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The Mini 4WD originated in Japan in 1982, when toy manufacturer Tamiya introduced Mini 4WD race cars. A Mini 4WD race car is a 1:32 scale kit featuring four-wheel drive powered by an electric motor using a pair of AA batteries. A single electric motor turns both axles. These kits snap and screw together without the need for glue. [2]
Record Breakers: World of Speed were a line of battery operated Mini 4WD manufactured by Hasbro in the late 1980s to 1990s, originally in Japan and then brought to the US. To promote the toys Hasbro created the "National Association of Record Breakers" [ 1 ] and hosted races in shopping malls across the country.
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 winding scheme shows the execution of three-phase winding with 30 groups of coils at a winding pitch of 1:6 with the same width at a star connection. The combination of the star connections is depicted in form of a circle on the yellow contact bar. Each coil needs two slots.
A Dahlander motor (also known as a pole changing motor, dual- or two speed-motor) is a type of multispeed three-phase induction motor, in which the speed of the motor is varied by altering the number of poles; this is achieved by altering the wiring connections inside the motor.
Permanent magnet motors consist of two main types. Surface permanent magnet motors (SPM) and internal permanent magnet (IPM) motors. The main difference is that SPM motors place the magnets on the outside of the rotor while IPM motors place their magnets inside the motor. Benefits to internal magnets include structural integrity and reducing ...
The powertrain layout of a motorised vehicle such as a car is often defined by the location of the engine or motors and the drive wheels. Layouts can roughly be divided into three categories: front-wheel drive (FWD), rear-wheel drive (RWD) and four-wheel drive (4WD). Many different combinations of engine location and driven wheels are found in ...
Direct torque control (DTC) is one method used in variable-frequency drives to control the torque (and thus finally the speed) of three-phase AC electric motors.This involves calculating an estimate of the motor's magnetic flux and torque based on the measured voltage and current of the motor.