An automatic speed control system will be necessary for passenger cars traveling on the automatic highways of

Question:

An automatic speed control system will be necessary for passenger cars traveling on the automatic highways of the future. A model of a feedback speed control system for a standard vehicle is shown in Figure P4.6. The load disturbance due to a percent grade ΔTd(s) is also shown. The engine gain Ke. varies within the range of 10 to 1000 for various models of automobiles. The engine time constant тe is 20 seconds.
(a) Determine the sensitivity of the system to changes in the engine gain Ke.
(b) Determine the effect of the load torque on the speed.