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A motor used in an electric bicycle application requires high initial torque and therefore uses Hall effect sensors for speed measurement. Electric bicycle controllers generally use brake application sensors and pedal rotation sensors, and provide potentiometer-adjustable motor speed, closed-loop speed control for precise speed regulation ...
The ECM is a type of electronic control unit (ECU), which is an embedded system that employs software to determine the required throttle position by calculations from data measured by other sensors, including the accelerator pedal position sensors, engine speed sensor, vehicle speed sensor, and cruise control switches. The electric motor is ...
In variable-torque applications suited for Volts-per-Hertz (V/Hz) drive control, AC motor characteristics require that the voltage magnitude of the inverter's output to the motor be adjusted to match the required load torque in a linear V/Hz relationship. For example, for 460 V, 60 Hz motors, this linear V/Hz relationship is 460/60 = 7.67 V/Hz.
Deutsche Bahn pedelecs with rear hub motors and batteries placed inside the frames. This is the "Jetstream" from Riese und Müller. A Pedelec (from pedal electric cycle) or EPAC (electronically power assisted cycle), is a type of low-powered electric bicycle where the rider's pedalling is assisted by a small electric motor. However, unlike some ...
A variable speed motor drive is a system that includes a motor that is continuously variable in speed. If the motor is generating electrical energy rather than using it, the motor drive could be called a generator drive but is often still referred to as a motor drive. A variable frequency drive (VFD) or variable speed drive (VSD
The combination of governed engine speed with foot throttle override is in many ways similar to a modern cruise control. In spite of this development, steering column mounted hand throttles remained common, especially in mass-produced cars such as the Ford Model T. [7] Later cars used both a foot pedal and a hand lever to set the minimum throttle.
The switched reluctance motor (SRM) is a type of reluctance motor. Unlike brushed DC motors , power is delivered to windings in the stator (case) rather than the rotor . This simplifies mechanical design because power does not have to be delivered to the moving rotor, which eliminates the need for a commutator .
The Consumer Product Safety Act defines the term low speed electric bicycle as a two- or three-wheeled vehicle with fully operable pedals and an electric motor of less than 750 watts (1 horsepower), whose maximum speed on a paved level surface, when powered solely by such a motor while ridden by an operator who weighs 170 pounds, is less than ...
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