Skip to main content

Table 1 Performance measures of stators

From: Characterization of bulk piezoelectric element-based ultrasonic motors

Stator type Quality factor \(Q_m\) Coupling coefficient k % i-v ratio \(A_{iv}\) As/m
Cubic bulk 1524 6.52 0.0130
Cylindrical bulk 1134 6.03 0.0145
Cubic bronze 465 7.63 0.0201