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What is mean by PID controller? And what is its Long form?
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Answer Posted / 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
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