Artículos de revistas
Analysis of linearity and frequency response of a novel piezoelectric flextensional actuator using a homodyne interferometer and the J(1)-J(4) method
Fecha
2007-06-01Registro en:
IEEE Transactions on Instrumentation and Measurement. Piscataway: IEEE-Inst Electrical Electronics Engineers Inc., v. 56, n. 3, p. 954-961, 2007.
0018-9456
10.1109/TIM.2007.894173
WOS:000246590800036
6405339510883203
2883440351895167
0000-0003-4201-5617
0000-0001-6320-755X
Autor
Ctr Univ Rio Preto
Ctr Univ Catolico
Ctr Univ Lins
Inst Pesquisas Tecnol
Universidade Estadual Paulista (Unesp)
Universidade de São Paulo (USP)
Institución
Resumen
Piezoelectric transducers are widely used in high-resolution positioning systems. This paper reports the experimental analysis of a novel piezoelectric flextensional actuator (PFA), which is designed by using the topology-optimization method through a low-cost homodyne Michelson interferometer. By applying the J(1) - J(4) method for signal demodulation, which provides a linear and direct measurement of dynamic optical phase shift independent of fading, the nanometric displacements of the PFA were determined. Linearity and frequency response of the PFA were evaluated up to 50 kHz. PFA calibration factor and amplification rate were determined for the PFA operating in the quasi-static regime. To confirm the observed frequencies of resonance, an impedance analyzer is also utilized to measure the magnitude and phase of the PFA admittance.