SBIR Phase I: PiezoElectric Actuation System for Upper Limb Prosthetics

SBIR 第一阶段：用于上肢假肢的压电驱动系统

• 批准号: 0741147
• 负责人: Edwin Iversen
• 金额: --
• 依托单位: MOTION CONTROL, INC.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-01-01 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0741147&HistoricalAwards=false
• 关键词: SBIR; Phase; PiezoElectric; Actuation; System

This Small Business Innovation Research Phase I project develops a new technology for prosthetic arm components, using a lightweight piezoelectric actuator. A piezoelectric actuator will be developed to drive a prosthetic hand. Available arm prostheses have up to three powered degrees-of-freedom, but are sometimes considered too heavy and noisy for their disabled wearers. Lightweight and quiet piezoelectric actuators offer power-to-weight ratios that are over twice that of electromagnetic actuators, and lower the noise of the device. Furthermore, the intrinsic back-lock of a piezoelectric actuator eliminates the need for a mechanical back-lock, which maintains pinch force when the drive is stopped. The broader impacts of this research are the application of these actuators to other prosthetic components for those experiencing the loss of upper limb (a population of over 100,000 Americans). At this time, an estimated 2,000 electric prostheses are fitted each year in the U.S. alone, with equivalent numbers in Western Europe. The improvements offered with this new motor technology could increase this market greatly, making contributions to the independence and functionality of this disabled population.

这个小型企业创新研究第一阶段项目开发了一种使用轻量级压电致动器的假肢部件的新技术。将开发一种用于驱动假手的压电致动器。现有的手臂假体最多有三个动力自由度，但有时被认为对残疾佩戴者来说太重和噪音太大。轻便安静的压电致动器提供的功率重量比是电磁致动器的两倍以上，并降低了设备的噪音。此外，压电致动器的固有后锁消除了对机械后锁的需要，机械后锁在驱动停止时保持夹紧力。这项研究的更广泛影响是将这些致动器应用于其他假肢部件，供那些经历上肢丧失的人(超过10万美国人)使用。目前，仅在美国，估计每年就有2000个电动假体安装，西欧的数字与之相当。这种新的电机技术带来的改进可以极大地增加这一市场，为这一残疾人的独立性和功能性做出贡献。