Which of the following best describe Proportional IntegralDerivative (PID) Control?
a) A system that changes the output of a controller based on thedifference between the controlled variable and the setpoint, andhow long the input has been away from the setpoint.
b)A system that changes the output of a controller based on thedifference between the controlled variable and the setpoint.
c) A system that changes the output of a controller based on thedifference between the controlled variable and the setpoint, andhow long the input has been away from the setpoint, and how fastthe input is approaching the setpoint.
d)A system that changes the output of a controller based on thedifference between the controlled variable and the setpoint, andhow fast the rate of change is
