Method for the control of the opening and closing process of electrically-driven device
First Claim
1. A method for controlling the opening and closing processes of a device, the device being driven by an electric motor operable in two rotational directions the motor being capable of influence directly by means of electric operating elements or indirectly by means of a sensor apparatus which determines a plurality of parameters associated with the device including displacement direction, displacement position and displacement speed, via control electronics containing a microprocessor with a counting facility, the method comprising:
- generating a sensor signal (S) having positive edges corresponding to rotational motion of the motor;
measuring a time period (Tp) of the sensor signal (S);
calculating a switch-off period (Ta) using the time period (Tp) of the sensor signal (S);
establishing a reverse point (tr) indicative of a change in rotational direction of the electric motor (1) using the switch-off period (Ta) as a threshold value therefor;
calculating a time period (Tu) starting from reverse point (tr);
calculating a time period (Tu1) starting from reverse point (tr);
measuring a time period (Tp+1) of the sensor signal (S);
comparing the switch-off period (Ta) in synchronization with the time period (Tp+1) of the sensor signal (S);
reversing the rotational direction of the motor when the time period (Tp+1) of the sensor signal (S) exceeds the switch-off period (Ta);
adjusting the counting facility in a first direction in response to a positive edge appearing in the sensor signal (S) before the passing of the time period (Tu); and
adjusting the counting facility in a second direction in response to a positive edge appearing in sensor signal (S) after the passing of the time period (Tu1).
1 Assignment
0 Petitions
Accused Products
Abstract
A method for the electronic monitoring and control of the opening and closing processes of an electrically driven device with an anti-jam facility for use in motor vehicles. The device includes an electric motor connected to a vehicle electrical system and an electric motor being operable in two directions assigned to the device. The device is capable of influence directly by means of electric operating elements or indirectly by means of a sensor apparatus which determines the parameters associated with the device.
12 Citations
6 Claims
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1. A method for controlling the opening and closing processes of a device, the device being driven by an electric motor operable in two rotational directions the motor being capable of influence directly by means of electric operating elements or indirectly by means of a sensor apparatus which determines a plurality of parameters associated with the device including displacement direction, displacement position and displacement speed, via control electronics containing a microprocessor with a counting facility, the method comprising:
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generating a sensor signal (S) having positive edges corresponding to rotational motion of the motor; measuring a time period (Tp) of the sensor signal (S); calculating a switch-off period (Ta) using the time period (Tp) of the sensor signal (S); establishing a reverse point (tr) indicative of a change in rotational direction of the electric motor (1) using the switch-off period (Ta) as a threshold value therefor; calculating a time period (Tu) starting from reverse point (tr); calculating a time period (Tu1) starting from reverse point (tr); measuring a time period (Tp+1) of the sensor signal (S); comparing the switch-off period (Ta) in synchronization with the time period (Tp+1) of the sensor signal (S); reversing the rotational direction of the motor when the time period (Tp+1) of the sensor signal (S) exceeds the switch-off period (Ta); adjusting the counting facility in a first direction in response to a positive edge appearing in the sensor signal (S) before the passing of the time period (Tu); and adjusting the counting facility in a second direction in response to a positive edge appearing in sensor signal (S) after the passing of the time period (Tu1). - View Dependent Claims (2, 3, 4, 5, 6)
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Specification