Inertial long-stroke linear actuator for low-frequency vibration control

1998 ◽  
Author(s):  
Scott W. Greeley ◽  
Clark A. Updike
Keyword(s):  
Vibration Control ◽  
Low Frequency ◽  
Linear Actuator ◽  
Low Frequency Vibration ◽  
Long Stroke

scholarly journals A Review of Low-Frequency Active Vibration Control of Seat suspension Systems

2019 ◽  
Vol 9 (16) ◽  
pp. 3326 ◽  
Author(s):  
Zhao ◽  
Wang
Keyword(s):  
Vibration Control ◽  
Active Vibration Control ◽  
Low Frequency ◽  
Control Algorithms ◽  
Seat Suspension ◽  
Suspension Systems ◽  
Low Frequency Vibration ◽  
Recent Developments ◽  
Active Vibration ◽  
Artificial Neural Network Ann

As a major device for reducing vibration and protecting passengers, the low-frequency vibration control performance of commercial vehicle seating systems has become an attractive research topic in recent years. This article reviews the recent developments in active seat suspensions for vehicles. The features of active seat suspension actuators and the related control algorithms are described and discussed in detail. In addition, the vibration control and reduction performance of active seat suspension systems are also reviewed. The article also discusses the prospects of the application of machine learning, including artificial neural network (ANN) control algorithms, in the development of active seat suspension systems for vibration control.

Low Frequency Vibration Control of the Offshore Fixed Platforms by Using Tuned Liquid Column Damper

2014 ◽  
Author(s):  
Chan Hui Lee ◽  
Heui Won Kim ◽  
Won Ho Joo
Keyword(s):  
Vibration Control ◽  
Low Frequency ◽  
Tall Buildings ◽  
Liquid Column ◽  
Scale Model ◽  
Small Scale ◽  
Tuned Liquid Column Damper ◽  
Low Frequency Vibration ◽  
Design Variables ◽  
Liquid Column Damper

The offshore fixed platforms are confronted with greater wind and wave forces as their installation site moves toward the deep sea, so it is definitely necessary to reduce the low frequency vibration of structures for the safety and comfort of crews. The dynamic dampers are generally used to reduce vibration of structures. Especially, the tuned liquid column damper (TLCD) has been applied to reduce the low frequency vibration of onshore tall buildings. In this paper, the design procedure of TLCD is proposed to control the low frequency vibration of fixed platforms through the simulation and experiment with a small-scale model. The vibration control target is the surge motion of fixed platforms and the major design variables of TLCD are mass and damping ratios. The optimized design variables of TLCD are determined from the calculation of the amplification factor. In the experiment, the effects of mass and damping ratios are considered by changing the breadth of column, the opening ratio and number of the orifices. The results of experiment are found to well agree with the simulation. The 83% of structure vibration level can be reduced by applying the optimized TLCD.

scholarly journals Monocular vision-based low-frequency vibration calibration method with correction of the guideway bending in a long-stroke shaker

2019 ◽  
Vol 27 (11) ◽  
pp. 15968
Author(s):  
Ming Yang ◽  
Ying Wang ◽  
Chenguang Cai ◽  
Zhihua Liu ◽  
Haijiang Zhu ◽  
...  
Keyword(s):  
Low Frequency ◽  
Calibration Method ◽  
Monocular Vision ◽  
Low Frequency Vibration ◽  
Long Stroke

Low-frequency vibration control of floating slab tracks using dynamic vibration absorbers

2015 ◽  
Vol 53 (9) ◽  
pp. 1296-1314 ◽  
Author(s):  
Shengyang Zhu ◽  
Jizhong Yang ◽  
Hua Yan ◽  
Longqing Zhang ◽  
Chengbiao Cai
Keyword(s):  
Vibration Control ◽  
Low Frequency ◽  
Vibration Absorbers ◽  
Dynamic Vibration ◽  
Low Frequency Vibration ◽  
Dynamic Vibration Absorbers
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