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Double-movement piezoelectric hinge-joint flexible beam vibration control device based on lead screw drive

A flexible beam and double-moving technology, applied in the field of flexible robots, can solve the problems of small driving displacement, inability to carry out large-scale displacement, deformation adjustment, etc., and achieve the effect of suppressing vibration

Inactive Publication Date: 2015-04-29
SOUTH CHINA UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The active control actuator is driven by a piezoelectric driver, which has the characteristics of fast response, wide frequency band, good linearity, and easy processing. It is especially suitable for vibration control applications of flexible structures such as spacecraft flexible beams, but its drive displacement is relatively large. Small, unable to make large-scale deformation adjustments

Method used

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  • Double-movement piezoelectric hinge-joint flexible beam vibration control device based on lead screw drive
  • Double-movement piezoelectric hinge-joint flexible beam vibration control device based on lead screw drive
  • Double-movement piezoelectric hinge-joint flexible beam vibration control device based on lead screw drive

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Experimental program
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Embodiment

[0024] like Figure 1-Figure 2 As shown, a dual-moving piezoelectric hinged flexible beam vibration control device driven by a screw rod includes a hinged flexible beam body part, a screw drive part, a bending vibration signal detection part, and a bending vibration drive control part;

[0025] The hinged flexible beam body part includes a first flexible beam 10, a second flexible beam 17 and a third flexible beam 18, the first flexible beam 10 is fixed by the first hinge 11 and the second flexible beam 16, and the second The flexible beam 16 is fixed with the third flexible beam 18 through the second hinge 17, the center of the second flexible beam 16 is fixed on the slider 6 by the mechanical clamping device 7, and the slider 6 moves along the sliding guide rail 5, so The sliding guide rail is installed on the base 4, and the hinged flexible beam body can move longitudinally along the sliding guide rail 5 along with the slider 6. The slider 6 is connected with the screw rod ...

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Abstract

The invention discloses a double-movement piezoelectric hinge-joint flexible beam vibration control device based on a lead screw drive. The device comprises a hinge-joint flexible beam body part, a lead screw transmission part, a bending vibration signal detection part and a bending vibration drive control part. A double-movement piezoelectric hinge-joint flexible beam structure is composed of a first flexible beam, a second flexible beam and a third flexible beam which are connected through hinges, wherein the first flexible beam and the third flexible beam are provided with free ends, and the center of the second flexible beam is fixedly connected to a moving sliding block; a piezoelectric sensor or an acceleration sensor detects bending vibration signals of the flexible beam structure; the lead screw drive driven based on a servo motor and a piezoelectric patch drive serve as actuators for vibration elimination. According to double-movement piezoelectric hinge-joint flexible beam vibration control device based on the lead screw drive, the rigid-soft coupling property of a system is better reflected, and the device can be used for simulating vibration test and control conditions in the orbital transfer process of spacecraft solar panels.

Description

technical field [0001] The invention relates to the field of flexible robots, in particular to a vibration control device for dual-moving piezoelectric hinged flexible beams driven by screw rods. Background technique [0002] Flexible structures are used in the aerospace field and industrial production. Compared with rigid structures, they have the advantages of light weight, low energy consumption, high efficiency, and flexible operation. However, the characteristics of flexible structures such as low rigidity and high flexibility will cause vibration problems and affect control accuracy. . In recent years, the active vibration control of flexible structures has become an important and challenging topic of widespread concern in the world today. [0003] The active control actuator is driven by a piezoelectric driver, which has the characteristics of fast response, wide frequency band, good linearity, and easy processing. It is especially suitable for vibration control appl...

Claims

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Application Information

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IPC IPC(8): G05D19/02
Inventor 邱志成许燕飞
Owner SOUTH CHINA UNIV OF TECH
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