Active tremor control in human-like hand tremor using fuzzy logic

Abstract

<span>Tremor<span>is the vibration in sinusoidal orientation that is experienced regularly by a person with Parkinson’s disease (PD), which disturbs their daily activities. One solution that may be used to counter this tremor effect is by developing an active tremor control system in LabVIEW for linear voice coil actuator (LVCA), where the system uses proportional (P) controller and various types of fuzzy logic controller (FLC) as a hybrid controller to reduce tremor vibration. From this research, it can be concluded that the best controller for tremor reduction is the P+FLC 1<sup>st</sup> set of rules, compared to P+FLC 2<sup>nd</sup> set of rules, and P controller only, with the highest percentage of 88.39% of tremor reduction with the actual tremor vibration of PD patients as the reference result. The P+FLC 2<sup>nd</sup> set of rules has the highest percentage of tremor reduction with a value of 86.81%, whereas P controller only has the highest tremor reduction percentage of 67.10%. This percentage of tremor reduction is based on the power spectral density (PSD) values, in which it represents the intensity of the tremor vibration. This experimental study can be used as an initial step for researchers and engineers to design and develop an anti-tremor device in the future.</span></span>

Atenuação do Sinal de Tremores nas Mãos: uma Análise Comparativa de Algoritmos Adaptativos

“…Van e Ngo conceberam um dispositivo vestível baseado em giroscópio, posicionado nas costas da mão do usuário, obtendo resultados de simulações com uma eficácia de 92,6% na redução dos tremores em [11]. Além dessa, uma solução para controlar os tremores nas mãos de pessoas com doença de Parkinson, fazendo uso de controladores proporcional e de lógica fuzzy foi apresentado em [12]. Testes com uma mesa agitadora orbital 1 e acelerômetro demonstraram uma redução de até 88,39% nos tremores ao transferir um sinal para um atuador na palma da mão.…”