Abstract: A microelectromechanical component. The microelectromechanical component includes a substrate with a substrate surface, a mass that is movable relative to the substrate surface, and a stop spring arranged between the substrate and the movable mass, wherein the stop spring extends from a mechanical anchor in a cantilevered manner parallel to the substrate surface, and wherein the stop spring has a decreasing width along its longitudinal extension from the mechanical anchor to a free end of the stop spring. A microelectromechanical inertial sensor having such a microelectromechanical component, is also described.

Abstract: A method for controlling a drive unit of a vehicle, in particular a single-track vehicle such as an eBike, that includes a drive unit and a sensor unit with at least one sensor element, is disclosed. The method includes (i) sensing a sensor signal by the at least one sensor element, (ii) determining the staircase based on the detected sensor signal, in particular by the sensor unit, and (iii) controlling the drive unit based on the determined staircase.

Abstract: An electrically propelled two-wheeled vehicle and a method for adjusting a drive torque of an electrically propelled two-wheeled vehicle. The electrically propelled two-wheeled vehicle includes: a sensor, based on which a pitch rate of the electrically propelled two-wheeled vehicle is ascertainable; a device for influencing a drive torque of the electrically propelled two-wheeled vehicle; and an evaluation unit configured to compare a pitch rate, which is ascertained on the basis of the sensor and represents a pitch rate of the electrically propelled two-wheeled vehicle relative to the surroundings of the two-wheeled vehicle, to a predefined, static pitch rate threshold value, and configured to reduce a drive torque acting upon a drive train of the electrically propelled two-wheeled vehicle using a predefined amplification factor, if a pitch rate generated by an upward movement of a front wheel of the electrically propelled two-wheeled vehicle exceeds the static pitch rate threshold value.

Abstract: A method for operating a drive of an electric bicycle with a determination of an overheating protection of an electric drive is disclosed. The method includes (i) receiving and/or reading status data, wherein the status data comprises a temperature of the electric drive and a temperature gradient of the electric drive, (ii) receiving an overheating protection map and/or reading the overheating protection map from a memory, wherein the overheating protection map indicates a permissible maximum power of the electric drive as a function of the status data, (iii) determining a permissible maximum power from the overheating protection map by way of the status data, and (iv) outputting a power which is at most the permissible maximum power of the electric drive.

Abstract: A method for operating a vehicle operable by motor power and/or pedal power, in particular, an electric bicycle. The vehicle includes an electric drive, a crank mechanism, at least one torque sensor, which is configured to detect a torque applied by a rider onto the crank mechanism, in the form of a multitude of torque measuring signals, and a control unit, which is configured to generate a control signal for activating the electric drive as a function of at least one of the torque measuring signals. Upon detection of an error regarding the torque sensor, the control signal is generated in the form of a substitute control signal, based on at least one of the torque measuring signals, when this at least one torque measuring signal is recognized as plausible. A vehicle operable by motor power and/or pedal power, in particular, an electric bicycle, is also described.

Abstract: A control system for an electric bicycle includes an operating unit which is configured to control a ride controller of the electric bicycle. The operating unit is configured to allow a user to select among a plurality of assistance modes via an operating interface, and to control the ride controller in such a way that a drive control for a motor of the bicycle is carried out according to the selected assistance mode.

Abstract: A device for controlling a motor of an electric bicycle. The device includes a control electronics system that is set up to control a torque of the motor in a normal operating mode based on an acquired driver torque; to detect during normal operation whether, at the current motor torque, no rotation of the motor is taking place even though a driver torque is being exerted, and to control the motor to continue to provide the motor torque in a blocking operating mode if it has been detected that at the present motor torque no rotation of the motor is taking place even though a driver torque is being exerted.

Abstract: A method for controlling an electric bicycle that can be operated with motor force and/or with pedal force is disclosed. The method includes (i) providing a trigger signal for enabling the activation of a walk mode to a control unit of the electric bicycle, (ii) providing a measurement signal of a sensor device regarding a property of the electric bicycle and/or regarding a component comprised by the electric bicycle to the control unit, (iii) detecting plausibility of the trigger signal on the basis of the provided measurement signal, and (iv) controlling the electric bicycle by enabling the activation of the walk mode in accordance with the detection of the plausibility of the trigger signal. Also disclosed is an electric bicycle that can be operated with motor force and/or with pedal force.

Abstract: A control system for an electric bicycle includes an operating unit which is configured to control a ride controller of the electric bicycle. The operating unit is configured to allow a user to select among a plurality of assistance modes via an operating interface, and to control the ride controller in such a way that a drive control for a motor of the bicycle is carried out according to the selected assistance mode.

Abstract: A control system for an electric bicycle includes a drive controller designed to provide drive control of the electric bicycle. The drive control is implemented on the basis of a set of drive parameters. The drive parameters are configurable for one or more assistance modes by way of a user interface.

Abstract: A method for changing a transmission ratio of an electrically controllable gearing of a bicycle, in particular of an electric bicycle, includes (i) measuring a pedaling frequency of the bicycle rider on the pedal shaft, (ii) measuring a pedaling force of the bicycle rider, and (iii) determining a gear change operating state on the basis of the measured pedaling frequency and on the basis of the measured pedaling force if the measured pedaling frequency is less than or equal to a lower frequency threshold value or is greater than or equal to an upper frequency threshold value, and/or the measured pedaling force is less than or equal to a lower force threshold value or is greater than or equal to an upper force threshold value. After determining the gear change operating state, a control signal is generated for the gearing according to the determined gear change operating state.

Abstract: A micromechanical inertial sensor and a method for its operation. The micromechanical inertial sensor includes: a sensor element; a substrate having a substrate plane; a detection device for detecting a mechanical deflection due to tilting or deformation of the sensor element about a rotation axis substantially parallel to the substrate plane, wherein the mechanical deflection due to the tilting or deformation takes place along a detection direction substantially perpendicular to the substrate plane, wherein the detection device includes a first electrode structure and a second electrode structure that are firmly anchored to the substrate, wherein the detection device generates a measurement signal from the detected mechanical tilting or deformation of the sensor element about the rotation axis.

Abstract: A method for the maintenance of an electric bike includes (i) activating a maintenance mode of a drive unit of the electric bike in response to an activation signal, wherein the electric bike, during the maintenance mode, is in a stationary state relative to surroundings, and (ii) operating the drive unit in the maintenance mode in response to a one-time user input by way of the input unit.

Abstract: A method for controlling an electric drive motor of an electrically drivable bicycle includes determining a cadence of a rider of the bicycle, and operating the electric drive motor under specification of (i) a first predefined target speed for the electric drive motor, which is lower than the cadence of the rider, and (ii) a first predefined torque for the electric drive motor, when the determined cadence of the rider exceeds a predefined cadence threshold value. The method further includes operating the electric drive motor under specification of (i) a second predefined target speed for the electric drive motor, which is higher than the first target speed, and (ii) a second predefined torque for the drive motor, when a rider torque exerted by the rider on a drive train of the bicycle exceeds a first predefined rider torque threshold value.

Abstract: A method for operating a two-wheeler. The two-wheeler includes a drive unit and a sensor system, the sensor system including a rotation rate sensor, an acceleration sensor, and a wheel speed sensor. The wheel speed sensor detects at least one measuring pulse per revolution of a wheel of the two-wheeler. The method includes: detecting three-dimensional rotation rates of the two-wheeler, detecting acceleration values of the two-wheeler, and estimating a motion state of the two-wheeler based on the detected rotation rates, the motion state including estimated values for estimated acceleration values and an estimated speed and an estimated distance covered, first correction of the estimated motion state based on the detected acceleration values, ascertaining an instantaneous steering angle of the two-wheeler based on the corrected estimated motion state, and actuating the drive unit and/or an antilocking system of the two-wheeler as a function of the ascertained instantaneous steering angle.

Abstract: A method for controlling an electric drive motor of an electrically drivable bicycle includes determining a cadence of a rider of the bicycle, and operating the electric drive motor under specification of (i) a first predefined target speed for the electric drive motor, which is lower than the cadence of the rider, and (ii) a first predefined torque for the electric drive motor, when the determined cadence of the rider exceeds a predefined cadence threshold value. The method further includes operating the electric drive motor under specification of (i) a second predefined target speed for the electric drive motor, which is higher than the first target speed, and (ii) a second predefined torque for the drive motor, when a rider torque exerted by the rider on a drive train of the bicycle exceeds a first predefined rider torque threshold value.

Abstract: A control device of a drive of an electric bicycle is disclosed. The control device is designed to (i) receive and/or retrieve a rider's input torque applied by a rider of the electric bicycle, (ii) determine an output torque based on the rider's input torque in a first value range of the rider's input torque according to a first rule, in a second value range of the rider's input torque according to a second rule and in a third value range of the rider's input torque according to a third rule, (iii) determine a supporting torque based on the output torque, and (iv) control the drive in accordance with the supporting torque. The second value range directly adjoins the first value range and the third value range. The first rule and the second rule and the third rule are different from one another. And the second rule is a continuous function with the rider's input torque as input parameter.

Abstract: A method for operating a drive system of an electric bike includes (i) increasing a motor torque generated by way of a motor of the electric bike for a predetermined first time interval, (ii) reducing the motor torque immediately after the first time interval for a predetermined second time interval, and (iii) changing a transmission ratio of a gearshift system of the drive system during the second time interval.

Abstract: A method and a device, including a pedal-operated vehicle. The method includes detecting a particular riding situation and consequently operating the auxiliary drive unit situated on the vehicle, longer than in a normal riding situation, without the driver correspondingly detecting the angular motion of the pedals.

Abstract: A method for changing a transmission ratio of an electrically controllable gearing of a bicycle, in particular of an electric bicycle, includes (i) measuring a pedaling frequency of the bicycle rider on the pedal shaft, (ii) measuring a pedaling force of the bicycle rider, and (iii) determining a gear change operating state on the basis of the measured pedaling frequency and on the basis of the measured pedaling force if the measured pedaling frequency is less than or equal to a lower frequency threshold value or is greater than or equal to an upper frequency threshold value, and/or the measured pedaling force is less than or equal to a lower force threshold value or is greater than or equal to an upper force threshold value. After determining the gear change operating state, a control signal is generated for the gearing according to the determined gear change operating state.