標題: | Analysis and design of the receding horizon constrained optimization for class-D amplifier driving signals |
作者: | Hu, Jwu-Sheng Chen, Keng-Yuan 電控工程研究所 Institute of Electrical and Control Engineering |
關鍵字: | Amplifiers;Digital filter;Modulation;Quantization;Receding horizon quadratic optimal control |
公開日期: | 1-十二月-2010 |
摘要: | This paper reports the analysis and design method of receding finite horizon constrained optimization approaches to generate driving signals for digital amplifiers. The performance of a digital amplifier that is based on power MOSFETs highly depends on the modulator that modulates the reference signal into binary sequences. The concept of receding finite horizon constrained optimization modulator is to generate the binary output in the sense that the power of filtered error is minimized. The stability analysis of this nonlinear feedback system is derived in detail and the method to estimate the bound of filtered error of the high dimensional quantization is proposed. A second order system with horizon length one and two is designed to produce a 1.5-bit constrained output. Simulation results demonstrate the accuracy of the analysis. (C) 2010 Elsevier Inc. All rights reserved. |
URI: | http://dx.doi.org/10.1016/j.dsp.2010.03.005 http://hdl.handle.net/11536/31893 |
ISSN: | 1051-2004 |
DOI: | 10.1016/j.dsp.2010.03.005 |
期刊: | DIGITAL SIGNAL PROCESSING |
Volume: | 20 |
Issue: | 6 |
起始頁: | 1511 |
結束頁: | 1525 |
顯示於類別: | 期刊論文 |