Institut für Sportwissenschaft, Technische Universität Darmstadt, Magdalenenstr. 27, Darmstadt D-64289, Germany.
J Biomech. 2012 Sep 21;45(14):2472-5. doi: 10.1016/j.jbiomech.2012.06.030. Epub 2012 Jul 26.
The spring-loaded inverted pendulum (SLIP) model is a well established model for describing bouncy gaits like human running. The notion of spring-like leg behavior has led many researchers to compute the corresponding parameters, predominantly stiffness, in various experimental setups and in various ways. However, different methods yield different results, making the comparison between studies difficult. Further, a model simulation with experimentally obtained leg parameters typically results in comparatively large differences between model and experimental center of mass trajectories. Here, we pursue the opposite approach which is calculating model parameters that allow reproduction of an experimental sequence of steps. In addition, to capture energy fluctuations, an extension of the SLIP (ESLIP) is required and presented. The excellent match of the models with the experiment validates the description of human running by the SLIP with the obtained parameters which we hence call dynamical leg parameters.
弹反式倒立摆 (SLIP) 模型是描述类似人类奔跑的弹性步态的成熟模型。腿部类似弹簧的行为概念促使许多研究人员在各种实验设置和各种方式下计算相应的参数，主要是刚度。然而，不同的方法会产生不同的结果，使得研究之间的比较变得困难。此外，使用实验获得的腿部参数进行模型模拟通常会导致模型和实验质心轨迹之间存在较大差异。在这里，我们采用相反的方法，即计算允许重现实验步序列的模型参数。此外，为了捕捉能量波动，需要对 SLIP 进行扩展 (ESLIP)，并进行了介绍。模型与实验的出色匹配验证了使用所获得的参数（我们称之为动力学腿部参数）来描述人类奔跑的 SLIP 的描述。
