Feed-forward adaptive system for vibration and sound radiation reduction phase II: design, realization, and experimental results

1998 ◽  
Author(s):  
Cesare Constantin ◽  
Francesco Fusco ◽  
Michele Inverno ◽  
Romualdo Sorrentino
Keyword(s):  
Phase Ii ◽  
Adaptive System ◽  
Sound Radiation ◽  
Experimental Results ◽  
Radiation Reduction ◽  
Feed Forward ◽  
Vibration And Sound Radiation

Effect of Different Input Loading Form on Structure-Born Sound Radiation

2012 ◽  
Vol 518-523 ◽  
pp. 3768-3771
Author(s):  
Zhi Yong Xie ◽  
Qi Dou Zhou ◽  
Gang Ji
Keyword(s):  
Experimental Data ◽  
Forced Vibration ◽  
Sound Radiation ◽  
Added Mass ◽  
Elastic Vibration ◽  
Simulation And Experiment ◽  
Radiation Induced ◽  
Vibration And Sound Radiation ◽  
Loading Form ◽  
Good Agreement

The exciting force’s accurate measurement of is crucial to the structure-born sound radiation. Forced vibration and sound radiation of the ribbed cylinder is examined in the anechoic room. An approach called added mass and damping method is proposed to calculate the elastic vibration and acoustic field of the cylinder. Results obtained from simulation are show to be in good agreement with the experimental data. Sound radiation induced by different input loading form is examined via simulation and experiment. And the equipollence of force and pressure acting on the base is validated.

Verification of the feed-forward control for a piezoelectric actuator using differential flatness approach

2018 ◽  
Vol 30 (3) ◽  
pp. 438-444
Author(s):  
Jomah Alzoubi ◽  
Shadi A Alboon ◽  
Amin Alqudah
Keyword(s):  
Mobile Devices ◽  
Piezoelectric Actuator ◽  
Experimental Results ◽  
Control Voltage ◽  
Differential Flatness ◽  
Digital Cameras ◽  
Precise Positioning ◽  
Feed Forward ◽  
Feed Forward Control ◽  
Micro Technology

In the last decade, the applications of nano- and micro-technology are widely used in many fields. In the modern mobile devices, such as digital cameras, there is an increased demand to achieve fast and precise positioning for some parts such as the recording sensor. Therefore, a smart material (piezoelectric) is used to achieve this requirement. This article discusses the feed-forward control for a piezoelectric actuator using differential flatness approach. The differential flatness approach is used to calculate the required voltage to control the piezoelectric actuator movement. The control voltage will be applied to the real actuator. The simulation and experimental results are compared for the actuator. The aim of this article is to verify the feed-forward control for second eigenfrequency using the differential flatness approach for the piezoelectric actuator.

Roll-Gap Control System of Twin Roll Strip Caster Based on Feed Forward-Feedback

2013 ◽  
Vol 750 ◽  
pp. 64-67
Author(s):  
Wen Yu Zhang ◽  
Dong Ying Ju ◽  
Yao Yao ◽  
Hong Yang Zhao ◽  
Xiao Dong Hu ◽  
...  
Keyword(s):  
Control System ◽  
Control Strategy ◽  
Feedback System ◽  
Experimental Results ◽  
Convergence Time ◽  
Feed Forward ◽  
Gap Control ◽  
Roll Gap ◽  
Twin Roll

In this paper, the established control system and its control algorism of a new twin roll strip caster developed by authors is presented. It is illustrated the roll-gap control strategy of the twin roll strip caster based on a feed forward-feedback system. From the experimental results, the susceptibility of control convergence time, stable and accurate are shown on a higher level than traditional control strategy.

scholarly journals Characteristics of Vibration and Sound Radiation of Metro Resilient Wheel

2019 ◽  
Vol 32 (1) ◽  
Author(s):  
Xin Zhou ◽  
Jian Han ◽  
Yue Zhao ◽  
Bing Wu ◽  
Gong Cheng ◽  
...  
Keyword(s):  
Sound Radiation ◽  
Vibration And Sound Radiation
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