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Active vibration inhibition execution mechanism of flexible structure

A flexible structure and actuator technology, applied in the directions of space navigation equipment, tools, transportation and packaging, can solve the problems of large space size, complex structure, unsuitable for distributed active vibration control, etc., achieve small space size, enlarged output The effect of thrust, reduced output requirements

Active Publication Date: 2019-05-17
SHANGHAI AEROSPACE CONTROL TECH INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its complex structure and large space size are not suitable for distributed active vibration control of large structures.

Method used

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  • Active vibration inhibition execution mechanism of flexible structure
  • Active vibration inhibition execution mechanism of flexible structure
  • Active vibration inhibition execution mechanism of flexible structure

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Experimental program
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Embodiment Construction

[0027] The specific implementation and functional principles of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] like figure 1 As shown, the actuator is composed of an upper platform, a lower platform, a linear drive, a universal joint, a wedge-shaped slider, a reversing support block, and supporting guide rails. Using the transmission principle of a wedge-shaped mechanism, the wedge-shaped slider The linear motion in the x direction is converted into the linear motion of the reversing support block in the z direction perpendicular to the platform plane, so as to realize the two-degree-of-freedom relative rotation between the upper and lower platforms and the control torque output.

[0029] in:

[0030] platform ( figure 1 middle number 1), lower platform ( figure 1 Middle number 2) is respectively connected with the two substructures of the flexible structure, and the upper and lower platforms are conne...

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Abstract

The invention discloses an active vibration inhibition execution mechanism of a flexible structure. The execution mechanism mainly consists of components such as an upper platform, a lower platform, astraight line drive, a universal joint, a wedged sliding block, a reversing support block and a guide track in match. By virtue of transmission principles of a wedged mechanism, straight line movement of the wedged sliding block is converted into movement of the reversing support block in a vertical direction, and upper and lower platforms are driven to achieve relative rotation and moment outputof two-degree freedom. According to the execution mechanism, the upper and lower platforms are connected with a flexible structure, a small space is occupied in a structure connection direction, theexecution mechanism is applicable to a sub-structure connection part of a large-size unfoldable flexible structure in a limited mounting space, active vibration control on the structure is carried outby adjusting control structures of the straight line type drive, in addition, self locking can be achieved and stabilization of the execution mechanism is maintained under the action of external loads, and the execution mechanism has the advantages of being simple in principle, large in moment output capability, easy to achieve, and the like.

Description

technical field [0001] The invention relates to structural design and vibration control technology of flexible structures, and is an active vibration suppression actuator used for connection of large flexible structures, especially suitable for large flexible structures with single-direction compact space installation requirements, angle adjustment and vibration control requirements. Structural connections. Background technique [0002] The large-scale and lightweight requirements of space structures have led to the extensive use of flexible structures, and flexible structures are prone to vibration under the action of external loads, thermal alternating environments and other factors, and are not easy to quickly decay, which seriously affects the performance of the overall structure. In order to solve this problem, researchers at home and abroad have proposed many vibration control methods, which can be roughly divided into two categories: passive vibration control and acti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G4/00
Inventor 刘付成黄庭轩孙禄君朱东方黄静
Owner SHANGHAI AEROSPACE CONTROL TECH INST
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