食指掌指关节的正向动力学分析  

Forward dynamics analysis of the metacarpophalangeal joint of the index finger

作　　者：杨年峰[1] 黄昌华[1] 李波[1] 王人成[1] 

机构地区：[1]清华大学精密仪器与机械学系,北京100084

出　　处：《清华大学学报（自然科学版）》2000年第4期28-31,共4页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金项目!(59905015);科技部重点攻关项目!(96-920-20-14)

摘　　要：为探讨运动生物力学建模与分析的基础性问题 ,以食指为研究对象建立了包含神经兴奋 -肌肉收缩动力响应和肌肉 -肌腱动力特性在内的食指掌指关节正向动力学模型 ,并针对该关节快速屈曲 6 0°的运动过程 ,采用参数最优化方法进行了模拟计算。模拟结果表明 ,在快速屈曲过程中 ,食指短时平均角速度近似为匀速 ,瞬时角速度呈现阻尼振荡形式。Some basic research issues of biomechanics modeling and analysis were discuissed using a forward dynamics model of the metacarpophalangeal (MCP) joint of the index finger, which combines musculotendon dynamics and muscle excitation contraction dynamics. The model numerically analyzes the 60° angular fast flexion of the MCP joint of the index finger using the optimal control theory. The result shows that during a fast flexion the short time average angular speed is nearly constant, but the instantaneous speed appears to be a fluctuation wave. This model provides a basic analysis tool for the simulation of MCP joint movement including the neural control signals and is of further significance for analyzing the mechanism for redundant movement control of the human hand.

关 键 词：肌骨生物力学 人手运动 掌指关系 神经控制 

分 类 号：R318.01[医药卫生—生物医学工程]