Abstract- The application of the two degree-of-freedom (2
DOF) theory to control non-minimum phase DC-DC switching
converters is investigated in this paper. The robust control
techniques mostly used to attain a regulated output voltage, even
under perturbed condition, for DC-DC boost converter are,
(both linear and nonlinear), -synthesis, genetic algorithm, linear
quadratic regulator (LQR) control. All of these control techniques
are one degree-of-freedom (1 DOF) i.e. conventional error-driven
in nature. The 1 DOF control technique suffers from the
limitation that there exists a compromise between response and
loop goal performances. To overcome this, in the present work, a
2 DOF linear time-invariant (LTI) controller has been designed to
achieve the performance goals of DC-DC PWM based boost
converter. A 2 DOF controller provides additional degree-offreedom
so as to meet the loop robustness goals as well as to shape
the output response according to requirement. The design
technique of this controller is simpler than that of the robust
control techniques mentioned above. The 2 DOF control scheme
has been shown to achieve the output regulation even in the
presence of 60% perturbation in load current and obtain fast
recovery in output voltage response, through simulation. The
veracity of the simulation results has been established through a
real-time experimental setup of the boost converter.