Air-mix door control device for automobile air-conditioning syst

Details Air-mix door control device for automobile air-conditioning syst Air-mix door control device for automobile air-conditioning syst

1998-04-14

2000-01-25

Bennett, Henry

Automatic temperature and humidity regulation

Mixing fluid of dissimilar temperature

Plenum type

165202, 165298, 62131, G05D 2300

Patent

active

060169648

ABSTRACT:
An air-mix door control device for an automobile air-conditioning system home-position-sets the air-mix door for the full-hot position or the full-cool position when it is necessary to control an air-mix door for a new target opening position other than a full-hot position or a full-cool position under a condition that an opening position detecting unit for detecting an opening position of the air-mix door causes a trouble. Also, the air-mix door control device calculates a reverse drive time required for reversely driving the air-mix door from the home-position-set position to the new target opening position so as to correct a time error derived from a torque variation of an air-mix door motor actuator due to a battery voltage. Thus, the air-mix door control device reversely drives the air-mix door according to the reverse drive time and controls the air-mix door for the new target opening position. Thereby, even when the opening position detecting unit causes a trouble, the air-mix door is controlled for the new target opening position and a comfortable air-conditioning feeling can be secured.

REFERENCES:
patent: 4840308 (1989-06-01), Akabane et al.
patent: 4852361 (1989-08-01), Oike
patent: 4899930 (1990-02-01), Kagohata et al.
patent: 4930567 (1990-06-01), Akabane et al.
patent: 4974776 (1990-12-01), Oshizawa
patent: 5908154 (1999-06-01), Sunaga et al.

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