servo motor control using arduino

Servo motor controlled robotic claw

Presented by:

BHARATH.N.T

A BRIEF INTRODUCTION:

• A servomotor is a rotary actuator that allows for precise control of angular position, velocity and acceleration. It consists of a suitable motor coupled to a sensor for position feedback. It also requires a relatively sophisticated controller, often a dedicated module designed specifically for use with servomotors.

• 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.

• Servomotors are used in applications such as robotics, CNC machinery or automated manufacturing.

Inside the servo

Robotic arm

Description:

1.A robotic arm is a robotic manipulator, usually programmable, with similar functions to a human arm .

2.Servo motor is used for joint rotation, it has about same number of degree of freedom as in human arm.

3. Humans pick things up without thinking about the steps involved. In order for a robot or a robotic arm to pick up or move something, someone has to tell it to perform several actions in a particular order.

4. we can control each joint through computer interface to rotating the wrist to opening and closing the hand or fingers.

Servomotor control using Arduino

Pulse width modulation(pwm)

Arduino servo library details:

Application of Robotic Arm

The robotic arm can be designed toperform any desired task such aswelding, gripping, spinning etc.,depending on the application. Forexample robot arms in automotiveassembly line perform a variety oftasks such as wielding and partsrotation and placement duringassembly.

In space the space shuttle RemoteManipulator system have multidegree of freedom robotic arms thathave been used to perform a varietyof tasks such as inspections of theSpace Shuttle using a speciallydeployed boom with cameras andsensors attached at the end effector.

In medical science: "Neuroarm" usesminiaturized tools such as laser scalpelswith pinpoint accuracy and it can alsoperform soft tissue manipulation,needle insertion, suturing, andcauterization.

References

• Information on Arduino Servo library: http://www.arduino.cc/en/Reference/Servo http://www.arduino.cc/playground/Learning/SingleServoExample

• Additional descriptions of servos http://makeprojects.com/Wiki/Servos http://www.seattlerobotics.org/guide/servos.html