Piezoelectric drive underwater propeller vector propulsion system and working method thereof

Abstract

The invention discloses a piezoelectric drive underwater propeller vector propulsion system and a working method thereof. The propulsion system comprises a shell, a piezoelectric drive unit, a connecting shaft and a spring. The connecting shaft comprises a fixing part, a supporting part and an adjusting part which are coaxially and fixedly connected in sequence; the shell comprises a stress part,a conduction part, a ball hinge, a connecting cylinder and a propeller; the ball hinge comprises a ball shell and a ball body; the piezoelectric drive unit comprises a driving disc, a first piezoelectric ceramic piece and a second piezoelectric ceramic piece; the piezoelectric drive unit is in interference connection with the supporting part of the connecting shaft; the spring sleeves the supporting part of the connecting shaft, one end of the spring abuts against the piezoelectric drive unit, and the other end of the spring abuts against the connecting shaft adjusting part to apply pre-pressure; the ball body of the ball hinge is connected with the adjusting part of the propeller system connecting shaft through threads; during work, piezoelectric ceramics of the piezoelectric driving unitare excited, particles on the surface of a driving disc of the piezoelectric driving unit generate micro-amplitude rotating traveling wave motion, the shell is driven by friction force to rotate, andvector propulsion is achieved.

Description

technical field [0001] The invention relates to the fields of piezoelectric actuation and underwater propeller vector propulsion systems, in particular to a piezoelectric-driven underwater propeller vector propulsion system and a working method thereof. Background technique [0002] The ocean plays a pivotal role in my country's national defense construction and economic development. Due to the needs of marine resource exploration and national defense construction, underwater propulsion systems have been greatly developed. The propeller vector underwater propulsion system is practical, reliable and convenient, and the technology is mature and easy to operate. It is the main research object of the underwater propulsion system. However, the existing propeller vector propulsion system has many disadvantages, for example, the complex transmission structure leads to a variety of kinematic couplings, which reduces the transmission accuracy, and the airframe and motor are difficul...

AI Technical Summary

Problems solved by technology

However, the existing propeller vector propulsion system has many disadvantages, for example, the complex transmission structure leads to a variety of kinematic couplings, which reduces the transmission accuracy, and the body and motor are difficult to seal in the deep sea high pressure environment.

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