title: A two-layer linear piezoelectric micromotor.
abstract: A first bending (B1) mode two-layer piezoelectric ultrasonic linear micromotor has been developed for microoptics driving applications. The piezo-vibrator of the micromotor was composed of two small Pb(Zr,Ti)O3 (PZT-5) plates, with overall dimensions and mass of only 2.0 × 2.0 × 5.0 mm(3) and 0.2 g, respectively. The proposed micromotor could operate either in single-phase voltage (standing wave) mode or two-phase voltage (traveling wave) mode to drive a slider via friction force to provide bidirectional linear motion. A large thrust of up to 0.30 N, which corresponds to a high unit volume direct driving force of 15 mN/mm(3), and a linear movement velocity of up to 230 mm/s were obtained under an applied voltage of 80 Vpp at the B1 mode resonance frequency of 174 kHz.
authors.forename: Xiaotian
authors.initials: X
authors.lastname: Li
authors.forename: Penghong
authors.initials: P
authors.lastname: Ci
authors.forename: Guoxi
authors.initials: G
authors.lastname: Liu
authors.forename: Shuxiang
authors.initials: S
authors.lastname: Dong