Patents Represented by Attorney Seymour Levine, Esq.

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  • Adaptive dead-zone compensation for steering systems
    Patent number: 7546190
    Abstract: A method for compensating a steering system exhibiting dead-zone characteristics estimates the dead-zone parameters of the steering system and establishes a dead-zone inverse function utilizing the estimated parameters. The dead-zone inverse is utilized to transform steering orders in the dead-zone. Parameters of the dead-zone inverse are continuously up-dated with the utilization of the transformed steering order, the existing dead-zone parameters, and the present heading.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: June 9, 2009
    Assignee: Northrop Grumman Systems Corp.
    Inventor: Jason O. Burkholder
  • Voltage feedback linearizer
    Patent number: 5694132
    Abstract: Apparatus for linearizing the sweep frequency output of an FMCW radar employing a voltage controlled oscillator includes means for comparing a series of reference voltages sequentially with the instantaeous oscillator drive voltge, accumulating the individual resultant error voltages throughout successive sweep cycles, sequentially converting the individual accumulated voltages to exponential form and feeding the exponential voltages back into the drive circuit for the VCO.
    Type: Grant
    Filed: November 12, 1985
    Date of Patent: December 2, 1997
    Assignee: Alliant Defense Electronics Systems, Inc.
    Inventor: Richard W. Johnson