Patents by Inventor Tommy Woo

Tommy Woo 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).

  • Pre-emptive fault detection through advanced signal analysis
    Patent number: 10303163
    Abstract: Herein provided are methods and systems for detecting failure of a sensor in a control system for a gas turbine engine. A signal is received from the sensor. A high-pass filter is applied to the signal to produce a high-frequency component signal. A rate of occurrence of signal spikes in the high-frequency component signal is determined. The high-frequency component signal is compared to a component signal threshold which is based on at least one known healthy component signal and at least one faulty component signal. The presence of intermittent open circuits caused by the sensor is detected based on the comparing and on the rate of occurrence of signal spikes.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: May 28, 2019
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Hai Tao Wu, Michael Conciatori, Tommy Woo, Michael Woinowsky-Krieger
  • PRE-EMPTIVE FAULT DETECTION THROUGH ADVANCED SIGNAL ANALYSIS
    Publication number: 20180292816
    Abstract: Herein provided are methods and systems for detecting failure of a sensor in a control system for a gas turbine engine. A signal is received from the sensor. A high-pass filter is applied to the signal to produce a high-frequency component signal. A rate of occurrence of signal spikes in the high-frequency component signal is determined. The high-frequency component signal is compared to a component signal threshold which is based on at least one known healthy component signal and at least one faulty component signal. The presence of intermittent open circuits caused by the sensor is detected based on the comparing and on the rate of occurrence of signal spikes.
    Type: Application
    Filed: May 17, 2018
    Publication date: October 11, 2018
    Inventors: Hai Tao WU, Michael CONCIATORI, Tommy WOO, Michael WOINOWSKY-KRIEGER
  • Pre-emptive fault detection through advanced signal analysis
    Patent number: 9996078
    Abstract: Herein provided are methods and systems for detecting failure of a sensor in a control system for a gas turbine engine. A filtered signal is received from the sensor. A high-pass filter is applied to the filtered signal to produce a high-frequency component signal. A rate of occurrence of signal spikes in the high-frequency component signal is determined. The high-frequency component signal is compared to a component signal threshold based on at least one known healthy component signal and at least one faulty component signal, wherein the faulty component signal is based on a known faulty signal caused by intermittent open circuits. The presence of intermittent open circuits caused by the sensor is detected based on the comparing and on the rate of occurrence of signal spikes.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: June 12, 2018
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Hai Tao Wu, Michael Conciatori, Tommy Woo, Michael Woinowsky-Krieger