A New Type of Damping Device Based on Stewart Configuration

Abstract

The invention discloses a novel vibration damping device based on a Stewart configuration, which relates to the technical field of vibration damping and includes an upper platform, a lower platform and a plurality of single-leg damping units. The two orthogonal ways are connected with the upper and lower platforms to form a cubic structure damping platform. The cubic Stewart space configuration is used to solve the problem of difficult decoupling, which can not only ensure the stable connection between the hydrophone and other sensors and the basic working surface, but also effectively reduce the displacement transfer rate of the hydrophone and make the displacement transfer rate more accurate. The natural frequency of small, low-frequency vibration reduction is lower, the low-frequency vibration isolation performance is better, and the ground vibration of the sensor can be greatly reduced, so that it can obtain high measurement accuracy even in harsh ocean conditions. The invention is applicable to the vibration reduction of instruments operating in the ocean environment, can greatly increase the acoustic stealth performance of the unmanned boat on the water surface, and improve the working environment of the sensors on the unmanned boat.

Description

technical field [0001] The invention relates to the technical field of vibration reduction, in particular to a novel vibration reduction device based on a Stewart configuration. Background technique [0002] In recent years, the demand for surface intelligent transportation has gradually increased. For a smart carrier full of sensors such as lidars and hydrophones, vibration is an inevitable effect. The harsh marine environment, such as internal ocean currents and other factors, will seriously affect the performance of the sensor. [0003] Traditional sensors such as hydrophones and laser radars are often connected and installed with the working base frame by rigid connection. The traditional rigid connection has great advantages in connection strength and better fixing performance. However, this rigid connection faces problems such as strong load impact and platform vibration. These shocks and vibrations seem to be insignificant for general-purpose machines, but sensors ...

AI Technical Summary

Problems solved by technology

Although it uses the low stiffness characteristics of the diaphragm spring and the series characteristics of the elastic elements to achieve good low-frequency vibration isolation performance, but due to the single-leg structure design, the displacement transfer rate and low-frequency vibration isolation performance cannot meet the requirements of intelligent transportation on the water surface. High anti-vibration requirements, especially in reducing the vibration of the sensor's foundation

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