Assignment_2
SECOND SUBMISSION
Q1: A first order system
was assessed using a step response method and was found to have a time constant
of 1.5s.
a)
Describe
the basis for a step response
b)
Sketch a
typical graph of step response for a first order system and fully annotate.
c)
Determine
the open loop transfer function for this system.
(15
marks)
Q2: A first order system
was assessed using a frequency response test and was found to have a time
constant of 2s and a gain of 10dB.
a)
Describe
the method undertaken to obtain a frequency response.
b)
Sketch the
theoretical and your estimate for the actual bode plot for this system (you may
wish to use Log graph paper for this).
c)
Determine
the open loop transfer function for this system.
(25 marks)
Q3 The open loop transfer function for a
system is as follows:
a)
Sketch the
closed loop for this system where the feedback gain is 2
b)
Determine
the closed loop transfer function.
c)
Describe
the changes which ‘closing the loop’ has produced.
(20 marks)