Title:
ELECTRIC ACTUATOR SYSTEM
Document Type and Number:
Japanese Patent JP3885777
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To positively detect a pulse signal of an initializing pattern regardless of a stopping position of a DC motor 110.
SOLUTION: This system includes a pulse generator 158 for generating a pulse signal in response to the rotation of the DC motor 110. A CPU240A detects a pulse signal generated from the pulse generator 158 through a pulse signal detection circuit 220, detects a rotational angle of rotating shaft 127 based on the detected pulse signal, and controls the rotational angle of the rotating shaft based on the detected rotational angle. The pulse generator 158 is structured so as to generate the pulse signal of the initializing pattern indicating an origin position of the rotational angle. When the DC motor 110 is rotated in one direction, the CPU240A rotates the DC motor 110 in another direction if a determination means determines that the pulse signal of the initializing pattern is incapable of detecting the pulse signal of the the initializing pattern, rotates the DC motor 110 in the other direction.
Inventors:
Tokuhisa Takeuchi
Hiroshi Nakajima
Hiroshi Nakajima
Application Number:
JP2003276071A
Publication Date:
February 28, 2007
Filing Date:
July 17, 2003
Export Citation:
Assignee:
株式会社デンソー
International Classes:
H02P3/06; G05B19/23; H02P3/00; H02P7/06; (IPC1-7): H02P3/06; H02P7/06
Domestic Patent References:
| JP2002354885A | ||||
| JP11166352A | ||||
| JP580389A |
Attorney, Agent or Firm:
Yoji Ito
Takahiro Miura
Fumihiro Mizuno
Takahiro Miura
Fumihiro Mizuno