Design of adaptive fuzzy logic controller for auto-adjustable DC-DC converters

Author

Wang, Qing ; Chang, Chuang-Yuan ; Shi, Long-xing

Author_Institution

Sch. of Integrated Circuit, Southeast Univ., Nanjing, China

fYear

2010

Firstpage

469

Lastpage

471

Abstract

This paper introduces an approach for the design of an adaptive non-linear digital Fuzzy logic controller for a digital controlled auto-adjustable Buck DC-DC converter, which is validated by Simulink tools of Matlab. The setup time of the output voltage was about 10μs and the steady state error was less than 2mV with the proposed controller. When the supply voltage or load current was disturbed, the output reached stability again after 15μs. And the output voltage tracked the change of the reference voltage in 15μs. The results show that its dynamic response was quick and its sensitivity was very interesting for various supply voltages and load resistance variations.

Keywords

DC-DC power convertors; adaptive control; control system synthesis; dynamic response; fuzzy control; mathematics computing; nonlinear control systems; Matlab-Simulink; adaptive fuzzy logic controller; auto-adjustable buck dc-dc converters; dynamic response; load current; load resistance; steady state error; supply voltage; time 15 mus; Accuracy; Converters; Fuzzy control; Fuzzy logic; Niobium; Simulation; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology (ICSICT), 2010 10th IEEE International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-5797-7

Type

conf

DOI

10.1109/ICSICT.2010.5667668

Filename

5667668