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A large displacement micro-actuator and its driving method

A large displacement, actuator technology, applied in the direction of generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve the problem of small displacement and energy conversion of piezoelectric ceramic actuators. Low efficiency, complex technical structure and other problems, to achieve the effect of low cost, simple structure and large displacement

Active Publication Date: 2018-10-30
湖北三江航天红林探控有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a large-displacement micro-actuator and its driving method. The technical problems of complex technical structure and low energy conversion efficiency in motor drive, electromagnetic drive and gunpowder drive, etc., solve the problem of small displacement of piezoelectric ceramic actuators at the same time

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  • A large displacement micro-actuator and its driving method
  • A large displacement micro-actuator and its driving method
  • A large displacement micro-actuator and its driving method

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0028] figure 1 It is a structural schematic diagram of the large-displacement micro-actuator of the present invention. The large-displacement micro-actuator includes a drive unit 1 and a casing 2, and the drive unit 1 is located inside the casing 2. The drive unit 1 includes an actuator 1-1, a connecting piece 1-2 and a locking mechanism 1-3.

[0029] Such as figure 2 As shown, th...

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Abstract

The invention discloses a large-displacement miniature actuator and a driving method thereof, and belongs to the technical field of an actuator. The actuator comprises a driving unit and a shell, wherein the driving unit comprises an execution mechanism, a connection piece and locking mechanisms, the execution mechanism is formed by connecting a plurality of sheet-shaped piezoelectric ceramics in series, the connection piece comprises an S-shaped planar spring, a clamping head and a rod, the locking mechanisms are two high-temperature shortened shape memory alloys, and a plurality of grooves are formed in the shell. By means of a piezoelectric ceramic inverse piezoelectric effect and an embodiment function of the locking mechanisms and the shell, the telescopic movement of the actuator is achieved. The actuator has the advantages of small size, large driving force, large displacement, simple structure, low cost, no noise, no magnetism and the like, is convenient to install and can be widely applied to an electromechanical system.

Description

technical field [0001] The invention belongs to the technical field of actuators, and in particular relates to a large-displacement micro-actuator and a driving method thereof. Background technique [0002] At present, in the electromechanical system and weapon system, the pin pusher extension actuation and the pin puller retraction actuation are two common types of drives. The drive methods of the above two types of motion drives are mainly motor drive and electromagnetic drive. and gunpowder drive. Motor-driven and electromagnetic-driven drivers have problems such as complex structure, high price, and low efficiency of electrical-mechanical energy conversion. The driver driven by gunpowder mainly uses the gas generated by the combustion of gunpowder to drive the piston to do work. Due to the influence of factors such as structure, gas pressure transmission direction and sealing, in actual engineering applications, the driver driven by gunpowder has low reliability, low en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/02H02N2/04
CPCH02N2/02H02N2/04
Inventor 李响朱海军雷林
Owner 湖北三江航天红林探控有限公司