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
收藏
页码：140 / 143
页数：4
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