Control device for opening/closing member
First Claim
1. A control device for opening/closing member comprising:
- a speed detecting unit for detecting a rotation speed of a motor for opening/closing the opening/closing member;
a variation calculating unit for calculating variation in the rotation speed based on a present value and a past value of the rotation speed detected by the speed detecting unit;
a judgment unit for comparing the variation calculated by the variation calculating unit and a predetermined threshold value and judging whether or not a foreign object is entrapped in the opening/closing member based on the comparison result;
a control unit for controlling the motor to open or stop the opening/closing member when judged that the foreign object is entrapped by the judgment unit; and
a state detecting unit for detecting a state of the opening/closing member or state of surrounding of the opening/closing member;
whereinthe variation calculating unit selects an earlier past value or a past value close to the present as the past value of the rotation speed according to the state detected by the state detecting unit, and calculates the variation in the rotation speed using the past value and the present value.
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0 Petitions
Accused Products
Abstract
A control device for opening/closing member capable of accurately detecting entrapment even if a movement speed of the opening/closing member fluctuates due to various factors is easily realized. In the control device for opening/closing member of calculating a variation in a rotation speed based on a present value and a past value of a motor rotation speed, judging entrapment of foreign object based on the comparison result of the relevant variation and a predetermined threshold value, and controlling so as to open the window when judged that the foreign object is entrapped, where an earlier past value is selected for the past value of the rotation speed when detecting that the window glass has moved in a closing direction by a predetermined distance L, and the variation in the rotation speed is calculated using such past value and the present value.
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Citations
9 Claims
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1. A control device for opening/closing member comprising:
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a speed detecting unit for detecting a rotation speed of a motor for opening/closing the opening/closing member; a variation calculating unit for calculating variation in the rotation speed based on a present value and a past value of the rotation speed detected by the speed detecting unit; a judgment unit for comparing the variation calculated by the variation calculating unit and a predetermined threshold value and judging whether or not a foreign object is entrapped in the opening/closing member based on the comparison result; a control unit for controlling the motor to open or stop the opening/closing member when judged that the foreign object is entrapped by the judgment unit; and a state detecting unit for detecting a state of the opening/closing member or state of surrounding of the opening/closing member;
whereinthe variation calculating unit selects an earlier past value or a past value close to the present as the past value of the rotation speed according to the state detected by the state detecting unit, and calculates the variation in the rotation speed using the past value and the present value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification