A servomotor is a precise actuator for controlling angular or linear position, consisting of an electric motor, feedback device, and electronic controller. It can be AC or DC, with options for brushed or brushless variants, and utilizes techniques like pulse width modulation for position control. Applications include robotics, conveyor systems, CNC machines, and more.

1. Sai kumar

2.  A servomotor is a rotary actuator or linear actuator that allows
for precise control of angular or linear position, velocity and
acceleration.
 Essentially, it consists of an
1. electric motor,
2. feedback device,
3. electronic controller.

3.  Motors can be either AC or DC
 Can be of 1 phase or 3 phase.
 DC motors can be brushed or brushless.
 Brushless DC motors are more expensive, drives are more
complex, but are more reliable and maintenance free.
 Feedback device for servomotors is typically an encoder or
resolver built into the motor frame.
 Control circuitry is a motion controller (generates motion) and
a drive to supply power to the motor

4.  AC servo motor
 Dc servo motor
 Continuous rotation servo motor
 Linear servo motor

5. 
Servo drive
PLC (transistor
type)
Servo motor
Power
source
contactor
Load

6.  Position control using Pulse Width Modulation Technique.
 The width of the pulse applied to the motor is varied and send
for a fixed amount of time.
 The pulse width determines the angular position of the servo
motor.
 For example
a pulse width of 1 ms -a angular position of 0 degrees,
a pulse width of 2 ms - a angular width of 180 degrees.

7.  Electronic amplifier used to power electric
servomechanisms.
 A servo drive monitors the feedback signal
from the servomechanism and continually
adjusts for deviation from expected behaviour.

8.  linear relationship b/n speed and electric control signal
 Steady state stability
 Wide range of speed control
 Low mechanical and electrical inertia
 Fast response

10.  Robotics
 Conveyor belts
 Camera auto focus
 Robotic vehicles
 Solar tracking system
 CNC machines
 Antenna positioning
 Metal cutting & metal forming m/c – millimg m/c, lathe,
grinding, pressing, punching, bending in metal fabrication.
 Textiles
 Printers
 Automatic door openers

12. Thank you….