Microcontroller-based multiple-platform PWM signal generation procedures for industrial use

This contribution describes three procedures and the related software operations which are used to obtain the pulse-width modulation (PWM) signal for industrial use. The hardware platforms used to generate the signals are embedded systems, manufactured in recent years. Three types of microcontrollers based on their register architecture were used: 8-bit ATMEGA 328P, 16bit SAB80C167 and 32-bit PIC32MX320F128H. PWM is a preferred way for control in modern semiconductor devices. The very short rising and falling time ensure the minimum of switching transition time respectively of the switching losses. In this context, the paper will analyze comparatively a new structure, related on a classical reference structure, both the hardware and the software. At the end of the paper some conclusions might be drawn on the code length, system latency and the technical limitations of their usual or rated performance.