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Answer Posted / chhote lal
by the help of P we calculate the error signal
Error signal=SP-PV (How Much)in the timming of pid tunning.
By the help of I we Remove the offset error-it will decide
how long the error exit in the cycle inthe timming of pid
tunning.
And by the help od D we fasten the control action-it will
decide how fast the control action to remove the error
without any overshoot for failure cycle.
at last
P=How Much(present)
I=How Long(past)
D=How Fast(future)
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