Análisis gráfico de la rapidez angular del movimiento circular en tiempo real a partir de un dispositivo para el laboratorio de Física

Abstract

This paper presents a digital system for the control and monitoring of the angular velocity of a disk in real-time. The system is based on using an infrared optical sensor that detects interruptions in the slots of the rotating disk, coupled to the shaft of the DC motor. The rotational speed of the disk is dependent on the rotational speed of the motor shaft.  The motor rotation revolutions are controlled by a programmable microprocessor that generates a pulse width signal with variability. The system has serial communication with the computer. This type of communication sends the data recorded by the sensor and digitized by the microprocessor to an Excel sheet for their graphical representation. The graphs allow us to visualize the disk´s angular speed variability and establish characteristics to understand and comprehend what is taken for granted in theory.