Derivative (Rate) Control Theory
The final element of PID control is the “D” term, which stands for derivative. This is a calculus concept like
The final element of PID control is the “D” term, which stands for derivative. This is a calculus concept like
Distinguishing Characteristics P-only Accelerates the response of controlled process Produces offset except for integrating (1/s) processes PI Eliminates offset Usually
RATE OR DERIVATIVE ACTION Consider a control system subjected to a disturbance, which causes the error to increase in a ramped