Abstract: A method for operating an actuating element (30) comprises the following method steps: controlling the rotational frequency of an electric motor (1) to a constant value, calculating an estimate (FE) for the actuating force (F) acting on the actuating element, comparing the estimate (FE) with a predetermined limiting value, and detecting a current position of the actuating element (30) for the predetermined limiting value and assigning the detected position to a final position stored in a travel model. An actuating drive under the control of force and operating according to this method is low in noise and energy-efficient and can therefore be used, in particular, even to operate a battery-fed radiator valve driven in a wireless fashion.

Abstract: An actuating drive (60), that can be fed by a battery (6), for an actuator (5) comprises a drive unit (61) for operating the actuator (5), and a control unit (62), capable of communicating with an external station (70) in a wireless fashion, for controlling the drive unit (61). The control unit (62) can be fed via a voltage regulator (64) connected to the battery (6), while the drive unit (61) is directly connected to the output voltage (UB) of the battery (6). The energy consumption of the actuating drive (60) can be optimized in order to achieve a long service life for the battery.

Abstract: An actuating drive (60), that can be fed by a battery (6), for an actuator (5) comprises a drive unit (61) for operating the actuator (5), and a control unit (62), capable of communicating with an external station (70) in a wireless fashion, for controlling the drive unit (61). The control unit (62) can be fed via a voltage regulator (64) connected to the battery (6), while the drive unit (61) is directly connected to the output voltage (UB) of the battery (6). The energy consumption of the actuating drive (60) can be optimized in order to achieve a long service life for the battery.

Abstract: An actuating drive, which can be remotely controlled in a wireless fashion and is fed by a battery, for operating an actuator (5) between two final positions has a control device for controlling the speed of an electric motor (1). The actuating drive (60) has a changeover device (81) with the aid of which it can optionally be operated either in a first operating mode or in a second operating mode. The control device controls the speed to a first setpoint (?SN) in the first operating mode, and to a second setpoint (?SL) in the second operating mode. The first setpoint (?SN) is fixed in such a way that the energy consumption during operation of the actuator (5) is minimal, while the second setpoint (?SL) is fixed in such a way that the noise level (L) generated by the actuating drive in the second operating mode is lower than in the first operating mode.

Abstract: A method for operating an actuating element (30) comprises the following method steps: controlling the rotational frequency of an electric motor (1) to a constant value, calculating an estimate (FE) for the actuating force (F) acting on the actuating element, comparing the estimate (FE) with a predetermined limiting value, and detecting a current position of the actuating element (30) for the predetermined limiting value and assigning the detected position to a final position stored in a travel model. An actuating drive under the control of force and operating according to this method is low in noise and energy-efficient and can therefore be used, in particular, even to operate a battery-fed radiator valve driven in a wireless fashion.