High-frequency-response infinite-stiffness intelligent supporting rod piece based on semi-active control method

Abstract

The invention discloses a high-frequency-response infinite-stiffness intelligent supporting rod piece based on a semi-active control method. The high-frequency-response infinite-stiffness intelligent supporting rod piece comprises a common supporting piece (1), a series-connection rod piece (2) made of electrostrictive materials, an upper strain measurement sensor set (3) pasted to the common supporting piece (1), a high-integration-degree analog controller (4) and a miniature constant-temperature control box (5) used for installing the high-integration-degree analog controller. According to the high-frequency-response infinite-stiffness intelligent supporting rod piece, semi-active control over the supporting rod piece is achieved through a simulation closed loop, the infinite-stiffness characteristic of the rod piece is formed by achieving high-frequency-response zero deformation of the whole rod piece, the stiffness characteristic of a rigid piece is not limited by the mass of the rod piece any more, and the high-frequency-response infinite-stiffness intelligent supporting rod piece has the beneficial effects of being convenient to integrate and independent of an upper controller.

Description

technical field [0001] The invention belongs to the field of intelligent structure and control, and in particular relates to a high-response support bar based on a semi-active control method. Background technique [0002] Support rods are the most common form of components in various fields, and are common components of various entities in civil engineering, optical engineering, precision machinery, and aerospace. The rod can exist alone to realize the force transmission between two separate parts; or the rod system can be composed of multiple rods, and it can be composed of truss or other forms to play the role of lightweight support. Members originally consisted entirely of passive structures, such as house trusses made of wooden members or lightweight solids made of metal members. Although this type of passive structure is simple in structure, the disturbance suppression of the supported load is completely dependent on prior design, and there is often the problem that th...

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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