Design and analysis of human arm pathological tremor simulation system.
10.7507/1001-5515.202412025
- Author:
Zixin HE
1
;
Haiping LIU
1
;
Qingsheng LIU
1
;
Yu JIANG
2
;
Zhu ZHU
3
Author Information
1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China.
2. Department of Orthopaedics, Peking University Third Hospital, Beijing 100191, P. R. China.
3. School of Mechanical Engineering, North University of China, Taiyuan 030051, P. R. China.
- Publication Type:Journal Article
- Keywords:
Arm model;
Joint response;
Pathological tremor;
Two degrees of freedom
- MeSH:
Humans;
Tremor/physiopathology*;
Computer Simulation;
Arm/physiopathology*;
Joints/physiopathology*;
Biomechanical Phenomena;
Upper Extremity/physiopathology*;
Models, Biological
- From:
Journal of Biomedical Engineering
2025;42(4):790-798
- CountryChina
- Language:Chinese
-
Abstract:
In order to characterize the characteristics of pathological tremor of human upper limb, a simulation system of pathological tremor of human arm was provided and its dynamic response was analyzed. Firstly, in this study, a two-degree-of-freedom human arm dynamic model was established and linearized according to the arbitrary initial angle of joints. After solving the analytical solutions of steady-state responses of the joints, the numerical solution was used to verify it. The results of theoretical analysis show that the two natural frequencies of the developed dynamic model are 2.9 Hz and 5.4 Hz, respectively, which meet the characteristic frequency range of pathological tremors. Then, combined with the measured parameters of human arm, a tremor simulation system was built, and the measured results of joint responses are in good agreement with the theoretical and simulation analysis results, which verifies the effectiveness of the theoretical model. The results show that the human arm pathological tremor simulation system designed in this paper can characterize the frequency and response amplitude of the human upper limb pathological tremor. Moreover, the relevant research lays a theoretical foundation and experimental conditions for the subsequent development of wearable tremor suppression devices.
