An intelligent support rod with high frequency response infinite stiffness based on semi-active control method

Abstract

The invention discloses a high-frequency-response, infinite-stiffness intelligent support rod based on a semi-active control method, comprising a common support (1), a series rod (2) made of electrostrictive material, and pasted on the common support rod The upper strain measurement sensor group (3) of the component (1), a high-integration analog controller (4), and a miniature thermostatic control box (5) for installing the high-integration analog controller. The invention uses a simulated closed-loop loop to realize the semi-active control of the support rod. By realizing the high-frequency response and zero deformation of the rod as a whole, the infinite stiffness characteristics of the rod are formed, so that the stiffness characteristics of the rigid member are no longer subject to the quality of the rod. And it is easy to integrate and does not depend on the host controller.

Description

technical field [0001] The invention belongs to the field of intelligent structure and control, and particularly relates to a high-frequency response support rod based on a semi-active control method. Background technique [0002] Support rod is the most common component form in various fields, and is a common component of various entities in civil engineering, optical engineering, precision machinery, and aerospace. Rods can exist alone to achieve force transmission between two separate parts; or a rod system can be composed of multiple rods, which can be composed of trusses or other forms to play a light-weight support role. Rods initially consisted entirely of passive structures, such as house trusses composed of wooden rods or lightweight solids composed of metal rods. Although this kind of passive structure is simple in structure, the disturbance suppression of the supported load completely depends on the prior design, and there is often a problem that the mass of the ...

AI Technical Summary

Problems solved by technology

Since the effect of the rod system support structure is mainly reflected in the support stiffness, the present invention proposes a rod design method that relies on a semi-active method to achieve quasi-infinite stiffness. The problem of excessive mass of the bar system truss, on the other hand, solves the problems of large interaction volume of the upper controller of the active bar system structure, too many control variables, etc., resulting in too complicated control loop of the system and poor robustness, etc.

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