1 / 2019-07-15 17:45:12

Eigen frequency, frequency response, and transient response analysis of MEMS T-shape cantilever beam Piezoelectric Micro-Power generator about 1 KHz

eigenfrequency,Frequency Response,transient response analysis,MEMS,Piezoelectric micro power generator

MEMS T-shape cantilever beam Piezoelectric
Micro-Power generator (PMPG) harvests mechanical vibration
sources available in the surrounding ambient and converts it to
electric power necessary for small sensors and small electronics
devices via piezoelectric effects, Eliminating the needs for normal
battery replacement specially in remote areas, inside human
bodies such as artificial pacemaker and artificial cochlea
.COMSOL Multiphysics 5.4 is used to simulate PMPG,
Eigenfrequency is used to find the resonance frequencies for six
Modes of operation and its deflection shape, resonance frequency
analysis is used to find the device behavior in frequency rang cover
the six mode of operation without external mechanical load, and
transient analysis to study the PMPG vibration at first resonance
frequency during the first 20 cycle of time. PMPG vibrate updown
in z axis inn first resonance frequency where the neutral axis
located inside the proof mass , so no charge cancellation inside the
functioning piezoelectric materials occur , the first resonance
frequency shows also the maximum total displacement , maximum
electric potential across piezoelectric material , and maximum
electric energy density over the other resonance frequency mode
, the PMPG work probably during transient analysis once driven
by sinusoidal signal of frequency equal to first resonance
frequency . The PMPG able to work probably in the range of 1300-
1600 Hz where the maximum displacement, electric potential,
electric energy density occur at 1334 Hz.Eigen frequency, frequency response, transient
response analysis, MEMS, T-shape cantilever beam, Piezoelectric
Micro-Power generator