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Patent Searching and Data


Title:
APPARATUS AND METHOD FOR CONTROLLING VALVE MOTOR
Document Type and Number:
Japanese Patent JP3811558
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To make it possible to close a valve perfectly, and to prevent breakage of a gear, etc., caused by obstruction caused by a foreign matter, by detecting the malfunction of the valve.
SOLUTION: A current quantity detecting element 52 detects the quantity of a current flowing in a motor 41 for driving a valve, and a driving part 51 stops its drive if the quantity of the current flowing in the motor 41 exceeds a specified value. Besides, a measuring part 53 measures a driven time of the motor 41, and a shaft position judging part 54 judges whether or not the output shaft of the motor 41 is in a region on the closing position side of the valve exceeding a specified detecting angle range. And a malfunction detecting part 55 detects the maloperation of the valve, on the basis of the value of the current flowing in the motor 41, the driven time of the motor, and the judgment whether or not the output shaft is in a region on the closing position side of the valve exceeding the detecting angle range.


Inventors:
佐藤 徹哉
渡辺 久恭
斉藤 寿久
井上 剛
岡本 喜久雄
Application Number:
JP31058297A
Publication Date:
August 23, 2006
Filing Date:
November 12, 1997
Export Citation:
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Assignee:
株式会社ガスター
International Classes:
F16K31/04; H02P3/06; H02H7/085; (IPC1-7): H02P3/06; F16K31/04; H02H7/085
Domestic Patent References:
JP5010472A
JP5039885A
JP57130075U
JP5248701A
JP9292047A
Attorney, Agent or Firm:
笹井 浩毅