Method for short drop adjustment in a frameless glass vehicle window system
AssigneeRobert Bosch GmbH
InventorsHolger Pruessel, Scott Averitt, Kumar Saurabh
Life of this patent
Estimating the term…
Abstract
A method for controlling movement of a window glass (12) in a vehicle using an electric motor (26) associated with a drive mechanism (1,2,3,4) through a cable (50), said method comprising the steps: determining an actual position (X2) of the window glass (12) based on the movement of the motor (26), determining a cable stiffness (S2), determining a position lag (400) of the window glass (12) based on the determined actual position (X2) of the window glass (12), a predetermined position (Z2) of the window glass (12) and the cable stiffness (S2); and continuously correcting the position of the window glass (12) based on the determined position lag (400).
Claims6
A method for controlling movement of a window glass in a vehicle using an electric motor associated with a drive mechanism through a cable, said method comprising the steps:
- determining a first position of the window glass based on movement of the motor;
- determining a stiffness of the cable, wherein said stiffness is determined based on an ambient temperature;
- determining a position lag of the window glass based on the determined first position of the window glass, a second position of the window glass representing a desired position of the window glass, and the stiffness of the cable, wherein the position lag represents a distance between the window glass and the second position of the window glass;
- and
- operating the electric motor to correct for the position lag of the window glass based on the determined position lag.
An electronic control unit (ECU) for controlling movement of a window glass in a vehicle door system having a door, said system comprising an electric motor associated with a drive mechanism through a cable, said ECU is configured to:
- detect opening or closing of the door;
- determine movement of the motor upon opening or closing of the door;
- determine a first position of the window glass in relation to the said motor movement;
- determine a stiffness of the cable, wherein said stiffness is determined based on an ambient temperature;
- determine a position lag of the window glass based on the determined first position, a second position of the window glass representing a desired position of the window glass, and the stiffness of the cable, wherein the position lag represents a distance between the window glass and the second position of the window glass;
- and
- operate the electric motor to correct for the position lag of the window glass based on the determined position lag.
Dependencies are inferred from the claim text.