Abstract
Traditional swash plates generally have numerous parts, which may result in the abrasion of key parts. In this paper, to avoid the problems of traditional swash plates, a low-cost and high-reliability rotor micro-aerial vehicle integrated attitude-adjustment mechanism (IAAM) is designed based on compliant mechanism theory. The mechanism is composed of a series of curved plates and connecting convex plates. In this context, the relationship of the loads and deformations of a cantilever curved plate is analytically determined. Meanwhile, the geometrical parameters of the IAAM are optimized to the minimum mass by a genetic algorithm. The performance of the optimized IAAM is verified by finite element analysis. Modal and static analyses are performed to ensure that the mechanism meets the requirements of the flight process of the aircraft. The designed attitude adjustment mechanism reduces the complexity of the structure and installation and improves the structural reliability. Furthermore, this mechanism can be 3D printed, thus reducing production costs and improving production efficiency.
Highlights
Micro-aerial vehicles (MAVs), rotorcrafts, are becoming popular due to their ability to hover and move arbitrarily in 3D space
The relation between the load and displacement on the free end of a quarter cantilever curved plate with a uniform cross-section is derived in this paper
The optimization model of the integrated attitude-adjustment mechanism (IAAM) was built based on the derived theory, max normal stress approach, and izotropic linear elastic constitutive model
Summary
Micro-aerial vehicles (MAVs), rotorcrafts, are becoming popular due to their ability to hover and move arbitrarily in 3D space. The weight, drag, cost, and probability of failure of the mechanical components of the SP control system provide an impetus to search for alternative forms of main rotor pitch control. These SPs generally have numerous exposed linkages, bearings, push rods, and hinges. We plan to design an integrated attitude adjustment mechanism (IAAM) by considering the advantages of compliant mechanisms.
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