Moreover, the design procedure of 2
DOF is simple compared to the design procedure involved in
control, -synthesis, genetic algorithm, LQR. Further, it
may be noted that the transfer function from the control input
to the output voltage for boost converter, always contains a
right half plane (RHP) zero, which is termed as non-minimum
phase zero. The presence of this RHP zero restricts the loop
goal performance, more specifically, gain margin and
bandwidth. The challenge of the present work is to achieve
satisfactory robustness even in presence of this non-minimum
phase zero with 2 DOF control, which has not yet been
employed as a robust control technique in literature. The 2
DOF control, employed here, is shown to achieve similar
results through both simulation and experiment, what the
robust controllers have achieved in literature [1]-[9].
The paper is organized as follows. Two degree-of-freedom (2
DOF) control scheme is discussed in Section II. The boost
converter considered in the present work is given in Section
III. The controller design and synthesis are presented in
Section IV. Results and discussion are in Section V.
Conclusions that have been drawn from the present work are
summarized in Section VI.