Novel vibration reduction device based on Stewart configuration

Abstract

The invention discloses a novel vibration reduction device based on Stewart configuration, and relates to the technical field of vibration reduction. The novel vibration reduction device comprises anupper platform, a lower platform and a plurality of single-leg vibration reduction units. Every two adjacent single-leg vibration reduction units are connected with the upper platform and the lower platform in a spatial and orthogonal manner to form a cube structure vibration reduction platform. The cubic Stewart spatial configuration is adopted to solve the problem that decoupling is difficult, so that the stable connection between sensors such as a hydrophone and the basic working face can be guaranteed, the displacement transmission rate of the hydrophone can be effectively reduced, the displacement transmission rate is smaller, the natural frequency of low-frequency vibration reduction is lower, the low-frequency vibration isolation performance is better, the foundation vibration of the sensors can be reduced to a great extent, and high measurement precisions can also be obtained in severe marine conditions. The novel vibration reduction device is suitable for vibration reduction of instruments operated in the marine environment, the acoustic stealth performance of a water surface unmanned boat can be increased to a great extent, and the working environment of the sensors on the unmanned boat is improved.

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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