Research on Vibration Isolating with Magneto-Rheological Damper

2011 ◽  
Vol 328-330 ◽  
pp. 2190-2193
Author(s):  
Zhao Wang Xia ◽  
Xiao Min Qi ◽  
Hua Bing Wen
Keyword(s):  
Vibration Isolation ◽  
Passive Control ◽  
Mechanical Response ◽  
Mr Damper ◽  
Model Parameters ◽  
Test Model ◽  
Isolation System ◽  
Vibration Isolation System ◽  
Proposed Model ◽  
Magneto Rheological

This work presents a test model of a vibration isolation system with magneto-rheological (MR) damper, and the Bingham model to describe the dynamic process of mechanical response for the MR damper. The analytical solution of the system in passive control is obtained via the averaging method, and verified numerically. The parameters which affect the performance of the vibration isolation are adjusted appropriately; the effects of the parameter are quantitatively or qualitatively analyzed.The proposed model utilizes a method that can be employed in a variety of dynamic systems. Moreover, the model parameters have direct physical significance to the MRF damper properties.

Performance Evaluation of Semi-Active Control With Magnetorheological Damper

2005 ◽  
Author(s):  
Shaopu Yang ◽  
Cunzhi Pan ◽  
Shuqi Guo
Keyword(s):  
Performance Evaluation ◽  
Time Delay ◽  
Vibration Isolation ◽  
Mechanical Response ◽  
Control Strategies ◽  
Mr Damper ◽  
Magnetorheological Damper ◽  
Electromagnetic Response ◽  
Test Model ◽  
Isolation System

In this paper, a test model of a vibration isolation system with magnetorheological (MR) damper is introduced, and a simplified model using the time delay to describe the dynamic process of mechanical response and electromagnetic response for the MR damper is presented. Based on simulation, the performance evaluation with different control strategies, especially, the effects of time delay are investigated. The results show that the performance of the controlled system is highly dependent on the choice of the control strategies, and the effectiveness of semi-active on-off control is significantly determined by the time delay from the command current signal to the magnetic field of the MR damper.

A Variable Stiffness Vibration Isolation System Based on Magneto-Rheological Elastomer

2012 ◽  
Vol 452-453 ◽  
pp. 659-662
Author(s):  
Wei Wang ◽  
Yi Min Deng
Keyword(s):  
Shear Modulus ◽  
Vibration Isolation ◽  
Variable Stiffness ◽  
Control Area ◽  
Frequency Range ◽  
Isolation System ◽  
Vibration Isolation System ◽  
Vibration Isolators ◽  
Magneto Rheological ◽  
Conventional Type

Vibration isolation is a most widely used vibration protection method.The stiffness of vibration isolators in existing conventional type of vibration isolation system is usually of fixed value. This limits the system in exhibiting its vibration isolation effect in that, it has poor results for lower frequency vibration, especially for resonance frequency. Magneto-rheological elastomer is a new branch of Magneto-rheological materials. It’s an intelligent materials in that it’s shear modulus can be controlled by a magnetic field. It has wide application prospects in the vibration control area. This paper proposes using adjustable stiffness of magneto-rheological elastomer vibration isolation in vibration isolation system. By changing the current of vibration isolators coil to control the shear modulus of magneto-rheological elastomer, it can adjust the stiffness of the isolation system, making the system obtain wider vibration isolation frequency range. By exploying SimuLink software to analyze the vibration isolation system, it is found that such a design is effective and applicable.

Research on Comprehensive Control of Vibration Isolation System with Flexible Foundation

2011 ◽  
Vol 55-57 ◽  
pp. 872-876
Author(s):  
De Zhen Feng ◽  
Fang Zhou ◽  
Zai Mei Zhang ◽  
Hua Guan Liu
Keyword(s):  
Power Flow ◽  
Vibration Isolation ◽  
Passive Control ◽  
Positive Control ◽  
Matrix Analysis ◽  
Isolation System ◽  
Vibration Isolation System ◽  
Practical Engineering ◽  
Flexible Foundation ◽  
Vibrational Power Flow

The paper analyzes the dynamic relation of asymmetric multi-supported vibration isolation system with flexible foundation, establishes the comprehensive model of passive control and positive control system by using the effective matrix analysis method, analyzes the transmission mechanism and characteristic of vibrational power flow in the flexible vibration isolation system. In order to meet the need of the practical engineering, the paper analyzes and calculates the effect of the machine mass on the input and the transmission power flow in detail. At last, the paper puts forward the measure to reduce vibration energy transmission.

PID Control of a Parallel Vibration Isolation System Based on Pneumatic Artificial Muscle

2014 ◽  
Vol 1061-1062 ◽  
pp. 899-903
Author(s):  
Yan Bin Liu ◽  
Jia Jia Ma ◽  
Chen Xu Yin
Keyword(s):  
Pid Control ◽  
Vibration Isolation ◽  
Passive Control ◽  
Artificial Muscle ◽  
Frequency Effect ◽  
Measuring Instruments ◽  
Pneumatic Artificial Muscle ◽  
Isolation System ◽  
Vibration Isolation System ◽  
Precision Measuring

In the ultra precision measuring and machining, precision measuring instruments and precision accuracy are not only related to the precision of the instrument itself, the vibration from the surrounding environment, and many other factors also determine the accuracy of the measurement and processing. In order to solve the micro-amplitude vibration and shock proof problem of high precision equipment, the article adopted the active vibration isolation technology to build the vibration isolation experiment system based on the pneumatic artificial muscle as the action, according to the characteristics of the vibration isolation system and performance requirements, The experiment was completed by using PID control algorithm. By comparing with passive control, the results show that the vibration isolation system has good broadband vibration isolation effect, in the low frequency, effect is remarkable. This study laid a foundation for further control of pneumatic muscle in isolation system.

scholarly journals Bifurcations and chaos of a vibration isolation system with magneto-rheological damper

AIP Advances ◽  
2016 ◽  
Vol 6 (3) ◽  
pp. 035310 ◽  
Author(s):  
Hailong Zhang ◽  
Ning Zhang ◽  
Fuhong Min ◽  
Wei Yan ◽  
Enrong Wang
Keyword(s):  
Vibration Isolation ◽  
Isolation System ◽  
Vibration Isolation System ◽  
Magneto Rheological
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