To address the contradiction between ride comfort and handling stability, a new vibration-absorbing wheel structure with time-delay feedback control was proposed by applying feedback-controlled dynamic vibration absorber to structure. Using H2 optimization particle swarm algorithm (PSO), design parameters of were obtained sprung mass acceleration (SMA), suspension deflection (SD) tire (DTD) as ...

Systems that exhibit flexible dynamics are susceptible to vibration caused by changes in the reference command and from external disturbances. Feedback control is an obvious choice to deal with these vibrations, but in many cases, it is insufficient or difficult to implement. Input shaping does not deal with vibration excited by external disturbances; however it has proven beneficial for reduci...

A conventional dynamic vibration absorber based on resonance effect can hardly satisfy the requirement for low-frequency and broadband control in actual engineering. Combined with passive nonlinear absorption strategy, this study employed characteristics of magnetic force, bistable structure to establish model main system a absorber. The motion states under different excitation conditions were ...

Significant structural vibration is an undesirable characteristic in helicopter flight that leads to structural fatigue, poor ride quality for passengers and high acoustic signature for the vehicle. Previous Individual Blade Control (IBC) techniques based on piezoelectric actuator schemes to reduce these effects have been hindered by electromechanical limitations of piezoelectric actuators. The...

In this article, the radiated noise by a shock-absorber is studied. This particular shock-absorber is used in a heavy-gauge shearing line in order to stop the cut steel sheets. Three steps are followed to evaluate the propagated sound in the surroundings; first of all, the plate vibration response is specified after the impact. Secondly, the edges of the plate are substituted by a set of the mo...