The low rotational speed requirement for this motor proved to be the most difficult to design. High speed motors are very easily achieved and control is relatively straightforward using circuitry similar to that in our entry `Timing Revisited´.
This motor operates just above what might be considered to be its `stall´ velocity. Accurate rotational sensors control not only the duration of the power pulse but its amplitude too.
This motor uses two coils to power the rotor - the driver circuitry is similar to that found in a stepper motor.
The power consumption of this motor is substantially higher than our other designs, but it can still run 24/7 from the same small solar cell array.
Saturday, 19 June 2010
Dart Motor
