Title :
Robust digital control of a broadband PWM power amplifier
Author :
Suzuki, Nobutaka ; Higuchi, Kohji ; Kajikawa, Tatsuyoshi
Author_Institution :
Univ. of Electro-Commun., Chofu, Japan
Abstract :
Lately, it is required that a PWM power amplifier has a wide bandwidth and good robustness. For example, it is in application of a testing power supply of a low frequency immunity examination, or a class-D amplifier. In this paper, we show that the bandwidth of PWM power amplifier can be extended and the good robustnes can be attained by using an approximate 2-degree-of-freedom (2DOF) digital controller. This controller is implemented on a DSP. It is demonstrated from experiments that the broadband and robust PWM power amplifier can be realized with this controller.
Keywords :
PWM power convertors; digital control; digital signal processing chips; power amplifiers; robust control; wideband amplifiers; 2-degree-of-freedom digital controller; 2DOF digital controller; DSP; broadband PWM power amplifier; class-D ampllifier; low feequency immunity examination; power supply testing; robust PWM power amplifier; robust digital control; Bandwidth; Control systems; Digital signal processing; Power amplifiers; Power supplies; Pulse width modulation; Robustness; DSP; approximate 2DOF system; broad band PWM amplifier; robust digital control;
Conference_Titel :
Control, Automation and Systems (ICCAS), 2012 12th International Conference on
Conference_Location :
JeJu Island
Print_ISBN :
978-1-4673-2247-8
