459801.fig.003a
(a) State variables of and
459801.fig.003b
(b) State variables of and
459801.fig.003c
(c) State variables of and
459801.fig.003d
(d) Error states of the drive system (8) and response system  (10)
Figure 3: The state synchronization variables and errors between the drive system (8) and response system (10) with time delay and scaling factors .