JA rotating load is onnected to a DC motor with negligible inductance. A test result shows that the load reaches a steady-state speed of 60 rpm (revolutions per second) in 5 seconds when a constant...

Electrical Engineering control system EENG


Extracted text: JA rotating load is onnected to a DC motor with negligible inductance. A test result shows that the load reaches a steady-state speed of 60 rpm (revolutions per second) in 5 seconds when a constant voltage of 12 V is applied to the motor terminals. Let the input be the terminal voltage v(t), and the output be the angular velocity w(t) of the load. (a) Determine the DC gain and the time-constant of the system. (b) Obtain the transfer function of the system.