Design of a Self-Oscillating Class D Power Amplifier for Piezoelectric Actuators

被引：0
|
作者：
Liu, Xinchang [1 ]
Germano, Paolo [1 ]
Civet, Yoan [1 ]
Perriard, Yves [1 ]
机构：
[1] Ecole Polytech Fed Lausanne, Integrated Actuators Lab LAI, CH-1015 Lausanne, Switzerland
来源：
2014 17TH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS) | 2014年
关键词：
D O I：
暂无
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：
A design of a delay based self-oscillating class-D power amplifier for piezoelectric actuators is presented and modelled. First order and second order configurations are discussed in detail and analytical results reveal the stability criteria of a second order system, which should be respected in the design. It also shows if the second order system converges, it will tend to give a correct pulse modulation regarding to the input modulation index. Experimental results show the effectiveness of this design procedure. For a piezoelectric load of 400 nF, powered by a 150 V 10 kHz sinusoidal signal, a total harmonic distortion (THD) of 4.3% is obtained.
引用
收藏
页码：3386 / 3391
页数：6
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