Method for actuating linear motor of window positioning device for positioning window pane of door of e.g. lorry, involves subjecting positioning device with smaller pretension in pretensioning state than in another pretensioning state

摘要

The method involves actuating a drive device (23) in an opening direction around an amount of a drive parameter, and bringing the drive device into a relaxation position. The drive device is actuated in a closing direction around another amount of the drive parameter, and brought into another relaxation position, in which a window positioning device (20) is in a pretensioning state, where the latter amount is smaller than the former amount. The window positioning device is subjected with smaller pretension in the pretensioning state than in another pretensioning state. The drive parameter is an angle unit. An independent claim is also included for a control device.