Double-wing driving mechanism for dragonfly-imitating ornithopter

Abstract

The invention discloses a double-wing driving mechanism for a dragonfly-imitating ornithopter, and belongs to the technical field of ornithopters. The mechanism comprises a double-wing active energy piezoelectric actuator and a pair of side wing driving mechanisms with the same structure; the lower end of the double-wing active energy piezoelectric actuator is fixedly connected with a driving mechanism connecting frame; the pair of side wing driving mechanisms of the same structure comprises a side wing auxiliary kinetic energy piezoelectric actuator and side wing flapping mechanisms, and the two side wing flapping mechanisms are symmetrically arranged on the left side and the right side of the double-wing active energy piezoelectric actuator. The lower end of the side wing auxiliary kinetic energy piezoelectric actuator is fixedly connected with the driving mechanism connecting frame; each side wing flapping mechanism comprises a side wing flapping structure and a side wing rocker arm; the side wing flapping structure comprises a main kinetic energy driving connecting arm and an auxiliary kinetic energy driving connecting arm; the whole side wing rocker arm comprises a flapping wing connecting part and a flapping wing driving part. The mechanism has the characteristics of light weight, compact structure, independent control of four-wing amplitude and vibration frequency and the like.

Description

technical field [0001] The invention relates to the technical field of flapping-wing aircraft. Background technique [0002] The vibration frequency of the dragonfly's wings is 30-40Hz, which can realize various flight modes such as stable hovering, fast turning, and continuous forward flight. This has a lot to do with the independent control of the four wings of the dragonfly itself. The structure of the dragonfly is the best template for the design and development of micro-flapping-wing aircraft. However, most of the current dragonfly-like flapping-wing aircraft are difficult to achieve independent control of the wings, or have problems such as small flapping range. [0003] Large-scale flapping-wing aircraft are driven by motors, but the driving force and efficiency of the motors will drop significantly on small scales. The shafts and gears in the traditional mechanical structure cannot guarantee high transmission efficiency, and the processing is extremely difficult. ...

AI Technical Summary

Problems solved by technology

Although this direct attachment of the piezoelectric material to the wing enables independent control of individual wings, the limited displacement of the piezoelectric material limits the amplitude of the flapping wings.

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