Intelligent torsion control lever based on tile shape piezo-electric sheets

A piezoelectric sheet and control rod technology, applied in the field of torsional vibration suppression control devices, can solve the problems of general control characteristics, complex drive structure, large volume, etc., and achieve the effect of simple and compact structure, high precision vibration suppression requirements, and high precision

Inactive Publication Date: 2003-10-15
ZHEJIANG UNIV
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Problems solved by technology

However, most of the drivers mentioned above have the characteristics of complex structure, large volume, specific requirements for installation, and general control characteristics.

Method used

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  • Intelligent torsion control lever based on tile shape piezo-electric sheets
  • Intelligent torsion control lever based on tile shape piezo-electric sheets
  • Intelligent torsion control lever based on tile shape piezo-electric sheets

Examples

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Embodiment Construction

[0018] Such as figure 1 As shown, it includes: a hollow round rod 4, a piezoelectric sensor 3, a piezoelectric torsion driver 2, two connecting blocks 1 and 5 respectively installed at the two ends of the hollow round rod 4; A piezoelectric torsion driver 2 and a piezoelectric sensor 3 are sequentially installed in the direction of the hollow rod on the outer surface of the part.

[0019] The present invention adopts the thickness shear vibration polarization mode, that is, the electromechanical coupling coefficient is K 15 (Piezoelectric constant d 15 ) piezoelectric material as a driver, and an intelligent torsional vibration control rod based on a tile-shaped piezoelectric sheet is designed. Such as figure 1 As shown, the piezoelectric torsion driver 2 and the piezoelectric sensor 3 are directly pasted on the outer surface of the hollow round rod 4 through an adhesive, and the pasting position of the piezoelectric torsion driver 2 is as close as possible to the end of th...

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PUM

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Abstract

The present invention is one intelligent torsional oscillation controlling rod based on tile-shaped piezoelectric sheet. On the two ends of the hollow circular rod, connecting blocks are mounted forconnection with other members, and in one end of the rod, there are piezoelectric torsional driver and piezoelectric sensor mounted successively. When one end produces torsional deformation or torsional oscillation relatively to the other end, the piezoelectric sensor detects the signal and the signal is fed to the piezoelectric torsional driver via a reverse amplifier, so that the piezoelectrictorsional driver produces one reverse torsional moment to inhibit the deformation or oscillation. The rod has integrated sensing and driving control functions, and has the advantages of compact structure, good control characteristic, low power consumption, high inhibition effect, etc. and may be used in space robot and other places.

Description

technical field [0001] The invention relates to a torsional vibration suppression control device, which is an intelligent torsional vibration control rod based on tile-shaped piezoelectric sheets. Background technique [0002] Under the action of complex excitation force, many components tend to produce axial stretching vibration, bending vibration, and even torsional vibration. Because the performance of torsional vibration is not intuitive, it often does not attract people's attention. However, with the increase of the output power of various equipment, the volume of the main components of the equipment increases, and the stiffness drops sharply. Especially in the field of aerospace, in order to reduce the cost of launching, it is required to achieve light weight, low stiffness and flexible design of aerospace structures. The impact of torsional vibration on these components is becoming more and more obvious, and in some cases even serious hazards...

Claims

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Application Information

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IPC IPC(8): F16F15/03
Inventor 魏燕定吕永桂
Owner ZHEJIANG UNIV
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