Patents by Inventor Hongtu MA

Hongtu 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).

  • Publication number: 20210086921
    Abstract: Disclosed is a method for designing a reentry trajectory based on flight path angle planning, including the following steps: S1. extracting an actual operating parameter of an aircraft, setting a maximum dynamic pressure nmax a maximum stagnation point heat flux {dot over (Q)}max, and a maximum overload nmax according to a mission requirement, and solving for a velocity-height boundary of a reentry trajectory; S2. solving for a reentry trajectory in an initial descent stage according to differential equations of reentry motion, and setting up a flight-path-angle lower limit ?min(V) according to the reentry trajectory in the initial descent stage, the velocity-height boundary, and a target point in a velocity-height phase plane; and S3. planning, based on the flight-path-angle lower limit ?min(V), a flight path angle satisfying terminal constraints, and calculating a corresponding bank angle to obtain a reentry trajectory.
    Type: Application
    Filed: December 22, 2017
    Publication date: March 25, 2021
    Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
    Inventors: Wenya ZHOU, Yutao WANG, Hongtu MA, Hongbo CHEN, Zhentao NIE, Yongyuan LI
  • Patent number: 10699100
    Abstract: A method for microscopic image acquisition based on a sequential slice. The method includes; acquiring a sample of the sequential slice and a navigation image thereof; identifying and labeling the sample of the sequential slice in the navigation image by utilizing methods of image processing and machine learning; placing the sample of the sequential slice in a microscope, establishing a coordinate transformation matrix for a navigation image-microscope actual sampling space coordinate, and navigating and locating a random pixel point in the navigation image to a center of the microscope's visual field; locating the sample of the sequential slice under a low resolution visual field, binding a sample acquisition parameter; based on the binding of the sample acquisition parameter, recording a relationship of relative of locations between a center point of a high resolution acquisition region and a center point after being matched with a sample template.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: June 30, 2020
    Assignee: Institute of Automation, Chinese Academy of Sciences
    Inventors: Guoqing Li, Hongtu Ma, Hua Han, Lixin Wei
  • Publication number: 20190012520
    Abstract: A method for microscopic image acquisition based on a sequential slice. The method includes; acquiring a sample of the sequential slice and a navigation image thereof; identifying and labeling the sample of the sequential slice in the navigation image by utilizing methods of image processing and machine learning; placing the sample of the sequential slice in a microscope, establishing a coordinate transformation matrix for a navigation image-microscope actual sampling space coordinate, and navigating and locating a random pixel point in the navigation image to a center of the microscope's visual field; locating the sample of the sequential slice under a low resolution visual field, binding a sample acquisition parameter; based on the binding of the sample acquisition parameter, recording a relationship of relative of locations between a center point of a high resolution acquisition region and a center point after being matched with a sample template.
    Type: Application
    Filed: November 7, 2016
    Publication date: January 10, 2019
    Applicant: Institute of Automation, Chinese Academy of Sciences
    Inventors: Guoqing LI, Hongtu MA, Hua HAN, Lixin WEI