Patents by Inventor Osamah El-Rifai

Osamah El-Rifai 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).

  • Method and apparatus for hybrid resetting states proportional-integral-derivative and lag controllers
    Patent number: 8200347
    Abstract: A controller includes a feedforward module to produce a feedforward component azr, where a is a high frequency gain, a proportional module is to produce a proportional component Kpvz, where Kpv is a proportional gain, and an integral or lag module with state resetting to produce an integral or lag component. The feedforward component azr, the proportional component Kpvz, and the integral component Kivzc are combined as an input u for the system to be controlled.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: June 12, 2012
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Khalid El-Rifai, Osamah El-Rifai
  • Method and apparatus for stabilizing galvanometer scanner
    Patent number: 8081362
    Abstract: A galvanometer scanner includes a mechanical support unit engaged with a far end of an optical element. A near end of the optical element is connected to an output shaft of an electric rotary motor. The mechanical support unit maintains an alignment of an axis of rotation of the optical element and an axis of rotation of the electric rotary motor.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: December 20, 2011
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventor: Osamah El-Rifai
  • Method and Apparatus for Stabilizing Galvanometer Scanner
    Publication number: 20110038022
    Abstract: A galvanometer scanner includes a mechanical support unit engaged with a far end of an optical element. A near end of the optical element is connected to an output shaft of an electric rotary motor. The mechanical support unit maintains an alignment of an axis of rotation of the optical element and an axis of rotation of the electric rotary motor.
    Type: Application
    Filed: August 12, 2009
    Publication date: February 17, 2011
    Inventor: Osamah El-Rifai
  • Method and Apparatus for Hybrid Resetting States Proportional-Integral-Derivative and Lag Controllers
    Publication number: 20100185304
    Abstract: A controller includes a feedforward module to produce a feedforward component azr, where a is a high frequency gain, a proportional module is to produce a proportional component Kpvz, where Kpv is a proportional gain, and an integral or lag module with state resetting to produce an integral or lag component. The feedforward component azr, the proportional component Kpvz, and the integral component Kivzc are combined as an input u for the system to be controlled.
    Type: Application
    Filed: January 22, 2009
    Publication date: July 22, 2010
    Inventors: Khalid El-Rifai, Osamah El-Rifai
  • Height calibration of scanning probe microscope actuators
    Publication number: 20050109925
    Abstract: A mechanism for calibrating a scanning probe microscope is presented. The calibration mechanism operates to apply an input signal to an actuator to cause acceleration of the actuator and to measure a value indicative of deflection of a cantilever attached to the actuator, as a result of the actuator acceleration. The measured deflection value is used to determine a corresponding value of actuator displacement.
    Type: Application
    Filed: November 26, 2003
    Publication date: May 26, 2005
    Inventors: Osamah El Rifai, Kamal Youcef-Toumi