Actuating-element positioning servo-drive device
AssigneeMercedes-Benz AG
InventorsMartin Ganser, Volker Petri, Reinhold Mickeler
Life of this patent
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Abstract
A servo-drive device is provided for an actuating of, for example, ventilation dampers in motor-vehicle air-conditioning installations element which can be stably positioned in a plurality of positions, d.c. motors with a gear mechanism are used for servo-drive devices of this type. A mechanical system which is moved at the same time and has potential energy varying along its path of movement is coupled to the servo drive such that it influences the current of the servo motor to permit the respective position of the actuating element to be identified by a control device on the basis of the evaluation of the motor current characteristically which depends on the force exerted by the mechanical system on the actuating element.
Claims4
Servo-drive device for positioning of an actuating element, comprising a servo motor configured to drive the actuating element, a control device configured to control the servo motor and to identify actuating-element on the basis of measured motor current, and a mechanical system configured to be moved at the same time as adjusting movement of the actuating element, having potential energy varying along a path of movement thereof, wherein the mechanical system is operatively related to the actuating element to exert a force on the latter and thereby determine motor current characteristic in an actuating-element setting range.
Dependencies are inferred from the claim text.