Design and Prototype Testing of a Smart SMA Actuator for UAV Foldable Tail Wings DOI Creative Commons
Yan Cheng, Jun Wang, Rui Li

et al.

Actuators, Journal Year: 2024, Volume and Issue: 13(12), P. 499 - 499

Published: Dec. 6, 2024

The foldable tail wing system of UAVs offers advantages such as reducing the envelope size and improving storage space utilization. However, due to compact space, achieving multi-modal locking unlocking functionality presents significant challenges. This paper designs a new smart SMA actuator for use UAV wings. prototype testing demonstrated engineering practicality actuator. core content includes three main parts: thermomechanical actuation performance, structural design actuator, fabrication prototype. key parameters related phase transformation temperature force, were determined through DSC tensile testing. geometric kinetics kinematic analyses. Through linkage two pairs, enables both deployment wing. results folding show that, after vibration variation tests, is still able output an stroke 2.15 mm within 20 ms. integrates modes during mode transitions, offering fast response minimal requirements. It provides effective solution tailored needs system.

Language: Английский

Dynamics of a Self-Excited Vibrating Thermal Energy Harvester with Shape Memory Alloys and PVDF Cantilevers DOI Creative Commons

Ivo Yotov,

Georgi Todorov, Elitsa Gieva

et al.

Actuators, Journal Year: 2024, Volume and Issue: 14(1), P. 8 - 8

Published: Dec. 30, 2024

This paper discusses the dynamics of a novel energy harvester that converts heat into mechanical vibrations two polyvinylidene fluoride (PVDF) piezoelectric cantilevers generate electrical using shape memory alloy (SMA) filament. The are generated by symmetrical system masses placed on SMA filament, which moves transversely due to its own longitudinal temperature contractions and extensions. Temperature differences over source constant cause periodic changes in length An experimental setup was created study measuring mass displacements voltages cantilevers. Data were obtained dependence output voltage power load resistance consumer. results validated multiphysics dynamical model, taking account relationships between mechanical, thermal domains. vibrational modeling filament takes hysteresis properties their characteristics when time gradient changes, leading appearance minor sub-minor hysteresis. Research has shown from heater with 70 °C, maximum is 3.6 μW at 4 MΩ, 5.8 V 13 MΩ. important feature proposed design possibility miniaturizing system.

Language: Английский

Citations

1
Design and Prototype Testing of a Smart SMA Actuator for UAV Foldable Tail Wings DOI Creative Commons
Yan Cheng, Jun Wang, Rui Li

et al.

Actuators, Journal Year: 2024, Volume and Issue: 13(12), P. 499 - 499

Published: Dec. 6, 2024

The foldable tail wing system of UAVs offers advantages such as reducing the envelope size and improving storage space utilization. However, due to compact space, achieving multi-modal locking unlocking functionality presents significant challenges. This paper designs a new smart SMA actuator for use UAV wings. prototype testing demonstrated engineering practicality actuator. core content includes three main parts: thermomechanical actuation performance, structural design actuator, fabrication prototype. key parameters related phase transformation temperature force, were determined through DSC tensile testing. geometric kinetics kinematic analyses. Through linkage two pairs, enables both deployment wing. results folding show that, after vibration variation tests, is still able output an stroke 2.15 mm within 20 ms. integrates modes during mode transitions, offering fast response minimal requirements. It provides effective solution tailored needs system.

Language: Английский

Citations

0