Electricity: motor control systems – Closed loop speed control system for dc motor with commutator – Field control – or field and armature control – by digital or...
Reexamination Certificate
2006-06-13
2006-06-13
Leykin, Rita (Department: 2837)
Electricity: motor control systems
Closed loop speed control system for dc motor with commutator
Field control, or field and armature control, by digital or...
C388S800000, C388S803000, C388S806000, C388S809000, C388S821000, C388S823000, C318S600000, C318S601000, C318S604000, C341S051000, C341S004000, C341S138000
Reexamination Certificate
active
07062159
ABSTRACT:
A device for correcting a digital estimate of an electric signal is described. The device includes a comparator that generates a current proportional to the difference between an analog estimate signal, which derives from the digital estimate, and the electric signal. The device also includes a capacitor positioned to be charged by the current, a transistor that discharges the capacitor, and a comparator that compares the voltage at the terminal of the capacitor with a reference voltage. The device also includes a controller that drives the transistor in response to the output signal of the comparator and a logic device that generates a correction digital signal to be added to or subtracted from the digital estimate of the electric signal in correspondence of an ascending or descending waveform of the electric signal.
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Bellomo Ignazio
Borrello Antonio
Novelli Aldo
Saggini Stefano
Iannucci Robert
Jorgenson Lisa K.
Leykin Rita
Seed IP Law Group PLLC
STMicroelectronics S.r.l.
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