ABSTRCT: Elastic bearings have been used on simply supported bridges on high-speed railway in Taiwan to isolate train-induced vibration. However, their influence on dynamic behavior of the vehicle and bridge has not been fully investigated, and their vibration attenuation has not been quantificationally discussed. In this study, spring-damper elements with 12 degrees of freedom are established ...

Long stroke and nanometer precision positioning technology based on dual stage has important applications in the fields of ultra precision machinery and equipment, which consists of a coarse stage for long stroke and a fine one for high precision. In order to further suppress the positioning noise of dual stage, we design an abdominal and passive damper for the fine stage. However, it becomes a...

In this paper, an in-wheel vibration absorber for In-wheel-motor electric vehicle (IWM EV) is designed, and a comprehensive control strategy of in-wheel absorber and vehicle suspension is proposed to improve vehicle ride comfort. The proposed in-wheel vibration absorber, designed for suppressing the motor vibration, is composed of a spring and a controllable damper. The values of in-wheel sprin...

In this research, a finite element model is established to investigate effective seismic control schemes for self-anchored suspension bridge (SASB) with three towers. Nonlinear dynamic analyses are conducted evaluate the performance of SASB different layout viscous dampers and buffers, which were installed in longitudinal direction transversal direction, respectively. The responses designed 10 ...

In this study, active suspension control of the interaction between bridge can be modeled according to Euler-Bernoulli beam theory, and quarter car model with three degrees freedom is studied. The system consists a spring, damper, linear actuator. designed using classical PID self-tuning fuzzy (STFPID) reduce vehicle body's disruptive effects. To determine performance controllers, two different...

A method of active vibration control using regenerated vibration energy, i.e., the self-powered active vibration control is proposed. In this system, vibration energy is regenerated with an electric generator ,which is called energy regenerative damper, and is stored in a condenser. An actuator attains active vibration control using the energy stored in the condenser. A variable resistance is u...

In the field of Automation, Fuzzy Control Fuzzy control has significant merits which are utilized in intelligent controllers, especially for vibration control systems. This paper is concerned with the application aspects of the developed MR damper for landing gear system, to attenuate the sustained vibrations during the landing phase. Also a comparative study is made on the responses obtained f...

A method for training patterns validation for modelling MR damper is proposed. The method was validated with two models based on black-box and semi-phenomenological approaches. An input pattern that allows a better identification of the MR damper model was found. Including a frequency modulated displacement and increased clock period in the training pattern, the MR damper model fitting is impro...

This paper introduces an open-source software package SCILAB, an alternative of MATLAB, which can be used for robust control design and analysis of a typical mass-spring-damper (MSD) system. Using the previously published ideas, this popular mechanical system is considered to provide another example of usefulness of SCILAB for advanced control design. Keywords—Robust Control, SCILAB, Mass-Sprin...

One of the most important structures in the ports is the wharf. The most common one is the pile-supported wharf. This type of wharf is consisted of a number of piles and one deck which placed on the piles. In addition to the conventional loads that this structure should withstand, in seismic areas, pile-supported wharfs should have the necessary capacity and strength against seismic excitations...