Optimized sliding mode control for DC-DC converters using simplex-PSO techniques

Sliding mode control (SMC) is well known for its robustness and efficiency to deal with a wide range of control problems with nonlinear dynamics such as DC-DC power converters. In this paper, an optimized and fixed switching frequency sliding-mode policy for controlling DC-DC converters is proposed. There are two main contributions, in this paper; in the first we give a comprehensive proof of the SMC technique based on the converter functioning principle. In the second contribution, we provide a method of SMC parameters selection using simplex method. This allows obtaining the admissible ranges for SMC parameters while taking into account particle considerations about the converter. Then, theses ranges will be used as search space by the particle swarm optimization technique (PSO) to find the optimal controller parameters.