Title:
SENSOR-LESS POSITION CONTROL ALGORITHM FOR AC MACHINE
Document Type and Number:
Japanese Patent JP3802894
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a sensor-less position control system for an electric motor.
SOLUTION: The control system 10 for the electric motor 12 includes an inverter 34 for supplying power to the electric motor 12, a controller for controlling the inverter 34, a first motor speed control block in the controller for injecting high frequency signals to the electric motor 12 in order to decide the speed and the position of the electric motor 12, a second motor speed control block in the controller for detecting a counter electromotive force in order to decide the speed and the position of the electric motor 12, and a transition control block 46 in the controller for changing operations between the first motor speed control block and the second motor speed control block.
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Inventors:
Nitin Kumar Earl Patel
Stephen E. Schultz
James M Nagashima
Sung Ki Sul
Yo Chan Sung
Bon-Ho Bae
Stephen E. Schultz
James M Nagashima
Sung Ki Sul
Yo Chan Sung
Bon-Ho Bae
Application Number:
JP2003315367A
Publication Date:
July 26, 2006
Filing Date:
September 08, 2003
Export Citation:
Assignee:
GENERAL MOTORS CORPORATION
International Classes:
H02P21/00; H02P1/46; H02P6/18; H02P27/04; (IPC1-7): H02P21/00
Domestic Patent References:
| JP2002058294A | ||||
| JP2001339999A | ||||
| JP2001286198A | ||||
| JP2001086788A |
Attorney, Agent or Firm:
Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Hideo Tanaka
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Hideo Tanaka
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