尾 の ない 空 の ロボット フラッパー は,ハエ が 急速 な 傾き で トーク クープリング を 用い て いる こと を 示し て い ます
Matěj Karásek1, Florian T Muijres2, Christophe De Wagter3
1Micro Air Vehicle Laboratory, Control and Simulation, Delft University of Technology, Delft, Netherlands. m.karasek@tudelft.nl.
まとめ
研究 者 たち は,昆虫 の 飛行 演習 を 模倣 し て 自由 に 飛ぶ 敏捷 な ロボット を 開発 し まし た. このバイオインスピレーションのロボットは 脱出ターンで 滑走回転を誘導し 飛行研究を進めています
科学分野:
- ロボット
- バイオインスピレーションエンジニアリング
- エロダイナミクス
背景:
- 昆虫は飛ぶのに 優れた機敏さがありますが その制御メカニズムを研究するのは 難しいことです
- 生きている動物や 縛られたロボットを用いる既存の方法は 飛行制御の仮説を検証する上で 限界があります
研究 の 目的:
- プログラム可能な 自律飛行ロボットで 昆虫の飛行を模倣します
- スケールアップされたロボットプラットフォームを使って 昆虫の脱出作戦の背後にある 空力学的原理を調査する
主な方法:
- 機動的で自律的なロボットを 設計し作りました
- フルーツフライのような 昆虫に観察された 急速な脱出の動きを 複製するように ロボットをプログラムしました
- ロボットのアクティブ・ヨウ・コントロールを無効にして パッシブ・エアロダイナミック・エフェクトを隔離した.
主要な成果:
- ロボットは 逃亡方向への ゆらゆら回転を含む 昆虫の急速な逃亡操作を 模倣しました
- ゆらぎ回転はゆらぎトルクとロール/ピッチトルクの間の被動的な空気力学的なカップリングによるものであることが実証された.
- ロボットの性能は 果物ハエの55倍の大きさにもかかわらず 検証されました
結論:
- パッシブエアロダイナミックカップリングは,迅速な操作中に昆虫の飛行制御に重要な役割を果たします.
- 開発されたロボットは 動物の飛行ダイナミクスを研究するための貴重なツールとして機能します
- ロボットの能力は,高度な機敏さを要求する現実の飛行ミッションの可能性を開きます.
関連する概念動画
Torque
22.5K
Torque is an important quantity for describing the dynamics of a rotating rigid body. We see the application of torque in many ways in the world, such as when pressing the accelerator in a car, which causes the engine to apply additional torque on the drivetrain. Here, we define torque and provide a framework to create an equation to calculate torque for a rigid body with fixed-axis rotation.
Torque can be considered as the rotational counterpart to force. Since forces change the translational...
Torque can be considered as the rotational counterpart to force. Since forces change the translational...
22.5K
Torque Free Motion
818
The torque-free motion refers to the movement of a rigid body in space when no external torques are acting upon it. This type of motion can be observed in environments where there are no external forces or frictions, like in outer space. For example, a rotation of Mars in space is a torque-free motion. Mars is an axisymmetric object, meaning it has an axis of symmetry along which it rotates, designated as the z-axis. The rotating frame of reference is defined such that the center of mass of...
818
Net Torque Calculations
11.5K
When a mechanic tries to remove a hex nut with a wrench, it is easier if the force is applied at the farthest end of the wrench handle. The lever arm is the distance from the pivot point (the hex nut in this case) to the person’s hand. If this distance is large, the torque is higher. Only the component of the force perpendicular to the lever arm contributes to the torque. Therefore, pushing the wrench perpendicular to the lever arm is more advantageous. If multiple people apply force to...
11.5K
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)
1.7K
Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others.
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
1.7K
Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)
1.5K
Vicinal or three-bond coupling is commonly observed between protons attached to adjacent carbons. Here, nuclear spin information is primarily transferred via electron spin interactions between adjacent C‑H bond orbitals. This generally favors the antiparallel arrangement of spins, so 3J values are usually positive.
The extent of coupling depends on the C‑C bond length, the two H‑C‑C angles, any electron-withdrawing substituents, and the dihedral angle between the involved orbitals. The...
The extent of coupling depends on the C‑C bond length, the two H‑C‑C angles, any electron-withdrawing substituents, and the dihedral angle between the involved orbitals. The...
1.5K
Torque On A Current Loop In A Magnetic Field
5.9K
The most common application of magnetic force on current-carrying wires is in electric motors. These consist of loops of wire, which are placed between the magnets with a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate, thus converting electrical energy to mechanical energy.
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...
5.9K


