Piezoelectricity actuator with large displacement and large impulse force
A piezoelectric actuator and high-thrust technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve small displacement, small thrust, complex structure, etc. Problems, achieve the effect of reducing volume and weight, reducing precision requirements, and reducing processing costs
Inactive Publication Date: 2010-05-12
XI AN JIAOTONG UNIV
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Problems solved by technology
However, the existing piezoelectric actuators generally have the disadvantages of complex structure, large displacement and small thrust or large thrust and small displacement, and cannot be closed-loop adaptive control
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[0011] The structural principle and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0012] refer to figure 1, the present invention includes a U-shaped base 19, an upper base 1 of the U-shaped base 19, and a lower base 11 of the U-shaped base 19. Each positioning steel block 7 is fixed on the U-shaped base 19 by two positioning bolts 6, and the upper bottom edge 1 of the U-shaped base 19 and the movable guide rail 5 are set as the motion track 4 of the actuator, and the motion track 4 is equipped with There are a first U-shaped part 13 and a second U-shaped part 2, the first U-shaped part 13 is fixed with a first piezoelectric stack 15, the second U-shaped part 2 is fixed with a second piezoelectric stack 3, and the second U-shaped part 2 is fixed with a second piezoelectric stack 3. A U-shaped part 13 and the second U-shaped part 2 are connected as a whole through bonding and fixing with th...
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The invention discloses a reciprocating piezoelectric actuator with variable step size, large displacement and high thrust, comprising a piezoelectric actuator mechanism which is designed based on thewriggle principle, a piezoelectric actuator movement track with one end fixed and the other end adjustable, a fine-tuning mechanism for the space between the two walls and the parallel degree of thetwo walls of the piezoelectric actuator movement track, a high-voltage linear amplification drive-control circuit of the piezoelectric actuator and a piezoelectric actuator drive-control circuit, wherein, the space between the two walls and the parallel degree of the two walls of the piezoelectric actuator can be fine-tuned by the movement of a pair of wedge-shaped sliders, so as to meet the needsof the precision positioning requirements for high thrust and large displacement. The piezoelectric actuator is characterized by high resolution ratio of displacement and high working frequency.
Description
technical field [0001] The invention relates to a piezoelectric actuator, in particular to a reciprocating variable step length piezoelectric actuator with large displacement and large thrust based on the principle of peristalsis. Background technique [0002] Precision actuators are important devices in the industrial field, and have extensive demands in aerospace, machinery manufacturing and other fields. Piezoelectric actuator is a kind of micro-displacement device made by the inverse piezoelectric effect of piezoelectric ceramics. In theory, it has the advantages of small size, large thrust, high precision, high displacement resolution and fast frequency response. In recent years, it has received certain attention. develop. However, the existing piezoelectric actuators generally have the disadvantages of complex structure, large displacement and small thrust or large thrust and small displacement, and cannot be closed-loop adaptive control. Contents of the invention ...
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IPC IPC(8): H02N2/00
Inventor 张治君徐明龙张希农卢天健陈振茂
Owner XI AN JIAOTONG UNIV