A method and a device for controlling an additional electric or motor drive of a vehicle that can be driven at least partially by the rider using a pedal drive. To derive the control of the drive, at least one first rotational movement variable is detected that represents the rotational movement of the pedals or the pedaling movement of the crank performed by the rider. The first rotational movement variable can be detected by one or more sensors. The drive is controlled or regulated dependent on a second rotational movement variable that is derived from the first rotational movement variable. At least one time constant that influences the follow-up time of the actuated or regulated drive is taken into consideration in addition to the first rotational movement that represents the pedaling movement of the rider. The time constant used may be varied to calculate the second rotational movement variable.

A method and a device for controlling an additional electric or motor drive of a vehicle that can be driven at least partially by the rider using a pedal drive. To derive the control of the drive, at least one first rotational movement variable is detected that represents the rotational movement of the pedals or the pedaling movement of the crank performed by the rider. The first rotational movement variable can be detected by one or more sensors. The drive is controlled or regulated dependent on a second rotational movement variable that is derived from the first rotational movement variable. At least one time constant that influences the follow-up time of the actuated or regulated drive is taken into consideration in addition to the first rotational movement that represents the pedaling movement of the rider. The time constant used may be varied to calculate the second rotational movement variable.

Tow bar arrangement (100) for interconnection of a pulling vehicle (10) and a pulled trailer (20). The arrangement (100) comprises a control device (110) with a force sensor (111) arranged to sense an instantaneous relative force between vehicle (10) and trailer (20). The control device (110) is arranged to produce a control signal for an electric motor (21) arranged to propel the trailer (20) so that a motor force counter-acts said measured force. The invention is characterised in that the control device (110) is arranged to a first time series of force measurements, in that the control device (110) comprises a low-pass filter (112) producing a second low-pass filtered time series, and in that a regulator (113) is ar-ranged to regulate said second time series to produce said control signal.

An electric assist system usable for an electric assist bicycle includes an electric motor that generates assist power assisting human power of a rider of the electric assist bicycle, a rotation sensor that outputs a signal in accordance with a rotation of a rotatable component that rotates to operate the electric assist bicycle, an acceleration sensor that outputs a signal in accordance with an acceleration of the electric assist bicycle in a traveling direction thereof, and a controller that calculates a speed of the electric assist bicycle based on an output signal of the rotation sensor and an output signal of the acceleration sensor.

An electric assist system usable for an electric assist bicycle includes an electric motor that generates assist power assisting human power of a rider of the electric assist bicycle, a rotation sensor that outputs a signal in accordance with a rotation of a rotatable component that rotates to operate the electric assist bicycle, an acceleration sensor that outputs a signal in accordance with an acceleration of the electric assist bicycle in a traveling direction thereof, and a controller that calculates a speed of the electric assist bicycle based on an output signal of the rotation sensor and an output signal of the acceleration sensor.

A motor unit includes a case, a motor, an input shaft, an input body, an output body, and a speed reducer mechanism. The input shaft penetrates through the case in an axial direction and is arranged to be rotatable. The input body is disposed along an outer peripheral surface of the input shaft and rotates along with the input shaft. The output body is arranged along the outer peripheral surface of the input shaft to be rotatable and receives rotational force from the input body. The case includes a first bearing, a second bearing, and a third bearing. The first bearing is located at one end in an axial direction and supports a rotary shaft unit including the input shaft, the input body, and the output body. The second bearing is located at the other end in the axial direction and supports the rotary shaft unit. The third bearing is located between the first bearing and the second bearing in the axial direction and supports at least one of the input body or the output body.

A motor unit, which is an example of an embodiment, includes a motor including a motor shaft, a rotor fixed to the motor shaft, and a stator, and a control board, the control board being disposed with at least a part of the control board overlapping the motor when viewed in a motor axial direction. A sensor that detects a magnetic field of the motor shaft, the rotor, or a rotating body rotating together with the motor shaft, and a control element that controls the motor using detection information of the sensor, are mounted on the control board. The control board includes a signal line that connects the sensor and the control element. The signal line includes an arcuate wiring section bent to be convex in a radial direction outer side of a circle centering on a shaft core of the motor shaft.

A motor unit, which is an example of an embodiment, includes a motor including a motor shaft, a rotor fixed to the motor shaft, and a stator, and a control board, the control board being disposed with at least a part of the control board overlapping the motor when viewed in a motor axial direction. A sensor that detects a magnetic field of the motor shaft, the rotor, or a rotating body rotating together with the motor shaft, and a control element that controls the motor using detection information of the sensor, are mounted on the control board. The control board includes a signal line that connects the sensor and the control element. The signal line includes an arcuate wiring section bent to be convex in a radial direction outer side of a circle centering on a shaft core of the motor shaft.

Disclosed is a system for controlling Classes of an eBike. The eBike having a motor and a motor controller. The system includes a server, a dashboard and an input unit. The server stores Classes instructions to operate the eBike in one of the one or more Classes. The dashboard includes a memory unit for storing motor instructions, a processing unit for processing the stored motor instructions to operate the motor under the instructions from the server, a display unit for displaying the processed instructions and the Classes instructions, and a bi-directional communication unit to communicate with the server. The input unit wirelessly communicates with the server. The Classes instructions includes a Classes display module to display the one or more Classes and a Classes module for allowing a user to select one of the one or more Classes via the input unit. The processed motor instructions are communicated to the motor via the motor controller to ride the eBike in the selected Class.

Disclosed is a system for controlling Classes of an eBike. The eBike having a motor and a motor controller. The system includes a server, a dashboard and an input unit. The server stores Classes instructions to operate the eBike in one of the one or more Classes. The dashboard includes a memory unit for storing motor instructions, a processing unit for processing the stored motor instructions to operate the motor under the instructions from the server, a display unit for displaying the processed instructions and the Classes instructions, and a bi-directional communication unit to communicate with the server. The input unit wirelessly communicates with the server. The Classes instructions includes a Classes display module to display the one or more Classes and a Classes module for allowing a user to select one of the one or more Classes via the input unit. The processed motor instructions are communicated to the motor via the motor controller to ride the eBike in the selected Class.