Patents by Inventor Brian T. Chiem

Brian T. Chiem 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).

  • Methods and systems for providing control stability in a vacuum generation system using an override proportional-integral-derivative (PID) controller
    Patent number: 11934209
    Abstract: Certain embodiments provide a vacuum generation system with an override PID controller, a proportional valve, and a vacuum generator. The override PID controller allows the vacuum generation system to control the operating range of supply air pressure that is provided to the vacuum generator. By controlling the operating range of the supply air pressure, the vacuum generation system is able to avoid entering the decreasing or non-monotonic region of the vacuum generator.
    Type: Grant
    Filed: July 15, 2021
    Date of Patent: March 19, 2024
    Assignee: Alcon Inc.
    Inventor: Brian T. Chiem
  • METHODS AND SYSTEMS FOR PROVIDING CONTROL STABILITY IN A VACUUM GENERATION SYSTEM USING AN OVERRIDE PROPORTIONAL-INTEGRAL-DERIVATIVE (PID) CONTROLLER
    Publication number: 20220083084
    Abstract: Certain embodiments provide a vacuum generation system with an override PID controller, a proportional valve, and a vacuum generator. The override PID controller allows the vacuum generation system to control the operating range of supply air pressure that is provided to the vacuum generator. By controlling the operating range of the supply air pressure, the vacuum generation system is able to avoid entering the decreasing or non-monotonic region of the vacuum generator.
    Type: Application
    Filed: July 15, 2021
    Publication date: March 17, 2022
    Inventor: Brian T. Chiem
  • METHODS AND SYSTEMS FOR PROVIDING CONTROL STABILITY IN A VACUUM GENERATION SYSTEM USING CASCADE PROPORTIONAL-INTEGRAL-DERIVATIVE (PID) CONTROLLER
    Publication number: 20220080098
    Abstract: Certain embodiments provide a vacuum generation system with a cascade PID controller, a proportional valve, and a vacuum generator. The cascade PID controller allows the vacuum generation system to control the operating range of supply air pressure that is provided to the vacuum generator. By controlling the operating range of the supply air pressure, the vacuum generation system is able to avoid entering the decreasing or non-monotonic region of the vacuum generator.
    Type: Application
    Filed: August 30, 2021
    Publication date: March 17, 2022
    Inventor: Brian T. Chiem