Hybrid mechanism-based five-dimensional vibration isolation platform

Abstract

The invention relates to a five-dimensional vibration isolation device which is suitable for equipment arranged on a dynamic carrier. Aiming at the problem of five-dimensional vibration of the equipment on the dynamic carrier, one hybrid mechanism-based vibration isolation platform is arranged between an equipment mounting platform and a carrier connecting platform to realize five-dimensional vibration isolation. The vibration isolation platform consists of the equipment mounting platform (1), a middle platform (2), the carrier connecting platform (5), six branched chains comprising vibration isolation subsystems and a constraint branch containing no vibration isolation subsystem, so that vibration isolation along spatial three-movement two-rotation directions can be realized. Each vibration isolation subsystem in each branched chain is formed by connecting a linear spring (3) and a magneto-rheological damper (4) in parallel; and control over the entire platform is realized by changing a damping coefficient of the magneto-rheological damper. Since the movement and the rotation of a hybrid mechanism are fully decoupled, the control of the system is relatively simple. Experiments prove that the vibration isolation platform using the five-dimensional vibration isolation device enables that a vibration signal transferred to the equipment by the carrier is obviously weakened, so that the vibration isolation platform has the advantage of effectively and reliably improving the dynamic environment of the equipment of the dynamic carrier.

Description

technical field [0001] The invention relates to a five-dimensional vibration isolation device for equipment placed on a dynamic carrier. Background technique [0002] Due to the complexity and variability of the motion state of the dynamic carrier, the equipment placed on the dynamic carrier is often in a harsh dynamic environment during its working life. Therefore, ensuring that the equipment can not be damaged and work normally is a must in the process of equipment carrierization. The problem. Since the vibration of the equipment on the dynamic carrier is mostly multi-dimensional vibration, the well-developed single-dimensional vibration isolation theory cannot be directly applied. The usual practice is to use the multi-dimensional deformation of flexible materials to implement multi-dimensional vibration isolation to a certain extent through special materials or to achieve multi-dimensional vibration isolation through the combination of single-dimensional vibration isola...

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Problems solved by technology

In addition to providing multi-dimensional motion, the parallel mechanism also has unique characteristics such as high structural rigid

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