A Novel Approach for Brake Squeal Control Using Shunted Piezoceramics

Despite significant efforts, the phenomenon of brake squeal still remains unpredictable. Recently, piezoelectric shunt damping is proposed as an alternative approach to suppress squealing. It features a piezoceramics which is embedded into the brake model. At the electrodes an electrical network is connected with the aim to generate a dynamical behavior of the piezoceramics which counteracts the mechanical vibration.

In this paper, resonant networks featuring a negative capacitance and a switching shunt are discussed separately. An electromechanical multibody system of the brake with shunted piezoceramic is presented and stability analyses are carried out. The results are verified on a test rig with a modified brake prototype.