Active Vibration Control for the Mitigation of Wheel Squeal Noise Based on a Fuzzy Self-Tuning PID Controller

Table 4

Piezoelectric sensor properties [41].

Parameter	Symbol	Unit	Value
Maximum allowable voltage	Vall	V	1000
Relative permittivity		—	1700
Piezoelectric constant	d31		190
Compliance matrix			18.8
		10e − 12 m^2/N×	16.4
		10e − 12 m^2/N×	−5.74
		10e − 12 m^2/N×	−7.22
		10e − 12 m^2/N×	47.5
		10e − 12 m^2/N×	44.3
		10e − 12 m^2/N×	44.3