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PSO-Based Nonlinear PI-type Controller Design for Boost Converter
Sang-Wha Seo*, Yong Kim and Han Ho Choi**
Abstract This paper designs a nonlinear PI-type controller for the robust control of a boost DC-DC converter using a particle swarm optimization (PSO) algorithm. Based on the common knowledge that the transient responses can be improved if the P and I gains increase when the transient error is big, a nonlinear PI-type control design method is developed. A design procedure to autotune the nonlinear P and I gains is given based on a PSO algorithm. The proposed nonlinear PI-type controller is implemented in real time on a Texas Instruments TMS320F28335 floating-point DSP. Simulation and experimental results are given to demonstrate the effectiveness and practicality of the proposed method.
Keyword Particle swarm optimization (PSO), PI control, Boost converter, Uncertainty, Nonlinear system
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