Broadband versus stepped sine FRF measurements

نویسندگان

  • Johan Schoukens
  • Rik Pintelon
  • Yves Rolain
چکیده

In this paper, the required measurement time to measure a transfer function with a specified accuracy is analyzed. The waiting time that is needed to balance the transient induced errors against the noise errors is calculated. This allows one to decide under what conditions broad-band measurements are faster than stepped sine measurements.

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

An FPGA-based frequency response analyzer for multisine and stepped sine measurements on stationary and time-varying impedance

We report the development of a field programmable gate array (FPGA) based frequency response analyzer (FRA) for impedance frequency response function (FRF) measurements using periodic excitations, i.e. sine waves and multisines. The stepped sine measurement uses two dedicated hardware-built digital embedded multiplier blocks to extract the phase and quadrature components of the output signal. T...

متن کامل

Broadband Vibration Measurements Using a Continuously Scanning Laser Vibrometer

In this article we will apply the continuously scanning vibrometer measurement principle introduced in literature for stepped sine measurementsto broadband excitations. Special attention will be given to the errors which are introduced in the procedure. Also, a method will be proposed to estimate the complexity of the vibration patterns. Different scanning signals to cover the measured area of ...

متن کامل

Lateralization of Huggins pitch.

The Huggins pitch is a sensation of pitch generated from a broadband noise having a narrowband boundary region where the interaural phase difference varies rapidly as a function of frequency. Models of binaural hearing predict that the pitch image should be well lateralized. A direct psychophysical experimental method was used to estimate the lateral positions of Huggins pitch images with two d...

متن کامل

Stepped Spillway Performance: Study of the Pressure and Turbulent Kinetic Energy versus Discharge and Slope

In the present study, flow over flat and pooled stepped spillways was simulated three dimensionally. The VOF method and k- ε (RNG) turbulent model was used to simulate the flow over the stepped spillway. The results indicated that the numerical model was acceptably capable of simulating the flow over the pooled and flat stepped spillways for different discharges. Following that, the effect of d...

متن کامل

Improved FRF estimators for MIMO Sine Sweep data

The dynamic identification of large aerospace structures like satellites, launcher components or aircraft prototypes, requires a great experimental effort in order to assure high quality test results. At the same time, because of the high development costs, a reduction of the test time is needed. In this paper, a test strategy capable to reduce the overall time required to perform dynamic tests...

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:
  • IEEE Trans. Instrumentation and Measurement

دوره 49  شماره 

صفحات  -

تاریخ انتشار 2000