sensors; establishing a mapping relationship between single-point displacement and full-field dynamic strains of the blade; acquiring blade tip single-point displacement of the rotor blade based on the blade tip timing sensors; and realizing, by the single-point displacement, dynamic strain measurement in any position and direction of the rotor blade based on the mapping relationship.
    Type: Application
    Filed: May 20, 2021
    Publication date: September 9, 2021
    Inventors: Baijie Qiao, Xuefeng Chen, Chunyan Ao, Weifeng He, Laihao Yang