Opening and closing control device for cover
AssigneeAisin Seiki Kabushiki Kaisha
InventorKiyoshi Okamoto
Life of this patent
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Abstract
A opening and closing control device for a cover provided at an opening includes an electric motor for actuating the cover to open and close the opening, at least two rotational number sensors for generating pulse signals which have different phases from one another based on a rotational number of the electric motor, and a position detector for detecting the position of the cover based on one of the pulse signals and for judging a moving direction of the cover in accordance with a signal level of one of the rotational number sensors when the other rotational number sensor detects an edge of the pulse signal.
Claims10
An opening and closing control device for a cover provided at an opening comprising:
- an electric motor which actuates the cover to open and close the opening;
- at least two rotational number sensors for generating pulse signals having different phases from one another based on a rotational number of the electric motor;
- and
- position detecting means for detecting a position of the cover based on one of the pulse signals and for judging a moving direction of the cover in accordance with a signal level of one of the rotational number sensors when the other rotational number sensor detects an edge of the pulse signal.
An opening and closing control device for a cover provided at an opening comprising:
- an electric motor which actuates the cover to open and close the opening, the electric motor having a shaft on which is provided a magnet;
- at least two rotational number sensors which generate pulse signals having offset phases based on rotation of the shaft and the magnet;
- and
- means for determining a position of the cover based on one of the pulse signals and for judging a direction of rotation of the shaft based on a determination of a signal level of the pulse signal from one of the rotational number sensors when an edge of the pulse signal from the other rotational number sensor is detected.
Dependencies are inferred from the claim text.