An experiment method was used to identify ARX model of the system, based on which the predictive controller was obtained to control vibration of a cantilever beam.

通过实验方法建立了系统的ARX模型，并在此基础上设计了预测控制器对结构进行振动主动控制。

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The results show that the effects of orientation of piezoelectric ceramic on high order vibration characteristics of beam are low.

结果表明，当压电梁振动阶数较高时，陶瓷片的横向布置对梁的振动特性影响很小。

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The beam motion is divided into two parts: rigid rotation and flexible vibration.

假设梁的运动由刚性回转与柔性振动两部分组成。

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When sound waves enter the tube, the vibration of the droplets will cause the sensor to detect changes optically as the beam is disturbed, supposedly resulting in near-perfect vocal reproduction.

ENGADGET: Inventor patents laser microphone

Lasers use a light beam to cut away tooth decay before filling cavities, resulting in less vibration and pain than traditional drills, says Barry Jacobson, a pediatric dentist at Mount Sinai Medical Center in New York.

WSJ: To Cut Tooth Decay: A Laser vs. a Drill