摘要
研究人体在静态直立姿势下平衡动特性问题,若重心受到扰动而失衡,通常伴随由非平衡位置调回到平衡位置的过程。过程涉及神经系统和运动系统。为了简化平衡超额过程的模型,提出了一种利用SimMechanics的方法。在对人体平衡过程进行局部线性化的前提下,引入带延时的PD控制器,实现了对肢体动力学的建模以及对中枢神经系统的建模。确定了在平衡模型下人体各个参数与调节时间之间的关系以及相应的作用。通过与实际人体重心波动数据的比较,证明了改进方法的可行性与合理性。通过仿真可为人体平衡能力分析评定提供数据支撑。
When truman gravily center was out of equilibrium owing to disturbance, there will be a dynamic process to equilibrium. This process comes with neural system and motion system. In order to simulate this process well and truly, this paper provided a candidate method based on SimMechanics, where under the premise of local linearization of motion system and PD controller with time delay abstraet for neural system, we both realized the body dynamics modeling and modeling of the central nervous system. On the other hand, the model parameters were ad- justable according to the actual gender, weight and height. Through the comparison with the real gravity data, it was demonstrated that the simulating method is feasibility and rationality. At the same time, through the simulation, we can provide some data support to the human body balance capability analysis evaluation.
出处
《计算机仿真》
CSCD
北大核心
2014年第2期325-328,343,共5页
Computer Simulation
基金
河北省科技支撑计划(07212106D)
河北大学医工交叉开放基金(BM201105)
关键词
人体平衡
延时比例微分控制器
调节时间
Balance of the body
PD controller with time delay
Regulation time
