Elastic Element Integration for Improved Flapping-Wing Micro Air Vehicle Performance

Sahai, Ranjana; Galloway, Kevin C.; Wood, Robert J.

doi:10.1109/tro.2012.2218936

Cited by 46 publications

(37 citation statements)

References 24 publications

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“…This research showed that clicking compliant mechanisms could produce more thrust per input power than a conventional rigid-body counterpart. Finally, Sahai et al [17] demonstrated that flapping transmission with rubber flexural hinges can reduce input power up to 20%.…”

Section: Introductionmentioning

confidence: 99%

Virtual-work-based optimization design on compliant transmission mechanism for flapping-wing aerial vehicles

Zhang

Rossi

et al. 2016

2016 International Conference on Manipulation, Automation and Robotics at Small Scales (MARSS)

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Abstract-This paper presents a method for analysing and optimizing the design of a compliant transmission mechanism for a flapping-wing aerial vehicle. Its purpose is of minimizing the peak input torque required from a driving motor. In order to maintain the stability of flight, minimizing the peak input torque is necessary. To this purpose, first, a pseudo-rigid-body model was built and a kinematic analysis of the model was carried out. Next, the aerodynamic torque generated by flapping wings was calculated. Then, the input torque required to keep the flight of the vehicle was solved by using the principle of virtual work. The values of the primary attributes at compliant joints (i.e., the torsional stiffness of virtual spring and the initial neutral angular position) were optimized. By comparing to a full rigidbody mechanism, the compliant transmission mechanism with well-optimized parameters can reduce the peak input torque up to 66.0%.

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Section: Introductionmentioning

confidence: 99%

Virtual-work-based optimization design on compliant transmission mechanism for flapping-wing aerial vehicles

Zhang

Rossi

et al. 2016

2016 International Conference on Manipulation, Automation and Robotics at Small Scales (MARSS)

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“…The results were sufficiently precise and repeatable to enable the 80 mg robot to demonstrate an unconstrained flight [105]. A similar procedure was also used to construct slightly larger wings from 400 µm thick titanium shim and 1.5 µm Mylar film for a 3 g MAV [116,117]. To summarize the methods and materials used for fabrication of artificial wings over different scales, we tabulate an extensive list of fabricated artificial wings together with the corresponding fabrication methods and materials in table 2.…”

Section: (B) Wing Fabricationmentioning

confidence: 99%

Aerodynamics, sensing and control of insect-scale flapping-wing flight

et al. 2016

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There are nearly a million known species of flying insects and 13 000 species of flying warm-blooded vertebrates, including mammals, birds and bats. While in flight, their wings not only move forward relative to the air, they also flap up and down, plunge and sweep, so that both lift and thrust can be generated and balanced, accommodate uncertain surrounding environment, with superior flight stability and dynamics with highly varied speeds and missions. As the size of a flyer is reduced, the wing-to-body mass ratio tends to decrease as well. Furthermore, these flyers use integrated system consisting of wings to generate aerodynamic forces, muscles to move the wings, and sensing and control systems to guide and manoeuvre. In this article, recent advances in insect-scale flapping-wing aerodynamics, flexible wing structures, unsteady flight environment, sensing, stability and control are reviewed with perspective offered. In particular, the special features of the low Reynolds number flyers associated with small sizes, thin and light structures, slow flight with comparable wind gust speeds, bioinspired fabrication of wing structures, neuron-based sensing and adaptive control are highlighted.

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“…Similarly, for CTM II, the input torque relative to the pure RMB, is reduced by 40.4% and 73.9%, for maximum and minimum input torques, respectively. In addition, it can also be found that the peak torque optimized of the compliant mechanism obtained by using the limitations Case I is smaller that the corresponding gotten by utilizing the constraints Case II, which shows that the constraint method provided in this paper is better than that used in (13). In fact, the constraint conditions Case II is only a specific subset of the limitations Case I.…”

Section: Results Analysismentioning

confidence: 74%

“…Similarly, Sahai et al (13,14) attempted to integrate flexural hinges into a four-bar compliant flapping transmission for a FWMAV with approximately 3 grams of weight. A distinguishing feature of the mechanism is using rubber-based flexures in two of its joints (joints 3 and 4, see The prototype of the Harvard University's FWMAV and its the four-bar transmission mechanism.…”

Section: Motor-based Compliant Transmission Mechanismmentioning

confidence: 99%

See 1 more Smart Citation

Design and Control of Flapping Wing Micro Air Vehicles

Zhang¹

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Elastic Element Integration for Improved Flapping-Wing Micro Air Vehicle Performance

Cited by 46 publications

References 24 publications

Virtual-work-based optimization design on compliant transmission mechanism for flapping-wing aerial vehicles

Virtual-work-based optimization design on compliant transmission mechanism for flapping-wing aerial vehicles

Aerodynamics, sensing and control of insect-scale flapping-wing flight

Design and Control of Flapping Wing Micro Air Vehicles

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