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Aerodynamic performance of flying insects has been widely investigated due to its remarkable flight ability. In this research, we propose a Micro Electro Mechanical Systems (MEMS) multi-axis force sensor probe to detect forces in four axes (x, y, z and torque). The sensor probe was designed to have force resolutions under 1.0 μN and time resolution more than 5,000 Hz. To avoid resonation, the first resonant frequency of the sensor probe was made higher than the flapping frequency of a flying fruit fly.
The experimental results show that forces changed periodically in concert with flapping cycle with the frequency of approximately 200 Hz. According to the flapping motion, the generated forces varied. In ordinary flapping pattern, the net vertical force during one stroke corresponds to the weight of a fly body. We also found that the thrust direction force was the largest in three axis components. Thus, the developed sensor probe was able to measure the force vector during whole flapping cycle with very high force and time resolution.
References :
1.Hidetoshi Takahashi, Shinnosuke Hirakawa, Tomoyuki Takahata, Masayoshi Itoh, Kei Itoh, Kiyoshi Matsumoto and Isao Shimoyama, “Measurement of flight force of a fruit fly using a Multi-axial force sensor probe,”; SEB Annual Main Meeting 2015, Prague, Czech, Jun 30 - July 3, 2015 (Accepted).
2.Hidethoshi Takahashi, Shinnosuke Hirakawa, Masayoshi Ito, Kei Ito, Tomoyuki Takahata, Kiyoshi Matsumoto, and Isao Shimoyama, “MEMS多軸力センサを用いたハエの飛翔力計測 (in Japanese Only),” 機械学会2015年度年次大会 (in Japanese Only), Hokkaido, Japan, Sep. 13-16, 2015 (Accepted).
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