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UID:6627@i2m.univ-amu.fr
DTSTART;TZID=Europe/Paris:20201125T100000
DTEND;TZID=Europe/Paris:20201125T110000
DTSTAMP:20241120T201756Z
URL:https://www.i2m.univ-amu.fr/evenements/intermittent-control-strategy-c
 an-enhance-the-stabilization-robustness-in-bumblebee-hovering-ru-xu/
SUMMARY:Ru Xu (Biomechanical Engineering Lab\, Chiba University\, Chiba\, J
 apan): Intermittent control strategy can enhance the stabilization robustn
 ess in bumblebee hovering - Ru Xu
DESCRIPTION:Ru Xu: Active flight control plays a crucial role in stabilizin
 g the body posture of insects to stay aloft under a complex natural enviro
 nment. Insects can achieve a closed-loop flight control by integrating the
  external mechanical system and the internal working system through manipu
 lating wing kinematics according to feedback information from multiple sen
 sors. While studies of Proportional Derivative (PD) / Proportional Integra
 l Derivative (PID)-based algorithms are the main subject to explore the co
 ntinuous flight control mechanisms associated with insect flights\, it is 
 normally observed that insects achieve an intermittent spike firing in ste
 ering muscles to manipulate wings in flight control discontinuously. Here 
 we proposed a novel intermittent control strategy for a 3 Degree of Freedo
 m (DoF) pitch-control and explored its stabilization robustness in bumbleb
 ee hovering. An integrated computational model was established and validat
 ed\, which comprises an insect-inspired dynamic flight simulator and a nov
 el discrete feedback controller as well as a simplified free-flight dynami
 c model. We found that the intermittent control model can achieve an angul
 ar-dominant flight control\, whereas the continuous control model correspo
 nds to an angular-velocity-dominant one. Given the biological constraints 
 in sensorimotor neurobiology and musculoskeletal mechanics\, the intermitt
 ent control strategy was examined capable of enhancing the stabilization r
 obustness in terms of sensory latency\, stroke derivation\, spike interval
 \, and damping strength. Our results indicate that the intermittent contro
 l strategy is likely a sophisticated flight control mechanism in insect fl
 ights while providing a bioinspired flight-control design for insect size 
 flapping-wing Micro Air Vehicles.\nIOSSB Seminar\n\n25.11.2020\, 10h00 CET
  (=18h JST) (note change in time from 14h00 to 10h00!)
CATEGORIES:Interdisciplinary online seminar series on
 Biolocomotion,Virtual event
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