Abstract

In our society, elderly people are one of the most vulnerable classes. At present, aging in the population is becoming a more and more serious issue. This might lead to several diseases related to aging such as Parkinson’s disease. From the viewpoint of assistive techniques, a device for disadvantaged groups should be created to lessen some of the inconveniences in their lives. Therefore, in this paper, a wearable mechanism to suppress axial vibration is proposed for people who suffer from unexpected tremors in their daily lives. Some investigations on Parkinson’s patients were carried out to infer their characteristics. A dynamic model of the gyroscopic system was then analyzed to formulate interactive torques in the working space. The control input was quantified concerning balancing the system state from the kinetic energy and using the feedback linearization technique. The framework of the proposed device was then described via mechanical analysis and prototype design. To validate the effectiveness of our approach, the system’s mathematical dynamics were simulated in a MATLAB environment. In a frequency range of 2–6 Hz, the system response adapted well to axial tremors. Our hardware in the proposed design was tested in different test scenarios such as in non-gyro- and gyro-based tremor suppression for real-world applications. Hand tremors were measured using wearable equipment with various levels of amplitude. From these results, it is clear that our method could have an effectiveness of up to 92.6%, which is considerably better than that in the non-gyro case. Hence, this innovative mechanism is expected to be employed in the fields of medical assistance, health care services, and robotics.

Highlights

  • In the era of aging populations, humankind must face a series of medical challenges

  • The desig tioned in the previous section was realized to investigate the gyroscope-based anti

  • The design mentioned in the previous section was realized to investigate the gyroscope-based anti-tremor action

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Summary

Introduction

In the era of aging populations, humankind must face a series of medical challenges. Parkinson’s disease (PD) is considered as the second most common chronic neurological disease after Alzheimer’s disease among elderly individuals. Epidemiological surveys have indicated that PD patients in China, Taiwan, the Czech Republic, France, and the UK range from sixteen to four hundred and fifty per one hundred thousand people [1,2,3,4,5]. Improved medical treatment for PD is critical for both individuals and the community. Tremors affect about fifteen percent of the population from fifty to eighty-nine years old, causing patients difficulty in daily actions such as eating, dressing, and writing [12]

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