Filtered-X LMS versus repetitive control for active structural acoustic control

نویسندگان

  • Bert Stallaert
  • Gregory Pinte
  • Steven Devos
  • Wim Symens
  • Jan Swevers
  • Paul Sas
چکیده

This presentation investigates Active Structural Acoustic Control (ASAC) of rotating machinery with high modal density, by placing actuators as close as possible to the noise source. For this purpose, an experimental set-up has been built, as discussed in [3]. The set-up consists of a shaft supported by two bearings, of which one is made “active” by mounting piezo-actuators around it, to influence the vibration transfer in the bearings. Sound is radiated by a flexible panel mounted on the set-up.

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

Filtered-X LMS vs repetitive control for active structural acoustic control of periodic disturbances

This paper presents a comparison of repetitive control and narrowband filtered-X LMS feedforward control, both applicable in the field of active structural acoustic control (ASAC) and active noise control (ANC) of periodic disturbances. This can be useful for example in rotating machinery, where the disturbance is often determined by the rotational speed. A frequency domain relation between the...

متن کامل

Constraint filtered-x and filtered-u least-mean-square algorithms for the active control of noise in ducts

In the active control of noise in ducts, it is common practice to locate an error microphone far from the control source to avoid the near-field effects by evanescent waves. Such a distance between the control source and the error microphone makes a certain level of time delay inevitable and, hence, may yield undesirable ffects on the convergence properties of control algorithms such as filtere...

متن کامل

Fifth International Congress on Sound and Vibration

This paper presents a simple adaptive algorithm based on the adaptive notch two-taps filter [1] and the filtered-X LMS algorithm [2], to be used in active noise control applications, The system consists of two adaptive algorithms working together. One algorithm estimates on-line the error path transfer fi.mction as proposed in [3] and the other cancels a i%equency narrowband of the residual sig...

متن کامل

A Filtered-X LMS Algorithm for Sinusoidal Reference Signals - Effects of Frequency Mismatch

The objective of this letter is to analyze the effects of frequency mismatch for an adaptive algorithm that becomes the Filtered-X LMS algorithm when the reference signals are purely sinusoidal. The Filtered-X LMS algorithm is often used for active control of acoustic noise. For the case of sinusoidal noise sources, if there is a deviation between the frequency used in the adaptive algorithm an...

متن کامل

Multichannel active noise control algorithms using inverse filters

1.0 Introduction For active noise control (ANC) systems, a common approach is to use adaptive FIR filters trained with the filtered-x LMS algorithm [1], for both feedforward systems and Internal Model Control (IMC) feedback systems, in monochannel or multichannel systems. Variations of the algorithm sometimes called the modified filtered-x LMS algorithm have been published [2], which can achiev...

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 2007