Fifth International Congress on Sound and Vibration December 15-18, 1997 Adelaide, South Australia Active Control of Nonlinear Vibration in a Flexible Cantilever Beam

نویسندگان

  • Thanh L-m Vu
  • Jie Pan
چکیده

The aim of this paper is firstly to address the consequences of the nonlinear interactions between higher order modes and the first order mode of a flexible cantilever beam. The tested cantilever beam exhibited numerous nonlinear phenomena that are commonly observed in many flexible structures. The experimental results have shown that active control of the nonlinear vibration in a flexible structure is effective. Secondly, the paper describes how the nonlinear vibration in the cantilever beam was cancelled using a digital feedback controller implemented in a dSpace TM Digital Signal Processing board. It has been demonstrated experimentally that the on-line feedback controller was capable of canceling the low frequency vibration generated in the flexible cantilever beam due to nonlinear interaction between the modes of the beam. This control scheme has considerable potential for canceling of nonlinear vibration in large structures such as aircraft, ships, etc. in order to reduce stress and fatigue of these structures.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Fifth International Congress on Sound and Vibration December 15-18, 1997 Adelaide, South Australia Genetic Algorithms for Active Vibration Control

This paper presents an investigation into the development of an active vibration control (AVC) system using genetic algorithms (GAs). During the last two decades, a substantial amount of research work has been carried out using GAs in various disciplines. Although GAs have gained popularity as parallel, global search techniques, their use in the area of active control is limited. This investiga...

متن کامل

Fifth International Congress on Sound and Vibration December 15-18, 1997 Adelaide, South Australia Power Flow Using Electro - Optic Holography, Part 1: Obtaining the Structural Phase

Electro-Optic Holography (EOH) is a laser based, fill field diagnostic technique used to measure micron sized deflections in statically displaced or vibrating structures. When applied to dynamically excited objects, EOH yields the time averaged displacement profile of the object surface. To obtain the structural power flow from EOH measurements, the structural phase must be extracted. This pape...

متن کامل

Fifth International Congress on Sound December 15 - 18 , 1997 Adelaide , South Australia and Vibration Active Double - Glazing : the Solution Is the Transducer

Looking at the increasing request concerning sound insulation in building, TechnoFirst@ and Saint Gobain Vitrage propose an active double-glazing window. In this partnership, TechnoFirst@ brings its experience in active control system. The product will be characterized by a global insulation never obtained. It deals with an acoustic treatment of the air volume. Modelisations have been done and ...

متن کامل

Fifth International Congress on Sound and Vibration December 15-18, 1997 Adelaide, South Australia Feedback Control of Noise in a Room

Active noise control technology is an attractive solution for attenuation of low frequency noise in enclosures. In terms of control strategies, feedforward control has often been used. While feedforward control has many advantages, its success relies on the availability of causal reference signals which have to be highly correlated to the noise to be cancelled. For some applications such as att...

متن کامل

Fifth International Congress on Sound and Vibration December 15-18, 1997 Adelaide, South Australia a Dydamic Estimation Method of Low-frequency Objective Sound in the Outdoor Measurement Contaminated by Wind Noise

This paper describes a new method estimating an objective low-frequency acoustic sound contaminated with wind noise in the outdoor measurement. It is a dynamic estimation technique employing a reference band pressure level (BPL) of a particular frequency range of the observation as the basis of the wind noise estimation. First, a conditional probability distribution function (c.d.f) of the wind...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1997