A piezoelectric actuator protection device

A piezoelectric actuator and protection device technology, which is applied in the direction of generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve the problem that piezoelectric ceramics are brittle and easy to break To solve problems such as fracture failure, to achieve stable mechanical properties, ensure linear output characteristics, and excellent anti-torsion performance

Active Publication Date: 2022-06-07
XI AN JIAOTONG UNIV
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Problems solved by technology

In order to achieve greater capacity displacement output, piezoelectric actuators are generally made of multi-layer piezoelectric ceramics stacked, coupled with the characteristics of piezoelectric ceramics such as brittleness, which makes the displacement output end of the piezoelectric actuator It is easy to break and fail

Method used

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  • A piezoelectric actuator protection device
  • A piezoelectric actuator protection device
  • A piezoelectric actuator protection device

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Embodiment Construction

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] In the description of the present invention, it should be understood that the terms "center", "portrait", "horizontal", "top", "bottom", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inside", "outside", "one side", "one end", "one side", etc. The orientation or positional relationship is only for the convenience of describing the present inventio...

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Abstract

The invention discloses a piezoelectric actuator protection device. One end of the piezoelectric actuator is connected to the top connecting rod through a flexible hinge, and an inner shaft sleeve is set on one end of the piezoelectric actuator and the flexible hinge; The other end of the actuator is connected to the bottom connecting rod, the piezoelectric actuator and the inner bushing are covered with an outer bushing, the inner bushing is connected to the top connecting rod, and the outer bushing and the bottom connecting rod are tightly connected to form a piezoelectric actuator. Actuator protection device. The protection device of the present invention can be used without changing the structure of the original piezoelectric actuator, and has the advantages of simple structure, light weight, easy disassembly and installation, high reliability, and strong temperature adaptability, and does not affect the original piezoelectric actuator. The displacement output performance of the device.

Description

technical field [0001] The invention belongs to the technical field of piezoelectric actuators, and in particular relates to a piezoelectric actuator protection device. Background technique [0002] Piezoelectric actuator is a direct drive actuator that utilizes the inverse piezoelectric effect of piezoelectric ceramics. It has the advantages of simple structure, fast response, power-off locking, low power consumption, large thrust, and strong adaptability to vacuum environment. It is suitable for high-precision motion control and vibration control, and the displacement resolution can reach nm level. In order to achieve greater displacement output, piezoelectric actuators are generally made of multi-layer piezoelectric ceramics stacked, coupled with the characteristics of piezoelectric ceramics that are easily brittle, which makes the displacement output end of piezoelectric actuators in the process of use. Fracture failure problems are prone to occur. SUMMARY OF THE INVE...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/04
CPCH02N2/04H02N2/043
Inventor 董龙雷周嘉明严健刘建刘亚宁
Owner XI AN JIAOTONG UNIV
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