Myoid piezoelectric fiber composite material driver
A piezoelectric fiber and composite material technology, applied in the field of intelligent structure active control devices or new drivers, which can solve problems such as limited driving force
Inactive Publication Date: 2009-11-04
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
However, a single piezoelectric ceramic fiber itself is relatively thin, and the output driving force is limited, which cannot meet the requirements of practical applications.
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[0012] Below in conjunction with accompanying drawing, the present invention is described in further detail:
[0013] The present invention arranges piezoelectric fibers with conductive cores (carbon cores or metal cores) in parallel, just like the arrangement of animal muscle fibers in muscles. Each piezoelectric fiber is pre-processed, that is, its outer electrode is removed at its end (assumed to be unified as the right end), and the insulating piezoelectric material is left. Remove the piezoelectric material from the rightmost end of this part of the piezoelectric material to expose a A small piece of core material, arrange the pre-processed piezoelectric fibers in parallel, and use two kinds of glue to bond them together to form a whole structure, such as figure 2 shown. One is conductive glue, and the other is insulating glue. There are four regions distributed from left to right along the fiber length direction, which are the first insulating region, the first conduct...
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The invention relates to a myoid piezoelectric fiber composite material driver, which belongs to the technical field of active control devices with intelligent structures or novel drivers. The driver is characterized by being formed in the following mode: a plurality of single piezoelectric fibers form a fiber bundle by bonding a conductive adhesive and an insulation paste; the single piezoelectric fibers consist of conductive cores (1), piezoelectric ceramics (3) and surface electrodes (2), wherein certain same ends of all the single piezoelectric fibers are provided with conductive core bare sections; middle sections of the surface electrodes of adjacent single piezoelectric fibers are adhered by the conductive adhesive (5); the conductive core bare sections of the adjacent single piezoelectric fibers are adhered by the conductive adhesive; and the head sections and the tail sections of the surface electrodes of the adjacent single piezoelectric fibers form insulating protective layers between the surface electrodes and conductive cores through the insulation paste (4). The myoid piezoelectric fiber composite material driver can generate large displacement and output force at small exciting voltage.
Description
technical field [0001] The invention relates to a muscle-like piezoelectric fiber composite material driver, which belongs to the technical field of intelligent structure active control devices or novel drivers. Background technique [0002] Piezoelectric actuators based on the inverse piezoelectric effect of piezoelectric materials are widely used in optical precision machining engineering, microelectronics manufacturing technology, aerospace technology, ultra-precision machinery manufacturing, ultra-precision micro-robot operation, seismic measurement, bioengineering, medicine and genetic engineering. The field of technology is gradually being well applied. Domestic research on piezoelectric drive and control technology has also developed rapidly. Piezoelectric actuators have the advantages of small size, good linearity, convenient control, high displacement resolution, good frequency response, low energy consumption, and no noise. However, there are still many problems ...
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IPC IPC(8): H02N2/00H01L41/18H10N30/85
Inventor 陈仁文雷娴刘祥建
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS