Fast rotor position detection apparatus and method for disk drive motor at standstill
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 18, 2003
Grant Date -
N/A
app pub date -
Jul 27, 2000
filing date -
Jul 27, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention includes a method and apparatus for detecting the position of a stationary rotor in a polyphase electric motor. The method includes providing one or more short duration voltage pulses to the motor and determining the rotor position based on measurements of one or more phase voltages. The invention allows identification of a region in which the rotor is positioned, through polarity sensing, whereby the rotor position may be quickly and accurately determined, to allow a stationary electric motor to be properly energized to rotate in a desired direction.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully