Connecting multiple Servo Motors with Arduino seems to be easy. Here, we are going to show you how to control Multiple Servo Motors with Arduino. How to Control Multiple Servo Motors with Arduino Pulses need to be repeated for the motor to hold the position. If an external force is trying to change the position of the shaft, the motor resists changing. When servo motor is commanded to move by applying pulses of appropriate width, the shaft moves to and holds the required position. The servo turns to the 90˚ with the pulse of width 1.5 milliseconds. The servo moves with the pulse of 1 millisecond to turn motor towards 0˚ whereas a pulse of 2 milliseconds to turn motor towards 180˚. There are 3 terms that are used to control the servo motor: The width of the pulse controls the angular position of the rotating shaft. The width pulse is varied in the range of 1 millisecond to 2 milliseconds and transfer this to the servo motors with repeating 50 times in a second. These send electric signals of inconsistent width to the motor. The servo motors can be controlled by Pulse Width Modulation (PWM). Thus, a comparator is used to decide the ON/OFF position.Ĭontrolling of Servo Motor Using PWM Signal The motor gets ON for the desired time when the logical difference is higher and the motor gets OFF for the desired time when the logical difference is lower. Comparator signal is called a logic signal of the motor. On the basis of the feedback signal, the motor starts working. The input signal for the motor is termed as a feedback signal. For producing an output signal, the comparator is used to compare the required reference signal and the output signal is sensed by the sensor. This controller is composed of a comparator and a feedback path. The controller is required for this closed-loop system. The servo motor works on the phenomenon of the automatic closed-loop system. Shaft: The armature winding is coupled on the iron rod is known as the shaft of the motor.Įncoder: It has the approximate sensor which determines the rotational speed of motor and revolution per minute of the motor. ![]() It is also known as an armature winding of the motor.īearing: This is of two types, i.e font bearing and back bearing which are used for the movement of the shaft. Rotor Winding: This wound on the rotating part of the motor. It is also known as field winding of the motor. Stator Winding: This wound on the stationary part of the motor. The Servo motor is DC motor which has 5 following parts: ![]() ![]() There are many types of servo motors and their main feature is the ability to precisely control the position of their shaft. Servomotors are not a specific class of motor although the term servomotor is often used to refer to a motor suitable for use in a closed-loop control system. It also requires a relatively sophisticated controller, often a dedicated module designed specifically for use with servomotors. It consists of a suitable motor coupled to a sensor for position feedback. But before that let’s learn about the servo motor it’s working and also its applications.Ī servo motor is a rotary actuator or linear actuator that allows for precise control of angular or linear position, velocity, and acceleration. We will interface 4 servo Motors with Arduino and control its rotational movement using Pulse Width Modulation Signal. In this tutorial, we will learn How to Control Multiple Servo Motors with Arduino. How to Control Multiple Servo Motors with Arduino. ![]()
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