Study on stability of self-synchronous far-resonant vibrating system of two eccentric rotors considering material impact

2021 ◽  
Author(s):  
Yongjun Hou ◽  
Guang Xiong ◽  
Pan Fang ◽  
Yuwen Wang ◽  
Mingjun Du
Keyword(s):  
Vibrating System

An application of stochastic resonance for energy harvesting in a bistable vibrating system

2014 ◽  
Vol 333 (12) ◽  
pp. 2568-2587 ◽  
Author(s):  
Rencheng Zheng ◽  
Kimihiko Nakano ◽  
Honggang Hu ◽  
Dongxu Su ◽  
Matthew P. Cartmell
Keyword(s):  
Energy Harvesting ◽  
Stochastic Resonance ◽  
Vibrating System

On the Fundamental Modes of a Vibrating System

2011 ◽  
pp. 186-186
Author(s):  
John William Strutt
Keyword(s):  
Vibrating System

On the Theory of the Acceleration Damper

1956 ◽  
Vol 23 (3) ◽  
pp. 373-378
Author(s):  
Carl Grubin
Keyword(s):  
Mechanical System ◽  
Momentum Transfer ◽  
Driving Force ◽  
Direct Problem ◽  
Mechanical Energy ◽  
Single Degree Of Freedom ◽  
Mass Particle ◽  
Single Degree ◽  
Vibrating System ◽  
At Resonance

Abstract The acceleration damper reduces the vibration of a mechanical system through momentum transfer by collision and conversion of mechanical energy into heat. A typical unit consists of a mass particle moving in a container fixed to the primary vibrating system. The direct problem is to determine the motion of a single-degree-of-freedom system with a damper, when the driving force is simple harmonic. The inverse is to determine the characteristics of a damper for reducing the vibration of the same system to a prescribed value. Numerical results indicate that the damper is most effective at resonance.

Nonstationary Robust Positioning Control of Flexible Structures

1995 ◽  
Author(s):  
Susumu Hara ◽  
Kazuo Yoshida
Keyword(s):  
Vibration Control ◽  
Flexible Structures ◽  
Synthesis Method ◽  
Riccati Equations ◽  
Time Varying ◽  
Criterion Function ◽  
Positioning Control ◽  
Vibrating System ◽  
Smooth Change ◽  
Time Invariant

Abstract For positioning control of such vibrating system as flexible structures, it is important to reduce vibration. In the problem, influences of such uncertainties as variations of parameters of controllers possess nonstationary characteristics. This paper presents an integrated synthesis method of both motion and vibration controller maintaining the robustness of the control by using a time-varying criterion function. In this method, a smooth change from H2 positioning control to H vibration control is realized by solving time-varying Riccati equations in stead of time-invariant Riccati equations. This method is applied to a positioning problem of flexible tower-like structure. In comparison with the former methods proposed by the authors, the usefulness of the method is verified theoretically and experimentally.

Energy Harvesting Aspects of Irregular Vibrating Forces Acting on Piezoelectric Devices

2015 ◽  
pp. 143-158
Author(s):  
Alessandro Massaro
Keyword(s):  
Energy Harvesting ◽  
Piezoelectric Materials ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Output Current ◽  
Vibrating System ◽  
External Forces ◽  
Piezoelectric Devices ◽  
Three Dimensional Space

After a brief introduction of piezoelectric materials, this chapter focuses on the characterization of vibrating freestanding piezoelectric AlN devices forced by different external forces acting simultaneously. The analyzed vibrating forces are applied mainly to piezoelectric freestanding structures stimulated by irregular vibration phenomena. Particular kinds of theoretical noise signals are commented. The goal of the chapter is to analyze the effect of the noise in order to model the chaotic vibrating system and to predict the output current signals. Moreover, the author also shows a possible alternative way to detect different vibrating force directions in the three dimensional space by means of curved piezoelectric layouts.

Sign in / Sign up

Export Citation Format

Share Document