Design of Digital Robust Controller for a Class-D Amplifier Using A2DOF

被引：0

作者：

Kaku, Kikon ^{[1
]}

Higuchi, Kohji ^{[1
]}

Jirasereeamornkul, Kamon ^{[2
]}

机构：

[1] Univ Electrocommun, 1-5-1 Chofugaoka, Chofu, Tokyo 1828585, Japan

[2] KMUTT, 126 Prache Uthit Rd Bangmond Tungkru, Bangkok 10140, Thailand

来源：

2016 INTERNATIONAL ELECTRICAL ENGINEERING CONGRESS, IEECON2016 | 2016年

关键词：

class-D amplifier; digital robust control; A2DOF; DSP;

D O I：

10.1016/j.procs.2016.05.035

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In recent years, it is desired that the bandwidth of a class-D amplifier is widened using sampling frequencies as low as possible. For example, it is expected in the application of the power supply of a low frequency immunity test, or an audio power amplifier, or the power amplifier of vibration generator. In this paper, it is shown that the bandwidth of the class-D amplifier can be widened to 20[kHz] by an A2DOF (Approximate 2-Degree-Of-Freedom) digital controller with 500[kHz] sampling frequencies. The controller is implemented by a DSP (digital signal processor). It is shown from experiments that 20[kHz] bandwidth can be maintained even if load changes. (C) 2016 The Authors. Published by Elsevier B.V.

引用

页码：140 / 143

页数：4