Next Article in Journal
Fixture Optimization in Turning Thin-Wall Components
Previous Article in Journal
Overcoming the Challenges for a Mass Manufacturing Machine for the Assembly of PEMFC Stacks
Open AccessArticle

Design and Testing of a 3-DOF Robot for Studying the Human Response to Vibration

1
Dipartimento di Meccanica, Politecnico di Milano, via Previati 1/C, 23900 Lecco, Italy
2
School of Industrial and Information Engineering, Politecnico di Milano, Via Raffaele Lambruschini, 15, 20156 Milano, Italy
3
Dipartimento di Ingegneria Industriale e dell’Informazione, Università di Pavia, Via ferrata 5, 27100 Pavia, Italy
*
Author to whom correspondence should be addressed.
Machines 2019, 7(4), 67; https://doi.org/10.3390/machines7040067
Received: 22 August 2019 / Revised: 24 October 2019 / Accepted: 26 October 2019 / Published: 30 October 2019
This work describes the design and validation of an electro-mechanical excitation system for characterization of the response of the human body to multiaxial vibrations. The presented system is based on the linear delta configuration and is designed to expose standing subjects to vibration along three perpendicular axes, with an excitation bandwidth of at least 30 Hz and a maximum vibration amplitude of ±30 mm along the vertical direction and ±20 mm along the horizontal directions. The shaker characteristic dimensions are the result of numerical optimization of the inverse manipulability index; the motors and transmissions have been selected using a multibody dynamic simulation. Finite element simulations were performed to ensure that the structural resonances were outside the excitation bandwidth. Once the shaker had been manufactured, experiments were performed to verify the capability of the system in real testing conditions. The mean quadratic error between the modulus of the imposed acceleration and the measured one is between 5.7 × 10−3 and 1.4 × 10−2 m/s2 in the frequency range between 1 and 50 Hz, proving the good outcome of the design process. View Full-Text
Keywords: whole-body vibration; 3D shaker; apparent mass; multiaxial vibration; linear delta whole-body vibration; 3D shaker; apparent mass; multiaxial vibration; linear delta
Show Figures

Figure 1

MDPI and ACS Style

Marzaroli, P.; Albanetti, A.; Negri, E.; Giberti, H.; Tarabini, M. Design and Testing of a 3-DOF Robot for Studying the Human Response to Vibration. Machines 2019, 7, 67.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop