Velocity feedback control with time delay using piezoelectrics

被引：5
|
作者：
Roos, J [1 ]
Bruch, JC [1 ]
Sloss, JM [1 ]
Adali, S [1 ]
Sadek, IS [1 ]
机构：
[1] Univ Calif Santa Barbara, Dept Mech & Environm Engn, Santa Barbara, CA 93106 USA
来源：
SMART STRUCTURES AND MATERIALS 2003: MODELING, SIGNAL PROCESSING, AND CONTROL | 2003年 / 5049卷
关键词：
control with time delay; piezoelectric control; feedback control; smart structures;
D O I：
10.1117/12.482728
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
An elastic beam is sandwiched between two thin layers of mono-axially oriented piezoelectric material which act as a distributed vibration control. One layer acts as a distributed sensor while the other behaves as an actuator. A velocity feedback control with time delay is implemented in which the distributed sensor signal which is proportional to the time derivative of the sensor output is amplified and applied to the actuator after a time delay. Because of the nature of the problem the control action enters as a boundary control. The control effectiveness, changes in natural frequency and damping ratios, is analyzed for the case of a cantilever beam. Comparisons are also made with the uncontrolled case and the zero-delay system.
引用
收藏
页码：233 / 240
页数：8
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