Publication detail

Mechanical Shock Shape Calculation from Estimated Accelerometer Parameters

KUNZ, J. BENEŠ, P.

Original Title

Mechanical Shock Shape Calculation from Estimated Accelerometer Parameters

Type

conference paper

Language

English

Original Abstract

Mechanical shocks are often measured by piezoelectric accelerometers. This sensor type causes shock shape changes because it is essentially an under-damped second order dynamic system, therefore it filters sharp edges of shocks and adds damped oscillations. Because of a signal change occurring on a sensor, it is hard to calculate correctly a shock parameters or a shock response spectrum. Yet both are essential parameters for device testing. Extracting a shock shape from measured data is very complicated due to a signal noise and inaccuracies in sensor dynamic parameters. In this paper, we present a new method of calculation of an original shock shape and of a sensor dynamic parameters when a mechanical shock is measured by two accelerometers with different frequency spectrum. New method was tested on simulated data and verified during experiment which provided overall accuracy up to 5 %.

Keywords

mechanical shock, piezoelectric accelerometer, shock response spectrum, parameter estimation

Authors

KUNZ, J.; BENEŠ, P.

Released

27. 7. 2017

Location

London

ISBN

978-1-906913-27-4

Book

Proceedings of the 24th International Congress on Sound and Vibration

ISBN

2329-3675

Periodical

International Journal of Acoustic and Vibration

State

United States of America

Pages from

1

Pages to

6

Pages count

6

BibTex

@inproceedings{BUT138057,
  author="Jan {Kunz} and Petr {Beneš}",
  title="Mechanical Shock Shape Calculation from Estimated Accelerometer Parameters",
  booktitle="Proceedings of the 24th International Congress on Sound and Vibration",
  year="2017",
  journal="International Journal of Acoustic and Vibration",
  pages="1--6",
  address="London",
  isbn="978-1-906913-27-4",
  issn="2329-3675"
}