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Title:
自動制御装置
Document Type and Number:
Japanese Patent JP4472889
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain an automatic control device capable of controlling an object to be controlled in a manner according to an actual condition by deciding the saturated state of a quantity-of-state detecting means. SOLUTION: A device such as a fan 5 having a function capable of adjusting the quantity of state such as the concentration of gas or humidity of a specific space is the object to be controlled. In the automatic control device which performs a feedback control so that the output value of the quantity-of-state detecting means such as a miscellaneous gas sensor 1 for detecting the quantity of state of the space and outputting it reaches a set target value, a saturation deciding process whether or not the output value of the quantity of state detecting means shows a saturated state that the output value is hardly changed is carried out with the lapse of a prescribed time after the object to be controlled is operated. When the saturation is decided, the operation to the object to be controlled is stopped. When the saturation is not decided, the feedback control based on the output value of the quantity-of-state detecting means is continued.

Inventors:
Takuya Saeki
Application Number:
JP2001108612A
Publication Date:
June 02, 2010
Filing Date:
April 06, 2001
Export Citation:
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Assignee:
Mitsubishi Electric Corporation
International Classes:
F24F11/02; F24F6/00; F24F7/00; G05D21/02; G05D22/02
Domestic Patent References:
JP9108526A
JP63101643A
JP10122615A
JP1176727A
JP20005287A
JP217915A
Attorney, Agent or Firm:
Hiroaki Sakai