Piezoelectric displacement feedback control with time delay

被引：5
|
作者：
Sloss, JM [1 ]
Adali, S [1 ]
Sadek, IS [1 ]
Bruch, JC [1 ]
机构：
[1] Univ Calif Santa Barbara, Dept Math, Santa Barbara, CA 93106 USA
来源：
SMART STRUCTURES AND MATERIALS 1999: MATHEMATICS AND CONTROL IN SMART STRUCTURES | 1999年 / 3667卷
关键词：
control with time delay; piezoelectric control; feedback control; smart structures;
D O I：
10.1117/12.350115
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Distributed vibration control of an elastic beam is analyzed. The elastic beam is sandwiched between two thin layers of mono-axially oriented piezoelectric material. One layer acts as a distributed sensor while the other behaves as an actuator. A displacement feedback control with a time delay is implemented. In this feedback, the distributed sensor signal which is proportional to strains 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. An evaluation of the control effectiveness, natural frequency and damping is made for the case of a cantilever beam. Comparisons are given with the uncontrolled cases and zero-delay systems.
引用
收藏
页码：649 / 656
页数：4
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