Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Design of passive dynamic absorbers to attenuate pathological tremor of human upper limb
Submission Author:
Gabriel Guimarães de Souza Braga de Albuquerque , DF
Co-Authors:
Gabriel Guimarães de Souza Braga de Albuquerque, Braion Moura, Marcela Machado
Presenter: Gabriel Guimarães de Souza Braga de Albuquerque
doi://10.26678/ABCM.COBEM2023.COB2023-1292
Abstract
Tremors in the limbs are a common symptom in several neurodegenerative diseases such as Parkinson’s Disease, which can cause social discomfort and difficulties performing everyday tasks. When considering the possibility of drug allergy, the degree of invasion of the treatment, and the efficiency of the treatment, it is inevitable the use of vibration- attenuating devices stands out from the others in combating tremors in the limbs. Thus, this study aims to investigate the best configuration of mechanical vibration absorbers in suppressing tremors in Parkinson’s patients by varying the position and size of each absorber. Controller effectiveness will be analyzed regarding response magnitude and percentage of amplitude reduction in both frequency and time domains. Results indicate that using vibration-absorbing devices significantly reduces the tremor amplitude, and the best configuration was absorbers in parallel. Also, the effects of more than two absorbers in parallel along the forearm and the design of new absorbers designed to control human limb tremors are investigated. Analytical models of the arm and passive controls are used to estimate the arm’s vibration characteristics and evaluate the efficiency of the controls under three levels of pathology tremor excitation.
Keywords
Dynamic Absorber, Passive Vibration Control, Parkinson Disease
