Electronics
With two transistors or with one transistor and an inductive element, the Elliptec Motor requires only half the electronics of traditional motors.
The control electronics of the Elliptec Motor can be easily integrated into a microcontroller environment. Even basic controllers can generate frequencies with the minimally required resolution of 1kHz (preferably 300Hz). Many even include a timer or a PWM unit so that the computation power is barely affected. Alternatively, analog circuits may be used as well.
The Elliptec Motor operates at two control frequencies. It moves forward at about 80kHz and backward at about 100kHz. The corresponding control software is provided as a programming example for the Atmel Tiny26 microcontroller in the download area.
Only one microcontroller pin with the PWM output signal is needed for controlling the Elliptec Motor. In the simplest implementation, the signal is first power amplified by two transistors before being supplied to the Elliptec Motor through a coil.
Alternatively, the power half-bridge AAT4900 by AnalogicTech ™ may be used. If the supply voltage exceeds 5V, an additional pre-stage transistor is needed.
For prototyping purposes and for small series production, a microcontroller-based control module with output stage is available.
The circuit diagrams for this Elliptec Controller may be found in the download area.
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