Patent classifications
B60L3/08
Rider Restrictions through Inter-Bicycle Communication
Electronic bicycles may communicate with each other to provide a communal biking experience to their riders. The electronic bicycles may collect rider data about their riders and may adjust the output parameters of the electronic bicycles based on the rider data. For example, the electronic bicycles may identify a weaker rider of the riders and may adjust the output parameters of the weaker rider's electronic bicycle to minimize a difference in the operation of the weaker rider's electronic bicycle and the stronger rider's electronic bicycle. Additionally, a parent rider may establish rider restrictions on an electronic bicycle ridden by a child.
SYSTEM AND METHOD FOR CONTROLLING A MAXIMUM VEHICLE SPEED FOR AN INDUSTRIAL VEHICLE BASED ON A CALCULATED LOAD
Controlling a maximum vehicle speed for an industrial vehicle includes determining, by a processor of the industrial vehicle, a torque applied to the traction wheel of the industrial vehicle; converting the torque to an equivalent force value; and determining an acceleration of the industrial vehicle while the torque is applied to the traction wheel. Additional steps include calculating a load being moved by the industrial vehicle, based at least in part on the acceleration and the equivalent force value; and controlling the maximum speed of the industrial vehicle based on the calculated load being moved by the industrial vehicle.
Traction control method and apparatus
An electric motor controller adapted to provide anti-lock braking of an electric traction motor for an electric vehicle is disclosed herein. The electric motor controller comprises a torque demand input for receiving a torque demand input signal based on a request from an operator of the electric vehicle and a torque demand adjuster adapted to adjust the torque demand input signal and to provide an adjusted torque demand signal. The torque demand adjuster is configured to adjust the torque demand signal such that the motor is controlled to reduce the difference between a motor speed and an estimated speed of the electric vehicle.
Traction control method and apparatus
An electric motor controller adapted to provide anti-lock braking of an electric traction motor for an electric vehicle is disclosed herein. The electric motor controller comprises a torque demand input for receiving a torque demand input signal based on a request from an operator of the electric vehicle and a torque demand adjuster adapted to adjust the torque demand input signal and to provide an adjusted torque demand signal. The torque demand adjuster is configured to adjust the torque demand signal such that the motor is controlled to reduce the difference between a motor speed and an estimated speed of the electric vehicle.
SPEED REDUCTION ASSEMBLY AND A VEHICLE THAT UTILIZES THE SPEED REDUCTION ASSEMBLY
A speed reduction assembly for an electric vehicle includes an electric machine configured to operate as a motor and as a generator. The electric machine includes an output shaft that is rotatable about a longitudinal axis at an output speed. The assembly also includes an output member coupled to the output shaft and rotatable about the longitudinal axis at a reduced speed. In addition, the assembly includes a pericyclic apparatus coupled to the output shaft and the output member to reduce the output speed of the output shaft to the reduced speed of the output member. A vehicle may include the speed reduction assembly in certain configurations. The vehicle includes a battery module and the electric machine is in electrical communication with the battery module to recharge the battery module when the electric machine operates as the generator.
SAFETY FUNCTION
In order to ensure particularly good protection of individuals in an electromagnetic transport system, a safety area is provided in a transport area. Furthermore, a safety function is provided which, in accordance with a predetermined safety requirement level, ensures that the transport unit reaches the safety area at a speed less than or equal to a safety speed and/or with a transport unit force less than or equal to a safety force and/or a transport unit energy less than or equal to a safety energy, or prevents the transport unit from reaching the safety area.
Powertrain architectures and control algorithms for intelligent electric scooters
Presented are adaptive propulsion assist systems and control logic for manually-powered vehicles, methods for making/using such systems, and intelligent electric scooters with distributed sensing and control-loop feedback for adaptive e-assist operations. A method for regulating a propulsion assist system of a manually-powered vehicle includes a vehicle controller detecting a user contacting the vehicle's handlebar, responsively receiving sensor signals indicative of a user-applied force to the handlebar, and then determining a net user-applied force based on the handlebar force and user-generated forces applied to the scooter deck. The vehicle controller also receives sensor signals indicative of the vehicle's current acceleration, and determines therefrom a pitch angle of the surface on which the vehicle moves. Responsive to the net force being greater than zero and the pitch angle being greater than a calibrated threshold angle, the controller commands the traction motor to increase motor torque output by a calibrated force gain increment.
SYSTEM AND METHOD FOR CONTROLLING A MAXIMUM VEHICLE SPEED FOR AN INDUSTRIAL VEHICLE BASED ON A CALCULATED LOAD
Controlling a maximum vehicle speed for an industrial vehicle includes determining, by a processor of the industrial vehicle, a torque applied to the traction wheel of the industrial vehicle; converting the torque to an equivalent force value; and determining an acceleration of the industrial vehicle while the torque is applied to the traction wheel. Additional steps include calculating a load being moved by the industrial vehicle, based at least in part on the acceleration and the equivalent force value; and controlling the maximum speed of the industrial vehicle based on the calculated load being moved by the industrial vehicle.
CONTROL APPARATUS, VEHICLE SYSTEM, AND CONTROL METHOD
A control apparatus includes: a data acquisition part that is configured to acquire torque data indicating a drive torque of an electric motor, rotation number data indicating a rotation number of the electric motor, and DC voltage data indicating a DC voltage supplied to an inverter which supplies an AC current to the electric motor; a determination basis derivation part that is configured to derive a determination basis based on a drive efficiency of the electric motor by using the torque data, the rotation number data, and the DC voltage data; and a control method determination part that is configured to determine, based on the determination basis, which one of a one-pulse control and a pulse-width modulation control is employed as a control method of the inverter.
CONTROL APPARATUS, VEHICLE SYSTEM, AND CONTROL METHOD
A control apparatus includes: a data acquisition part that is configured to acquire torque data indicating a drive torque of an electric motor, rotation number data indicating a rotation number of the electric motor, and DC voltage data indicating a DC voltage supplied to an inverter which supplies an AC current to the electric motor; a determination basis derivation part that is configured to derive a determination basis based on a drive efficiency of the electric motor by using the torque data, the rotation number data, and the DC voltage data; and a control method determination part that is configured to determine, based on the determination basis, which one of a one-pulse control and a pulse-width modulation control is employed as a control method of the inverter.