Characteristics of Air Bag Haptic Feedback Unit for Stroke Rehabilitation

ZHANG Chaozhou; LI Min; WU Zonglin; HE Bo; XIE Jun; XU Guanghua

doi:10.7652/xjtuxb202306001

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Characteristics of Air Bag Haptic Feedback Unit for Stroke Rehabilitation

更新时间：2025-05-08

- Characteristics of Air Bag Haptic Feedback Unit for Stroke Rehabilitation
- Vol. 57, Issue 6, Pages: 1-9(2023)
- 作者机构：
  
  1. 西安交通大学机械工程学院,西安,710049
  2. 西安交通大学机械制造系统工程国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202306001
  CLC： TP203
- Online First：10 June 2023，
  
  Published：2023
- 稿件说明：
移动端阅览
ZHANG Chaozhou, LI Min, WU Zonglin, et al. Characteristics of Air Bag Haptic Feedback Unit for Stroke Rehabilitation[J]. 2023, 57(6): 1-9.
DOI：

ZHANG Chaozhou, LI Min, WU Zonglin, et al. Characteristics of Air Bag Haptic Feedback Unit for Stroke Rehabilitation[J]. 2023, 57(6): 1-9. DOI： 10.7652/xjtuxb202306001.

摘要

针对现阶段气袋式触觉反馈装置难以准确呈现交互效果及同时表征触觉力和触觉面积的问题

开展了气动触觉单元的静态特征和动态特征研究。依据气动触觉单元的几何约束条件建立了静态压力分布模型

类比电路电容放电模型构建了动态压力响应模型。制作了3种规格的气袋触觉单元并进行了特征实验测试

结果表明

静态压力分布模型的拟合触觉面积误差为6.94%

中型气袋(14.4 cm×9.4 cm)及以下规格的气动单元响应时间在0.5 s以内。采用中型气袋搭建了躯干触觉反馈系统

并进行了触觉感知实验

通过调节充气限制高度以表征不同的触觉面积

通过改变气袋气压大小以表征不同的触觉力。实验结果表明

被试者对其产生的触觉面积和触觉力感知识别率分别为87.25%和89.67%。气袋式触觉反馈单元特性研究为触觉反馈装置的设计参数选择提供了依据

可以使脑卒中患者在康复训练中快速感受到触觉面积和触觉力

从而提高患者的康复训练体验。

Abstract

Considering that existing air bag haptic feedback devices cannot accurately present the interaction effect and represent the haptic force and haptic area at the same time

the static characteristics and dynamic characteristics of the pneumatic haptic unit were studied. The static pressure distribution model was established based on the geometric constraints of the pneumatic haptic unit

and the dynamic pressure response model was developed by analogy with the circuit capacitive discharge model. Three types of air bag haptic units were produced

and the characteristics tests were carried out. The results showed that the fitted haptic area error of the static pressure distribution model was 6.94%

and the response time of pneumatic units of medium-sized air bag(14.4 cm×9.4 cm)and below was within 0.5 s. A torso haptic feedback system was developed using the medium-sized air bag

and haptic perception experiments were carried out as well. Different haptic areas were represented by adjusting the height of the inflation limit

and different haptic forces were represented by changing the air pressure of the air bag. The results showed that the recognition rates of haptic area and haptic force were 87.25% and 89.67%

respectively. The study on characteristics of air bag haptic feedback unit for stroke rehabilitation provides a basis for the selection of design parameters of the haptic feedback device which can enable stroke patients to quickly perceive the haptic area and haptic force during rehabilitation training to improve the rehabilitation training experience of patients.

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references

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