Brake squeal is one of the main issues regarding noise, vibration and harshness (NVH) in the development of modern
passenger cars. It has become widely accepted by engineers and researches working in the field that squeal is due to
friction-induced, self-excited vibrations of the brake system. The noise-free configuration of the brake system loses its
stability and the system then starts oscillating with audible frequencies in a limit cycle, characterized by vibrational
amplitudes of several micrometers. A broad overview of brake squeal is given in [1] and a more general review of friction
induced vibrations can be found in [2–4].