New high performance-low cost monolithic bimorph piezoelectric actuators for applications requiring large displacements with significant forces

Colla, Enrico; Thiele, Erik S.; Damjanović, Dragan; Setter, N.

doi:10.1109/isaf.2000.941563

Cited by 4 publications

(2 citation statements)

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“…A few promising developments in this respect include metal-ceramic flextensional actuators (oval-shell [2], Moonie [3] and Cymbal actuators [4], etc), internally stressed dome-shaped actuators (e.g. RAINBOW [5], THUNDER [6], and PZT-ceramics bending actuators) and diskbenders [7].…”

Section: Introductionmentioning

confidence: 99%

X-pod: a small footprint multi-legged piezoelectric single-crystal unimorph-based actuator concept

Shukla¹,

Lim²,

Gandhi³

2012

Smart Mater. Struct.

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Multi-legged piezoelectric single-crystal actuators with small footprints using an X-pod approach, namely, the Tripod and Tetrapod, have been conceptualized, each leg being a unimorph driven by Pb(Zn1/3Nb2/3)O3–(6–7)%PbTiO3 (PZN–(6–7)%PT) single crystals of [110]L × [001]T cut. Both finite-element analysis and experimental investigations are carried out to evaluate the performance of the Tripod and Tetrapod actuators. When operated at 0.57 kV mm−1, both actuators exhibit an axial displacement of nearly 60 µm. Blocking forces of about 10 N and 14 N are observed for the Tripod and the Tetrapod, respectively. The blocking forces are roughly doubled if the perfectly clamped condition is imposed for the legs at the pedestal end while the axial displacement is lowered marginally by 12%. In addition to small footprints, other attractive features of the actuators include greater flexibility to modify the leg geometry and their inclination to suit the application.

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Section: Introductionmentioning

confidence: 99%

X-pod: a small footprint multi-legged piezoelectric single-crystal unimorph-based actuator concept

Shukla¹,

Lim²,

Gandhi³

2012

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…3,4 Consequently, bending actuators utilizing a monomorph structure, i.e., without a bonding layer, have been developed. 5,6 In some cases, such actuators also exploit mechanical pre-stress to enhance the piezoelectric d 31 coefficient which is mainly responsible for the axial displacement in the benders. [7][8][9][10] In practical applications, however, the functionality, size and overall cost play an important role.…”

Section: Introductionmentioning

confidence: 99%