在配备反向锁定模块的手动轮椅中,基于轮胎变形的制动扭矩调节
Bartosz Wieczorek1, Łukasz Warguła1, Marcin Giedrowicz2
1Institute of Machine Design, Faculty of Mechanical Engineering, Poznan University of Technology, Poznan, Poland.
PloS one
|June 17, 2025
概括
这项研究引入了一种用于手动制动轮椅的新方法,使用轮胎变形而不是接触力. 这一创新提高了在斜坡和斜坡上航行时的安全性和稳定性.
科学领域:
- 生物力学 生物力学
- 康复工程 康复工程
- 辅助技术 辅助技术 辅助技术
背景情况:
- 手动轮椅移动面临建筑和地形障碍,特别是斜坡的挑战.
- 登坡道是艰苦的,并对轮椅使用者造成不稳定的高风险.
- 现有的制动系统通常依赖于接触力,这可能比轮胎变形不那么可靠.
研究的目的:
- 开发和验证基于轮胎变形的轮椅制动扭矩的新型调节方法.
- 建立一个测量程序,用轮胎变形来确定制动扭矩.
- 分析轮胎变形,使用者质量和制动性能之间的关系.
主要方法:
- 进行了三个实验测试:滑动力矩 (E1),制动扭矩 (E2) 和轮胎变形 (E3).
- 进行了数学分析,以模拟制动扭矩作为轮胎变形的函数.
- 差异分析 (ANOVA) 用于评估各种因素对制动扭矩的影响.
主要成果:
- 制定了一种测量程序,通过轮胎变形量化制动扭矩.
- 对于24'x1'轮子 (4-7巴压力),特定的轮胎变形与7.5Nm和12Nm的制动扭矩相关.
- 用户质量显著影响了滑动力,接触力和滚筒直径都影响了制动扭矩.
结论:
- 开发的方法准确地使用轮胎变形测量轮椅制动扭矩,模型误差为3%至7%.
- 这种基于轮胎变形的方法为手动轮椅提供了更可靠和潜在的更安全的制动解决方案.
- 这些发现有助于改进轮椅设计和用户安全,特别是斜坡导航.
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