Abstract
In an earlier SPIE paper, we described the development of a strain actuator consisting of a thin, co-fired, multilayered, PZT stack mounted within a titanium frame. The frame concept was designed to facilitate integration of the piezoceramic stack into a composite material during the fabrication process. The frame preloads the stack in compression, protects it during material fabrication and most importantly, provides an efficient shear transfer path to the surrounding host material. Because the piezoceramic stack power requirements are quite high, a special amplifier was also designed to meet the high current and voltage requirements. In this paper we focus on assessing the performance of the framed stack actuator for a variety of loading conditions. The calibration procedure uses a specially designed apparatus which loads the framed stack with a variety of impedances ranging from very compliant to very stiff. The mechanical power generated by the stack is measured directly in terms of the force transmitted to these loads along with their displacement. Electrical power is measured directly in terms of electrical current and voltage and is also computed in terms of the electrical admittance of the stack. Results show that the actuator is most efficient when a nearly matched impedance condition exists between the framed stack and its corresponding load.
Original language | English (US) |
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Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
Editors | C.Robert Crowe |
Pages | 443-454 |
Number of pages | 12 |
Volume | 2721 |
State | Published - 1996 |
Event | Smart Structures and Materials 1996: Industrial and Commercial Applications of Smart Structures Technologies - San Diego, CA, USA Duration: Feb 27 1996 → Feb 29 1996 |
Other
Other | Smart Structures and Materials 1996: Industrial and Commercial Applications of Smart Structures Technologies |
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City | San Diego, CA, USA |
Period | 2/27/96 → 2/29/96 |
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
- Condensed Matter Physics