scholarly journals An Approach of Vibration Control Based on the Design of Three DOFs Active Vibration Damping Platform

2019 ◽  
Vol 224 ◽  
pp. 05010
Author(s):  
Yi Ye ◽  
Miaoxian Guo
Keyword(s):  
Numerical Simulations ◽  
Vibration Control ◽  
Natural Frequency ◽  
Maximum Stress ◽  
Active Vibration Control ◽  
Vibration Damping ◽  
Yield Limit ◽  
Maximum Displacement ◽  
Active Vibration Damping ◽  
Active Vibration

In this paper, an active vibration control platform is developed for milling processes. In this system, the workpiece is driven by a specially designed active platform to control the relative vibration between the tool and workpiece during milling processes. Numerical simulations are carried out to validate the effectiveness of the control platform. Results indicate that maximum stress of the hinge mechanism of the platform is far less than the yield limit of the material, and the designed platform can meet the use requirements in terms of the maximum displacement and natural frequency.

scholarly journals Editorial for Special Issue “Energy Dissipation and Vibration Control: Materials, Modeling, Algorithm, and Devices”

2020 ◽  
Vol 10 (2) ◽  
pp. 572 ◽  
Author(s):  
Gangbing Song ◽  
Hong-Nan Li ◽  
Steve C.S. Cai
Keyword(s):  
Energy Dissipation ◽  
Vibration Control ◽  
Active Vibration Control ◽  
Vibration Damping ◽  
Dynamic Responses ◽  
Special Issue ◽  
The Arts ◽  
Materials Modeling ◽  
Active Vibration ◽  
Energy Dissipation Devices

Many engineering systems, from subsea pipelines to space structures, from moving vehicles to stationary skyscrapers, are subject to unwanted vibration excitations. Often vibration control can be considered as a problem of energy dissipation and vibration damping. The aims of this issue are to accumulate, disseminate, and promote new knowledge about vibration control, especially for topics related to energy dissipation methods for vibration damping. Topics in this issue reflect the start-of-the-arts in the field of vibration control, such as inerter dampers and pounding tuned mass dampers (PTMDs). This special issue also reports other types of new energy dissipation devices, including a multi-unit particle damper, a nonlinear eddy current damper, and layered dampers. Also reported in this issue are structural elements with innovative designs to dissipate energy. In addition, this special issue also reports two research studies on the dynamic responses of a structural foundation and an earth-retaining structure. Though most papers in this special issue are related to passive methods, one paper reports a semi-active vibration control via magnetorheological dampers (MRDs), and another two papers report active vibration controls using piezoelectric transducers and inertial actuators, respectively.

Influence of Magnetic Conductive Rubber on Maglev Actuator in Active Vibration Control

2014 ◽  
Vol 926-930 ◽  
pp. 1365-1369
Author(s):  
Yuan Ni ◽  
Lin He ◽  
Chang Geng Shuai
Keyword(s):  
Finite Element ◽  
Dynamic Response ◽  
Numerical Simulations ◽  
Vibration Control ◽  
Active Vibration Control ◽  
Finite Element Models ◽  
Power Ratio ◽  
Conductive Rubber ◽  
Output Force ◽  
Active Vibration

Theoretical and finite element models of maglev actuator are both established. Magnetic conductive rubber is added into the actuator to improve its performance. Numerical simulations and experiments show that adding conductive rubber increases the output force-power ratio while reduces the dynamic response slightly.

Efficient Vibration Control with a Semi-Active Vibration Absorber in a Semiconductor Fab

2014 ◽  
Vol 564 ◽  
pp. 143-148 ◽  
Author(s):  
Teng Sheng Su ◽  
Chen Far Hung ◽  
Shu Hua Chang ◽  
Ting Hao Wu ◽  
Luh Maan Chang
Keyword(s):  
Control System ◽  
Vibration Control ◽  
Natural Frequency ◽  
Cantilever Beam ◽  
Active Vibration Control ◽  
Control Process ◽  
Vibration Absorber ◽  
Servo Motor ◽  
Resonant Condition ◽  
Active Vibration

In this paper a new type of semi-active vibration absorber has been developed. The vibration absorber consists of mass block, cantilever beam, magnet lock system, vibration and distance sensors, controller and servo motor. The mass block is fixed on the tip of cantilever beam, and the control process is driven by a servo motor and a transmit gears. Portion of cantilever was cut in form of gear tracks, which can be driven by servo motor through transmit gear to regulate the length of the cantilever beam, and the natural frequency of absorber will also be regulated. After the mass locates in right position (i.e. the natural frequency of absorber is in assigned condition), the magnetic lock will clamp the cantilever beam. The design has the benefit of simplified control system, and extra unknown vibration modes will be averted. A fabrication prototype of the proposed semi-active vibration absorber is constructed and tested to demonstrate the application and modeling of the new cantilever beam damper. By performing the experimental work, the semi-active vibration control system is designed not only for reduce vibration level in resonant condition, but also considered for vibration attenuation in non-resonant conditions.

A comparison of active vibration control techniques - Output feedback vs optimal control

1987 ◽  
Author(s):  
ZORAN MARTINOVIC ◽  
RAPHAEL HAFTKA ◽  
WILLIAM HALLAUER, JR. ◽  
GEORGE SCHAMEL, II
Keyword(s):  
Optimal Control ◽  
Vibration Control ◽  
Output Feedback ◽  
Active Vibration Control ◽  
Control Techniques ◽  
Active Vibration
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