Nyquist
Plot Problem
Problem
Freq6P01
Assume that you are designing a speed control for an automobile.
The system has the following characteristics.
-
The motor has a time constant
of 1.5 sec.
-
The automobile has a time
constant of 4 sec. (When a constant torque is applied to the drive-shaft
the speed has a 4 sec. time-constant (first order) response.
-
The controller has a variable
gain, and a time constant of 0.5 sec.
The G(s) for the system
is:
G(s) = 10/[(1.5s +
1)(4s + 1)(0.5s + )]
Your Problem:
-
Sketch the Nyquist plot
for the system.