Abstract: A method for open-loop control of a drive device for assisting a vehicle at least intermittently operable by muscle power is provided. The vehicle includes a driving wheel drivable by drive force provided from the drive device, and a crank apparatus rotatable by a rider of the vehicle. The method includes: (S1) querying a predetermined operating mode of the drive device specifiable by the rider of the vehicle; (S2) detecting a rotational speed of the driving wheel; (S3) detecting a rotational speed of the crank apparatus; (S4) determining a synchronous operation with respect to the rotational speed of the driving wheel and the rotational speed of the crank apparatus based on a transmission ratio between the crank apparatus and the driving wheel; and (S6) controlling the drive device with a predefined drive power regardless of a muscle power introduced into a crank apparatus when the predetermined operating mode is present and the synchronous operation is present.

Abstract: A method for operating a drive device (1) for a muscle-powered vehicle is provided. The drive device (1) includes a pedal shaft (2), a superposition gear unit (6) as a planetary transmission with a first element (7), a second element (8), and a third element (10), an output gear (5) mechanically operatively connectable to a wheel (42) of the muscle-powered vehicle, and an electric machine (12). The pedal shaft (2) is mechanically connected to the second element (8), the output gear (5) is mechanically connected to the third element (10), and the electric machine (12) is mechanically connected to the first element (7). The method includes detecting (I) the actual rotational speed of the output gear (5), determining (II) a target rotational speed of the pedal shaft (2), and controlling (III) the electric machine (12) based on the detected actual rotational speed and the determined target rotational speed.

Abstract: A method of operating an adjustable roll stabilizer (1) of a motor vehicle. The adjustable roll stabilizer (1) includes an actuator (2) which can rotate relative to a rotational axis (3) in order to twist two stabilizer sections (6a, 6b) connected thereto relative to one another about the rotational axis (3). The stabilizer sections (6a, 6b) are radially spaced away from the rotational axis (3) and each is coupled to a wheel suspension (7a, 7b, 8a, 8b, 9a, 9b). The actuator (2) is controlled on the basis of a system target torque specified for the vehicle, and the specified system target torque is tested for acceptability in relation to a roll torque distribution (?) that is acceptable for the motor vehicle.

Abstract: A method of operating an adjustable roll stabilizer (1) of a motor vehicle. The adjustable roll stabilizer (1) includes an actuator (2) which can rotate relative to a rotational axis (3) in order to twist two stabilizer sections (6a, 6b) connected thereto relative to one another about the rotational axis (3). The stabilizer sections (6a, 6b) are radially spaced away from the rotational axis (3) and each is coupled to a wheel suspension (7a, 7b, 8a, 8b, 9a, 9b). The actuator (2) is controlled on the basis of a system target torque specified for the vehicle, and the specified system target torque is tested for acceptability in relation to a roll torque distribution (?) that is acceptable for the motor vehicle.

Abstract: A method for sensorless commutation of a BLDC motor is presented, wherein the following steps are executed.In step 1, the voltage of a currentless phase is sampled in predetermined time intervals. In step 2, the voltage of the zero crossing, and the associated rotational rate, is determined on the basis of the time difference between two sampling points, and the point in time of the zero crossing is supplied to a commutation timer K, when a zero crossing has been detected between two sampling points. In step 3, the time until a predefined angular rotation of the motor is calculated on the basis of the determined rotational rate, and this time is transmitted to the commutation timer. In step 4, the commutation is initiated and the commutation time is reset when the time transmitted to the commutation time has elapsed.