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In this paper, we implemented on a microcontroller a modified-wave reference signal (DPWM-S2) modulated by an Inverted Sine Pulse Width Modulation (ISPWM). The microcontroller commands a three-phase asynchronous motor by means of a three-phase inverter. The results obtained from the practical application were compared to the ones obtained from a practical application using the reference signal (DPWM-S2)...
In this paper we describe a DPWM-S3 software control method implemented on a microcontroller. This technique was tested by simulations and in practice on a three-phase inverter with an AC motor (0.37 kW) as output load.
The paper presents a new analog mode membership function circuit, suitable for adaptive fuzzy logic controllers. The circuit is very flexible: the membership function's slope, support and high are electrically tuned by a set of current values.
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