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Suppression of Brake Squeal Using Shunted Piezoceramics

[+] Author Affiliations
Marcus Neubauer

University of Hannover, Hannover, Germany

Robert Oleskiewicz

Koszalin University of Technology, Koszalin, Poland

Paper No. ESDA2006-95540, pp. 403-412; 10 pages
  • ASME 8th Biennial Conference on Engineering Systems Design and Analysis
  • Volume 3: Dynamic Systems and Controls, Symposium on Design and Analysis of Advanced Structures, and Tribology
  • Torino, Italy, July 4–7, 2006
  • ISBN: 0-7918-4250-9 | eISBN: 0-7918-3779-3
  • Copyright © 2006 by ASME


Due to increased interest in comfort features, considerable effort is spent by brake manufacturers in order to suppress brake squeal. This process can be shortened by eliminating the remaining squealing with shunted piezoceramics that are embedded into the brake system. The piezoceramic offers the unique ability to convert mechanical energy into electrical energy and vice versa. The damping performance is determined by the connected shunt. This paper presents a multibody system of a brake, which is capable to reproduce the important features of brake squeal. It includes the dynamics of a piezoceramic that is shunted with a passive LR shunt or a negative capacitance LRC shunt. Analytical stability analysis are carried out to obtain optimal shunt parameters. The performance increase with a negative capacitance is studied in detail. The simulations are validated with measurements on an automotive disc brake.

Copyright © 2006 by ASME



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