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___________人體下肢三擺多自由度模型_________

Three pendulums multi-degree of freedom model for human lower-limb

作者:               姜海波          
單位:           姜海波。E-mail:[email protected]    
關(guān)鍵詞:           多剛體;動力學(xué);人體下肢;三擺      
分類號:
出版年·卷·期(頁碼):2013·32·3(272-275)
摘要:

目的 多數(shù)人體下肢運動方程在處理簡單問題時存在過于復(fù)雜的問題。方法 本文基于多剛體系統(tǒng)原理,將人體下肢系統(tǒng)簡化為三擺多自由度模型,利用拉格朗日函數(shù)和哈密頓定理推導(dǎo)出人體下肢系統(tǒng)的動力學(xué)方程。結(jié)果 以人體測量學(xué)數(shù)據(jù)為依據(jù)進行模擬計算,將模擬計算得到的人體下肢各部分的運動參數(shù)與通過實測得到的人體下肢數(shù)據(jù)進行比較后發(fā)現(xiàn),二者在絕大多數(shù)指標(biāo)上較為相似。結(jié)論 說明推導(dǎo)出的方程具有一定的準(zhǔn)確性,可以對人體下肢系統(tǒng)的運動特性進行簡單的趨勢分析和低精度計算。

Objective Most of the motion equations for human lower-limb are excessively complex in simple problems. Methods Based on multi-body system theory,the human lower limb system is simplified as a three pendulums multi-degree of freedom model in this paper. And one dynamics equation for human lower-limb system is deduced by using Lagrange function and Hamilton theorem. Results Anthropometric data as the basis for the simulation,the motion parameters of the simulation for human lower limbs and the actually measured data are compared. The two groups of data are similar in most of the index. Conclusions The accuracy of the deduced equation is good,and can be used in simple trend analysis and low accuracy calculation for the movement characteristics of human lower-limb system.

參考文獻(xiàn):


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