Patents by Inventor David S. Zendzian

David S. Zendzian 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).

  • Patent number: 9429944
    Abstract: Certain embodiments of the present invention provide robotic control modules for use in a robotic control system of a vehicle, including structures, systems and methods, that can provide (i) a robotic control module that has multiple functional circuits, such as a processor and accompanying circuits, an actuator controller, an actuator amplifier, a packet network switch, and a power supply integrated into a mountable and/or stackable package/housing; (ii) a robotic control module with the noted complement of circuits that is configured to reduce heat, reduce space, shield sensitive components from electro-magnetic noise; (iii) a robotic control system utilizing robotic control modules that include the sufficiently interchangeable functionality allowing for interchangeability of modules; and (iv) a robotic control system that distributes the functionality and processing among a plurality of robotic control modules in a vehicle.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: August 30, 2016
    Assignees: Deere & Company, iRobot Corporation
    Inventors: Mikhail O. Filippov, Osa Fitch, Scott P. Keller, John O'Connor, David S. Zendzian, Nadim El Fata, Kevin Larsen, Arlen Eugene Meuchel, Mark David Schmaltz, James Allard, Chris A. De Roo, William Robert Norris, Andrew Julian Norby, Christopher David Glenn Turner
  • Patent number: 9043016
    Abstract: Certain embodiments of the present invention provide robotic control modules for use in a robotic control system of a vehicle, including structures, systems and methods, that can provide (i) a robotic control module that has multiple functional circuits, such as a processor and accompanying circuits, an actuator controller, an actuator amplifier, a packet network switch, and a power supply integrated into a mountable and/or stackable package/housing; (ii) a robotic control module with the noted complement of circuits that is configured to reduce heat, reduce space, shield sensitive components from electro-magnetic noise; (iii) a robotic control system utilizing robotic control modules that include the sufficiently interchangeable functionality allowing for interchangeability of modules; and (iv) a robotic control system that distributes the functionality and processing among a plurality of robotic control modules in a vehicle.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: May 26, 2015
    Assignees: Deere & Company, iRobot Corporation
    Inventors: Mikhail O. Filippov, Osa Fitch, Scott P. Keller, John O'Connor, David S. Zendzian, Nadim El Fata, Kevin Larsen, Arlen Eugene Meuchel, Mark David Schmaltz, James Allard, Chris A. De Roo, William Robert Norris, Andrew Julian Norby, Christopher David Glenn Turner
  • Publication number: 20140350768
    Abstract: Certain embodiments of the present invention provide robotic control modules for use in a robotic control system of a vehicle, including structures, systems and methods, that can provide (i) a robotic control module that has multiple functional circuits, such as a processor and accompanying circuits, an actuator controller, an actuator amplifier, a packet network switch, and a power supply integrated into a mountable and/or stackable package/housing; (ii) a robotic control module with the noted complement of circuits that is configured to reduce heat, reduce space, shield sensitive components from electro-magnetic noise; (iii) a robotic control system utilizing robotic control modules that include the sufficiently interchangeable functionality allowing for interchangeability of modules; and (iv) a robotic control system that distributes the functionality and processing among a plurality of robotic control modules in a vehicle.
    Type: Application
    Filed: August 7, 2014
    Publication date: November 27, 2014
    Inventors: MIKHAIL O. FILIPPOV, OSA FITCH, SCOTT P. KELLER, JOHN O'CONNOR, DAVID S. ZENDZIAN, NADIM EL FATA, KEVIN LARSEN, ARLEN EUGENE MEUCHEL, MARK DAVID SCHMALTZ, JAMES ALLARD, CHRIS A. DE ROO, WILLIAM ROBERT NORRIS, ANDREW JULIAN NORBY, CHRISTOPHER DAVID GLENN TURNER
  • Patent number: 5929577
    Abstract: A brushless DC motor controller including a track and hold circuit responsive to the voltage at the motor centertap terminal and the voltage across at least one motor winding in order to determine the position of the rotor by detecting zero crossings of the back EMF of the unenergized winding in a manner having reduced susceptibility to noise. In one embodiment, the output of the track and hold circuit is interpolated to reduce the effects of pulse width modulation noise on rotor position detection. The drive signals controlling a plurality of electronically controlled switches which effect energization of the windings are chopped in order to control the speed of the motor. In one embodiment, the switch connected to a positive voltage is chopped when the sensed back EMF is positive and the switch connected to the negative voltage is chopped when the sensed back EMF is negative.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: July 27, 1999
    Assignee: Unitrode Corporation
    Inventors: Robert A. Neidorff, David S. Zendzian, John A. O'Connor