Patent ID: 8581458

Claim:
Electrical actuating drive for devices to be adjusted mechanically, having an electrical drive motor and an output-drive shaft which can be adjusted over a rotation actuating range of more than 360°, comprising an integrated sensor angle measurement system for contactlessly determining and feeding back the respective rotation position of the output-drive shaft and a compact housing which is split transversally approximately centrally into two cap-like housing parts, wherein the sensor angle measurement system is in the form of an encoder system having an encoder transmission which is driven by said output-drive shaft, wherein said output-drive shaft is coupled to at least two rotating transmitter wheels, whose rotation positions are each detected contactlessly, individually and uniquely as absolute values by a respective sensor, wherein the transmitter wheels are coupled with a specific step-up ratio or step-down ratio such that the rotation position of the output-drive shaft can be determined on the basis of the detected combination of the rotation positions of the transmitter wheels, wherefore an associated electronic evaluation device processes the detected rotation positions in such a way that the angle measurement system produces an output signal which simulates particular characteristics of a multiple potentiometer system, that is simulation of a ratiometric output and simulation of a loaded potentiometer characteristic, wherein only one of the transmitter wheels is directly coupled to the output-drive shaft, wherein the transmitter wheels are directly or indirectly coupled to one another via an intermediate drive, wherein a base part is arranged within the housing in the connection area of the housing parts, and wherein the working transmission is arranged within the first housing part, while the angle measurement system and the drive motor are accommodated within the second housing part.