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A stick-slip inertial linear actuator based on friction control of surface microstructure

A linear drive, microstructure technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motor, generator/motor, electrical components, etc., can solve the problem of large displacement fluctuation of the driver, small output speed and output force, etc. problems, to achieve the effect of reducing displacement fluctuations, reducing return displacement, and stable operation

Active Publication Date: 2018-12-18
NINGBO UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] The present invention solves the problem that the output speed and output force of the existing piezoelectric inertial driver are relatively small, and the displacement fluctuation of the driver is relatively large, and further provides a stick-slip inertial linear driver based on surface microstructure friction regulation

Method used

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  • A stick-slip inertial linear actuator based on friction control of surface microstructure
  • A stick-slip inertial linear actuator based on friction control of surface microstructure
  • A stick-slip inertial linear actuator based on friction control of surface microstructure

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Embodiment Construction

[0022] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0023] see Figure 1-Figure 5 As shown, a stick-slip inertial linear actuator based on surface microstructure friction regulation in this embodiment includes a flexible hinge amplifying mechanism 2, a piezoelectric stack actuator 3, a guide rail 4, a base 6, a mover 7 and supporting balls 8;

[0024] The flexible hinge amplifying mechanism 2 is fixed on the base 6, the piezoelectric stack actuator 3 is installed on the flexible hinge amplifying mechanism 2, and the piezoelectric stack actuator 3 is screwed on the flexible hinge amplifying mechanism 2 through the pre-tightening connector 1 Preload is applied, one end of the guide rail 4 is connected to the flexible hinge amplifying mechanism 2, and the other end is supported on the supporting ball 8 arranged on the base 6, the guide rail 4 is proces...

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Abstract

The invention relates to a sticky-slip inertial linear actuator based on friction control of surface microstructure, which relates to an actuator to solve the problems that the output displacement andoutput force of the existing piezoelectric inertial actuator are small and the displacement fluctuation of the actuator is large. The actuator comprises a flexure hinge amplifying mechanism, a piezoelectric stack actuator, a guide rail, a base, a mover and support balls. A magnify mechanism of that flexure hinge is fixed on the base, The piezoelectric stack actuator is installed on the flexure hinge amplifying mechanism, the piezoelectric stack actuator exerts a pretightening force through a pretightening connector screwed on the flexure hinge amplifying mechanism, a micro-structure is machined on the guide rail, and a friction material layer with self-lubricating characteristics in contact with the micro-structure is fixedly connected on the surface of the mover; Micro-structure can makethe forward friction large, reverse friction small, friction material layer with micro-structure, reduce the displacement of the actuator reverse backhaul displacement, improve the operation stability, and increase the unidirectional load capacity of the actuator. The present invention is used in the field of precision drive.

Description

Technical field [0001] The invention relates to a driver, in particular to a stick-slip inertial linear driver based on surface microstructure friction control, and belongs to the field of piezoelectric driving technology. Background technique [0002] The piezoelectric stick-slip (friction type) inertial actuator drives the movement through the slow elongation-rapid shortening of piezoelectric ceramics or the slow bending-rapid straightening of bimorphs. It has low noise, slight wear, low energy consumption, and simple driving. , large driving stroke, simple control system and other advantages. Therefore, piezoelectric stick-slip inertia actuators have very broad application prospects in the field of precision driving. [0003] An asymmetric piezoelectric inertial actuator with application number 201220230938.9 uses different lengths of piezoelectric wafers to generate different inertial impact forces in two directions to increase the stroke and achieve rotational motion. ...

Claims

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Application Information

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IPC IPC(8): H02N2/04H02N2/02
Inventor 陈鹏飞李锦棒于爱兵曾帅帅
Owner NINGBO UNIV
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