An adder generates a final control signal by adding {TAIL ~ the first and the second control signals} and provides the final control signal to the plant, wherein {HEAD ~ the final control signal} is used to control the plant 
An adder generates a final control signal by adding { TAIL ~ the first and the second control signals } and provides the final control signal to the plant , wherein { HEAD ~ the final control signal } is used to control the plant
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH