| 摘要 |
PROBLEM TO BE SOLVED: To eliminate troublesome mounting adjustment work to an electric motor side without using a limit switch, and to reduce cost, while making a throttle valve rotary motor quickly stop. SOLUTION: This throttle control device is equipped with: changeover switches 21, 22 connected in series to a power source along with a motor 4 for switching to/from a mode among modes for normal rotation, reverse rotation, and stopping; a current detecting part 25 connected in series to the motor 4 and the changeover switches 21, 22, for detecting that a current flowing through the motor 4 exceeds a set level L; and a time detecting part 26 for detecting that a current exceeds the set level L and continues flowing over a set time T. When the current flowing through the motor 4 exceeds the set level L and continues flowing over a set time T, the changeover switches 21, 22 are controlled and the motor 4 is stopped. COPYRIGHT: (C)2005,JPO&NCIPI
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