What is it about?
When beams undergo large deformations with small strains, the dependence of the strains on the deformation is nonlinear. We reconstruct the deformed shape of a beam as a linear combination of predefined shapes using surface strain measurements in a novel manner, which transforms the nonlinear problem into a cascade of two linear problems. The solution is very efficient, accurate and robust, with fixed computational cost; it can be easily implemented in real-time, resulting in a very effective shape sensor.
Featured Image
Why is it important?
The procedure we devised for the reconstruction of the shape is very simple and effective. It results from a specific definition of the norm of the reconstruction error that greatly simplifies the problem, turning it into a sequence of two linear problems. When applied to hingeless helicopter rotors - the practical driver of our development - it paves the way to the possibility of rather sophisticated control systems for flight dynamics, envelope protection and so on, all opportunities we intend to explore in the near future.
Perspectives
Sometimes simple solutions are there, you just need to extract them from complexity.
Professor Pierangelo Masarati
Politecnico di Milano
Read the Original
This page is a summary of: Rotor blade shape reconstruction from strain measurements, Aerospace Science and Technology, August 2018, Elsevier,
DOI: 10.1016/j.ast.2018.06.012.
You can read the full text:
Resources
Contributors
The following have contributed to this page
