Higher order sliding mode design for Sigma-Delta modulator

被引：0
|
作者：
Tang, Zhi-Li [1 ]
Lei, Hu-Min [1 ]
机构：
[1] Missile Inst., Air Force Engineering Univ., Sanyuan 713800, China
来源：
Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics | 2008年 / 30卷 / 03期
关键词：
Demodulators - Dynamical systems - Feedback control - MATLAB - Modulators - Signal to noise ratio;
D O I：
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学科分类号：
摘要：
A high order sliding mode approach to design high order Sigma-Delta modulator is introduced because of the high order sliding mode has higher accuracy than the traditional one (one order sliding mode). Under design, the higher order Sigma-Delta modulator is regarded as a nonlinear dynamic system with feedback control, and is further divided into an object controlled and controller. Then the controller is designed by using the higher order sliding mode method. As an example, a three-order Sigma-Delta demodulator with 2-sliding mode is designed, and the result demonstrates that the modulator design based on the high order sliding mode has the higher rate of signal-to-noise and smaller quantized noise.
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页码：585 / 588
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