Feasibility of controlling speed-dependent low-frequency brake vibration amplification by modulating actuation pressure


Şen O. T. , Dreyer J. T. , Singh R.

JOURNAL OF SOUND AND VIBRATION, vol.333, no.24, pp.6332-6348, 2014 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 333 Issue: 24
  • Publication Date: 2014
  • Doi Number: 10.1016/j.jsv.2014.07.022
  • Title of Journal : JOURNAL OF SOUND AND VIBRATION
  • Page Numbers: pp.6332-6348

Abstract

In this article, a feasibility study of controlling the low frequency torque response of a disc brake system with modulated actuation pressure (in the open loop mode) is conducted. First, a quasi-linear model of the torsional system is introduced, and analytical solutions are proposed to incorporate the modulation effect. Tractable expressions for three different modulation schemes are obtained, and conditions that would lead to a reduction in the oscillatory amplitudes are identified. Second, these conditions are evaluated with a numerical model of the torsional system with clearance nonlinearity, and analytical solutions are verified in terms of the trends observed. Finally, a laboratory experiment with a solenoid valve is built to modulate actuation pressure with a constant duty cycle, and time-frequency domain data are acquired. Measurements are utilized to assess analytical observations, and all methods show that the speed-dependent brake torque amplitudes can be altered with an appropriate modulation of actuation pressure. (C) 2014 Elsevier Ltd. All rights reserved.