Consider the two-mass model shown in Figure P11.50. Use the following numerical values: m1 = m2 = 1, k1 = 1, k2 = 4, and c2 = 8.
a. Use MATLAB to obtain the root locus plot in terms of the parameter c1.
b. Use the root locus plot to determine the value of c1 required to give a dominant root pair having a damping ratio of ( = 0.707.
c. Use the root locus plot to determine the value of c1 required to give a dominant root that is real and has a time constant equal to 4.

d. Using the value of c1 found in part (c), obtain a plot of the unit-step response.

Transcribed Image Text:

CI fa) m2k2 mi