A sensitivity analysis of the calculation of mechanical output through inverse dynamics: a computer simulation study.
A sensitivity analysis of the calculation of mechanical output through inverse dynamics: a computer simulation study.
复制标题
通过逆动力学计算机械输出的灵敏度分析：计算机模拟研究。
DOI：
10.1016/s0021-9290(00)00086-5
复制
发表时间：
2000
影响因子：
2.4
通讯作者：
S. Fukashiro
中科院分区：
文献类型：
--
作者：
A. Nagano;K. Gerritsen;S. Fukashiro
本研究的目的是系统地确定实验误差对垂直跳跃过程中用两种不同的逆动力学方法计算的功输出的影响：(A)传统的(旋转)方法和(B)平移方法。一个二维肌肉骨骼模型被用来生成精确的已知运动学。然后，将每个关节中心的位置(JC)和每个节段的质心(CM)的位置分别操纵为节段长度的±10%，以模拟关节中心定位误差(ΔJC)和节段质心位置误差(ΔCM)。随后通过将两种逆动力学方法应用于操纵的运动学数据来计算功输出。结果表明，对于ΔJC和ΔCM，反向动力学平移法的灵敏度较低(总输出功的误差最高可达13%)，而旋转方法的灵敏度最高可达28%。逆动力学的转动法对JC中的模拟误差特别敏感。
The purpose of this study was to systematically determine the effect of experimental errors on the work output calculated using two different methods of inverse dynamics during vertical jumping: (a) the conventional (rotational) method and (b) the translational method. A two-dimensional musculoskeletal model was used to generate precisely known kinematics. Next, the location of each joint center (JC) and the location of each segment's center of mass (CM) were manipulated by ±10% of segment length to simulate errors in the location of joint centers (ΔJC) and errors in the location of segment's center of mass (ΔCM), respectively. Work output was subsequently calculated by applying the two methods of inverse dynamics to the manipulated kinematic data. The results showed that the translational method of inverse dynamics was less sensitive (up to 13% error in total work output) to ΔJC and ΔCM than the rotational method (up to 28% error in total work output). The rotational method of inverse dynamics was particularly sensitive to simulated errors in JC.
影响因子：
2.4
作者：
YAMAGUCHI, GT;ZAJAC, FE
通讯作者：
ZAJAC, FE