壓縮包內(nèi)含有CAD圖紙和說(shuō)明書,均可直接下載獲得文件，所見所得，電腦查看更方便。Q 197216396 或 11970985
摘要
目前擬人假肢普遍采用多指靈巧手的設(shè)計(jì)思想，利用電機(jī)、電子和傳感器等領(lǐng)域的最新技術(shù)成果，實(shí)現(xiàn)假手的多自由度和多感知，從而最大程度地提高假手的靈活性和可操作性。但是，從生物／機(jī)械系統(tǒng)接口技術(shù)的研究現(xiàn)狀來(lái)看，基于殘余臂EMG(肌電)信號(hào)的運(yùn)動(dòng)解碼器對(duì)于手的運(yùn)動(dòng)模式識(shí)別功能十分有限且識(shí)別率低，利用EMG信號(hào)控制多指手這樣的靈巧操作機(jī)構(gòu)各驅(qū)動(dòng)單元的協(xié)調(diào)運(yùn)動(dòng)在技術(shù)上難以實(shí)現(xiàn)；并且，多自由度靈巧手由于驅(qū)動(dòng)單元過(guò)多，重量較重，也很難被市場(chǎng)接受。
為了解決上面的問(wèn)題，本文設(shè)計(jì)并開發(fā)了一種新型的欠驅(qū)動(dòng)肌電機(jī)械手。仿人假肢手由4個(gè)電機(jī)驅(qū)動(dòng)15個(gè)關(guān)節(jié)，克服了現(xiàn)有技術(shù)中手指靈活度不夠的缺點(diǎn)，減小了功耗，利于機(jī)械手的小型化。該手對(duì)于不同的抓取物體具有良好的形狀適應(yīng)性，且在部分手指運(yùn)動(dòng)受限的情況下具有理想的力分配特性。
本文描述該假手的具體設(shè)計(jì)與機(jī)構(gòu)組成，介紹了其兩大主要?jiǎng)?chuàng)新點(diǎn)：一是彈性交叉四連桿手指，二是指間差動(dòng)機(jī)構(gòu)。
ABSTRACT
Nowadays lots of human prosthetic hands are designed; they all followed the idea of the dexterous hands, which using high performance motors, sensors or other new technology to get more freedom or feeling. However the more motors are deployed, the more requirements to the bio-mechanical interface and the power will be higher. Because of the limitations of biological/mechanical interface technology, most of the prosthetic hands are low dexterousness and functionality, and with high weight, these kinds of hands are unaccepted by the market.
In order to resolve the problem, a prototype of underactuated prosthetic hand is designed and developed. The hand has 15 revolute joints, actuated by 4 motors. The hand is more dexterous, more energy solving and smaller size. It can grasp different objects, like the mobile phones, the books, the bottles, the pingpong balls and etc, and has the good force distribution capability.
This thesis introduces two main innovative structures: first One is underactuated finger; another is a miniature differential mechanism which is embedded inside the palm of the hand to control the differential motion of the two fingers.