Application of Pulsed Digital Oscillators in 'reverse mode' to eliminate undesired vibrations in high-Q MEMS resonators

被引：4
|
作者：
Dominguez, Manuel [1 ]
Pons, Joan [1 ]
Ricart, Jordi [1 ]
机构：
[1] Tech Univ Catalonia, Dept Elect Engn, Barcelona, Spain
来源：
2007 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS 1-11 | 2007年
关键词：
D O I：
10.1109/ISCAS.2007.378077
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
A new 'reverse mode' for Pulsed Digital Oscillators is proposed that cancels out unwanted vibrations in high-Q MEMS resonators. For a given resonator, PDOs may present two opposed behaviours, depending on the sign of the feedback signal and the sampling frequency: a) the feedback signal may force oscillations, or b) it can cancel out the oscillations reaching a limit orbit near the origin. This second behaviour can actually be used to cancel out unwanted vibrations. Theory and simulations results are presented. The case study considered is one in which the resonator has been hit and therefore it has suddenly increased its velocity.
引用
收藏
页码：925 / 928
页数：4
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