Bird-Inspired Spatial Flapping Wing Mechanism via Coupled Linkages with Single Actuator
Bird-Inspired Spatial Flapping Wing Mechanism via Coupled Linkages with Single Actuator
This paper presents a bird-inspired flapping-wing mechanism built from two coupled spatial four-bars driven by a single motor. One linkage is actuated to generate the desired spatial sweeping stroke, while the serially coupled linkage remains unactuated and passively switches between extended and folded wing configurations over the stroke cycle. The authors introduce a simplified kinematic methodology for constructing Bennett linkages from quadrilaterals that contain a desired surface area and further leverage mechanically induced passive state switching. A 3D-printed prototype is assembled and tested, demonstrating the intended spatial stroke and passive folding behavior.
The authors present a novel spatial single-loop mechanism utilizing coupled Bennett linkages driven by a single actuator to achieve coordinated sweep-and-fold wing motions, validated by a 3D-printed prototype; the work introduces a simplified kinematic methodology for constructing these linkages and leverages passive state switching to reduce weight and control complexity.
Source: arXiv Robotics — research abstracts · Read original article ↗
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3D-printed prototype is assembled and tested, demonstrating the intended spatial stroke and passive folding behavior.
Open source S5
ge design outside the reach of most engineers, a gap addressed by the Rational Linkages library recently developed by the authors. This paper presents a bird-inspired flapping-wing mechanism built from two coupled spatial four-bars, driven by a single motor. One linkage is actuated to generate the desired spatial sweeping stroke, while the serially coupled linkage remains unactuated and passively switches between ext
Open source S3
ended and folded wing configurations over the stroke cycle. Additionally, we introduce a simplified kinematic methodology for constructing Bennett linkages from quadrilaterals that contain a desired surface area and further leverage mechanically induced passive state switching. This architecture realizes a coordinated sweep-and-fold wing motion with a single actuation input, reducing weight and control complexity. A
Open source S4
arXiv:2604.07677v2 Announce Type: replace Abstract: Spatial single-loop mechanisms such as Bennett linkages offer a unique combination of one-degree-of-freedom actuation and nontrivial spatial trajectories, making them attractive for lightweight bio-inspired robotic design. However, existing synthesis methods rely on dual quaternion algebra and rational motion interpolation and factorization, placing task-based linka
Open source S2
Bird-Inspired Spatial Flapping Wing Mechanism via Coupled Linkages with Single Actuator
Open source S1
Source：arXiv Robotics — research abstracts · arxiv.org