Method and apparatus for controlling a motor actuator under driv

Details Method and apparatus for controlling a motor actuator under driv Method and apparatus for controlling a motor actuator under driv

1997-06-13

1999-05-25

Joyce, Harold

Ventilation

Vehicle

Having automatic control means

454156, B60H 100

Patent

active

059065419

ABSTRACT:
When a difference in opening angle of an air-mixing door between a target position and an actual position is larger in value than a width of an insensitive band area, a mixing door actuator is driven to a heating side or a cooling side depending on the amount of the difference so as to have the air-mixing door reach its target position in a condition in which the insensitive band area is eliminated. When the difference is smaller than the predetermined band width, i.e., when a drive position of the mixing door actuator is in the insensitive band width, this band width is effected so that the mixing door actuator is stopped in operation to stabilize the operation.

REFERENCES:
patent: 4529920 (1985-07-01), Yoshida et al.
patent: 4974776 (1990-12-01), Oshizawa
patent: 5258694 (1993-11-01), Ohnishi et al.
patent: 5647794 (1997-07-01), Ohkubo et al.
patent: 5705907 (1998-01-01), Miyamori et al.

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