Driving device for active vibration suppressing of precise platform

A driving device, active technology, applied in vibration suppression adjustment, non-rotation vibration suppression, material selection for piezoelectric devices or electrostrictive devices, etc., can solve problems such as low frequency external vibration interference

Pending Publication Date: 2020-07-10
WUHAN UNIV OF TECH
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above defects or improvement needs of the prior art, and to solve the low-frequency external vibration interference problem of the existing precision platform, the present invention provides an active vibration suppression drive device for the precision platform, in which piezoelectric ceramic fiber composite materials and piezoelectric The ceramic stack device not only ensures the stability of the precision platform, but also realizes the active vibration suppression of the precision platform under the working modes of tension, shear and torsion

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Driving device for active vibration suppressing of precise platform
  • Driving device for active vibration suppressing of precise platform
  • Driving device for active vibration suppressing of precise platform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1: Preparation of a precision platform active vibration suppression driving device

[0040] Adopt CN105405964B embodiment 1 to obtain PZT-5H base MFC structure piezoelectric fiber composite material to prepare MFC device, piezoelectric ceramic stack 4, 6 selects PZT-5H equally, according to figure 1 The path vibration suppression driver module 8 and the stack vibration suppression driver module 9 are set, according to image 3 Set the stacking form of the piezoelectric ceramic stack, connect the MFC device, the piezoelectric ceramic stack device with the card collector, controller, and drive power supply, and the acquisition card, drive power supply, and controller are connected to the XPC target through the network cable. The real-time control system is connected to form a precision platform active vibration suppression drive device.

Embodiment 2

[0041] Example 2: Vibration test experiment of active vibration suppression driving device for precision platform:

[0042] The device of Example 1 was attached to the precision vibration platform by 101 glue. When the vibration platform is applied at 100m / s 2 When accelerating, the overall amplitude of the vibration table is 1.55um. The device in Example 1 was energized with 100V to suppress vibration, and the PID control parameters of the controller were adjusted to the optimum. At this time, the overall amplitude of the vibration table dropped to 0.95um, and the amplitude dropped by 38.7%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a driving device based on a piezoelectric material for active vibration suppressing. A macro fiber composite (MFC) device prepared from piezoelectric ceramic fibers is adoptedto be fixed to a vibration propagation path of a platform, and external vibration waves are suppressed from the source of sound wave vibration; and piezoelectric composite devices prepared in a piezoelectric ceramic stacking mode are adopted to be fixed to bolts connecting the platform with a base support and the like, the characteristics of low frequency, high bandwidth, large stress and the likeare achieved, and 5-2000 Hz external low-frequency vibration signals can be suppressed.

Description

technical field [0001] The invention relates to a drive device for active vibration suppression of precision platforms in the fields of aerospace, precision instruments, etc., in particular to an active vibration suppression drive device based on piezoelectric materials. Background technique [0002] With the development of aerospace technology, precision instruments and other fields, higher requirements are put forward for the stability of precision platforms. Therefore, the problem of multi-peak resonance caused by external interference on sensitive components of key modules in precision platforms has attracted common attention in the field. Generally, environmental vibrations randomly vibrate in the low-frequency range of 5-2000Hz, but the existing passive vibration isolation technology has a narrow response frequency band and poor low-frequency adaptability, and cannot solve the resonance problem caused by low-frequency random vibrations. [0003] US5844664 provides an a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityApplications(China)
IPC IPC(8): F16F15/03H01L41/08H01L41/083H01L41/09H01L41/18H01L41/187H10N30/00H10N30/20H10N30/50H10N30/85H10N30/853
CPCF16F15/005H10N30/50H10N30/20H10N30/852H10N30/853H10N30/702
Inventor周静沈杰周晶晶陈文
OwnerWUHAN UNIV OF TECH