Speed Control of the Direct Current Servomotor and the Stepper Motor with Arduino UNO Platform

Abstract

Servomotors are special direct current or alternating current electric machines which have an adjustable rotational speed in a wide range, in both directions and which aim at moving a mechanical system along a trajectory in a prescribed time. Servomotors are used in various applications: robotics, machine tools with numerical control, aerospace technology, medical installations and others. Stepper motors are special synchronous machines that have a different construction than the classic one and are used in precision drive systems, with open loop such as: aircraft on-board equipment, timing and recording systems, electronics, office equipment, robotics industrial, etc. This paper experiences the speed control of a direct current servomotor, type SM-S2309S, with the help of the Arduino UNO platform, which is the simplest solution for the development of electronic applications. The study experiences also speed and step control of a stepper motor, type 28BYJ-48, with the Arduino UNO platform.