MODULE 1
Servo Motor
, Contents
DC servomotors – field and armature controlled DC
servomotors – permanent magnet armature controlled –
series split field DC servomotor.
AC Servomotors- Construction-principle of operation –
performance characteristics –damped AC servomotors –
Drag cup servomotor – applications.
,Servo Motor
There are some special types of application of electric motor
where rotation of the motor is required for just a certain angle.
For these applications, we require some special types of motor
with some special arrangement which makes the motor to rotate
a certain angle for a given electrical input (signal).
The motors that are used in automatic control system is called
Servo Motor. This is nothing but a simple electric motor,
controlled with the help of Servomechanism.
Servo motor is a special type of motor which is automatically
operated up to a certain limit for a given command with the help
of error-sensing feedback to correct the performance.
Servomechanism – A feedback control system which is used to
control the position of the object.
, A servo system is a closed-loop system where the feedback signal
(position, velocity, acceleration, etc.) drives the motor.
This signal acts as an error and based on controller, accurate position or
velocity is achieved.
The motors are coupled to an output shaft (load) through a gear train for
power matching.
Servo motor acts as a mechanical transducer as they convert an electrical
signal to an angular velocity or position.
Servo Motor
, Contents
DC servomotors – field and armature controlled DC
servomotors – permanent magnet armature controlled –
series split field DC servomotor.
AC Servomotors- Construction-principle of operation –
performance characteristics –damped AC servomotors –
Drag cup servomotor – applications.
,Servo Motor
There are some special types of application of electric motor
where rotation of the motor is required for just a certain angle.
For these applications, we require some special types of motor
with some special arrangement which makes the motor to rotate
a certain angle for a given electrical input (signal).
The motors that are used in automatic control system is called
Servo Motor. This is nothing but a simple electric motor,
controlled with the help of Servomechanism.
Servo motor is a special type of motor which is automatically
operated up to a certain limit for a given command with the help
of error-sensing feedback to correct the performance.
Servomechanism – A feedback control system which is used to
control the position of the object.
, A servo system is a closed-loop system where the feedback signal
(position, velocity, acceleration, etc.) drives the motor.
This signal acts as an error and based on controller, accurate position or
velocity is achieved.
The motors are coupled to an output shaft (load) through a gear train for
power matching.
Servo motor acts as a mechanical transducer as they convert an electrical
signal to an angular velocity or position.
