Double piezoelectric actuators type micro flapping wing aircraft based on soft hinges

Abstract

The invention discloses a double piezoelectric actuators type micro flapping wing aircraft based on soft hinges. The double piezoelectric actuators type micro flapping wing aircraft comprises two bent beam type twin-lamella piezoelectric actuators, two transmission mechanisms in central symmetry distribution, an outer frame surrounding the periphery of the aircraft, and two wing structures containing driven torsion hinges. The bent beam type twin-lamella piezoelectric actuators are bent under the excitation of voltage, the wings are driven to move by the transmission mechanisms, so that a force needed by the motion of the aircraft is generated. By adopting the structure and using the laser micro-cutting technology and soft hinge connection style, the processing and manufacturing of the micro flapping wing aircraft with wingspan of 3 centimeters are achieved. The mechanism is simple and compact in structure; two actuators are respectively used for controlling the two wings so that the aircraft can achieve other motions besides hovering and straight-line flight.

Description

technical field [0001] The invention relates to a device in the field of micro-aircraft technology, in particular to a flexible hinge-based dual piezoelectric-driven micro-flapping-wing aircraft. Background technique [0002] Micro-flapping-wing aircraft is a micro-aircraft that is different from fixed-wing and rotary-wing aircraft, and instead imitates birds or insects and uses complex movements of wings to achieve flight. With the development of science and technology in recent years, Micro Aircraft (MAV) is becoming a research hotspot in the scientific and technological circles. In particular, the development of MEMS technology provides the possibility for the processing and manufacturing of small-sized aircraft. The U.S. Defense Advanced Research Projects Agency proposed the basic indicators of micro-aircraft: the size of the aircraft is less than 15cm, the weight is between 10g and 100g, the flight time is 20-60min, and the flight speed is 25-70km / h. Micro-flapping-wi...

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Problems solved by technology

[0006] However, for the Kunming-style aircraft with a wingspan of 3cm, or the aforementioned patent No. 102328744A, which adopts an electromagnetic drive method, due to the influence of the scale effect, it cannot provide a large output force to achieve flight capability, and the transmission method used in it A certain deformation of the structure is required, which will store potential energy and reduce the output power; or if Purdue University adopts the traditional transmission method, the influence of the surface force on the small scale will increase, and normal transmission cannot be realized, so only a larger-scale aircraft can be made; or there is only one Degree of freedom, unable to cope with complex airflow environment, and perform variable flight attitude control

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