The terms like servo or servo-mechanism apply to those response control system which contains:
These are the following characteristics of a feedback control system:
ii Able to response fast;
iii. Can be operated by remote;
Following are the necessities of a feedback control system:
It is important because it checks the quantity which is unlike from the reference amount and directs the error signal to the amplifier.
It accepts the error signal,gives power to the error-correcting device, which converts the fixed quantity to maintain a link with the reference input.
A servo-motor should need the following characteristics: