Answer / prerit

Pid means PROPORTIONAL INTEGRAL DERIVATIVE controller

Answer / bhavini

pid means proportional integral derivative its use for
control system for for o/p feedbak should be minimize and
looping the i/p and o/p by using PID controller

Answer / shubham

PID controller has three controlers in it
1) proportional control- control signal U(s) directly
proportional to error E(s). just like drivers controling its
vehicle speed...jitna desired speed se variation uyna jjyada
accelerator ghumana
2)integral control- U(s) is proportional to integraof errors
uptil time T. i.e. U(s) is changed not only according to the
previous value of error but it changes with the summation of
the errors found earlier
3)derivative control- u(s) directly proportional to the rate
of change of error i.e. if rate of change of E is hhigh then
U is high and viceversa

Answer / pravin

A proportional–integral–derivative controller (PID
controller) is a generic control loop feedback mechanism
(controller) widely used in industrial control systems – a
PID is the most commonly used feedback controller. A PID
controller calculates an "error" value as the difference
between a measured process variable and a desired setpoint.

Answer / thirunaavukkarasu

PID - Proportional plus Integral plus Derivative Controller.
This PID is used to reduce the steady state error obtained
in the output waveform. Steady state error does not allow
waveforms to settledown easier.
Proportional is used to process the present data of the
system and Integral is used to process the present plus
past data of the system where as derivative take the future
data also into account.

Answer / vijayaprakash

1) PID Controller is controller. this is having one input
and one output. it controls only one system. it is a closed
loop control system.
2) PID long form Proportional Integral derivative

Answer / ys.kumar.

propotional integral drivation.

Answer / santanu sen

PID controller is also known as proportional integral derivative controller. The two main types of operation integral and derivative controller are used. The integral controller is used to minimize the steady state error of the response characteristics, it is the same as adding a pole to the transfer function of the control system. The purpose of the derivative controller is to fasten up the transient response, as the peak value is obtained earlier than the normal response, just as adding a zero to the transfer function of the control system. The proportional controller can be realized for two purposes:-
1. The derivative controller cannot be realized alone so therefore there must be a proportional controller for the same.
2. The proportional controller is also used to adjust the gain of the control system within the limits of the s- plane, otherwise may lead to instability.

Answer / harsh

pid controller is used to obtain a wave which is the
summation of 3 different waves, 1st part-which is
proportional to the input wave, 2nd-which is the integrated
value of the original wave, 3rd-which is the derivative of
th e original wave. As the name suggests;pid-proportional
integral derivative controller

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