摘要
目前的大鼠减重训练实验跑台多采用弹簧一端固定的减重模式,由于该减重模式下大鼠重心的上下浮动会引起弹簧力的周期性变化,这种周期性变化的冲击力会对大鼠造成二次伤害。因此,本研究提出了一种弹簧两端均可自由伸缩的动态减重模式,保证了减重力在很小的范围内波动,为开展大鼠步行训练实验提供先进的实验平台。首先,利用Solidworks软件进行跑台三维模型的建立,并用ANSYS软件对跑台的主要零件进行静力学分析,验证了跑台结构的稳定性。其次,通过动态减重控制系统的PID控制算法获取大鼠步行训练过程中的减重值并进行弹簧伸长量的实时调节,以减小系统减重值的波动,同时利用跑步机控制系统对跑带进行速度调整和采集。最后,对大鼠进行步行训练实验,验证了该大鼠减重训练实验跑台的有效性。
Since the current rat body weight support training experimental treadmill mostly adopts the body weight support(BWS)model with one end of the spring fixed,the fluctuation of the gravity center of rats under the weight support mode would cause periodic changes of the spring force,which would cause secondary damage to rats.Therefore,a kind of dynamic body weight support mode in which both ends of the spring can be freely stretched had been proposed,which could guarantee the weight loss fluctuated within a very small range and provide an advanced experimental platform for the development of rats walking training experiments.Firstly,Solidworks software had been used to build the 3D model of the treadmill,and ANSYS software had been used to perform static analysis on the main components of the treadmill to verify the stability of the structure of the treadmill.Secondly,the PID control algorithm of dynamic body weight support control system had been used to obtain the body weight values and adjust the elongation of the spring in the training process in real time,to reduce the fluctuation of system weight loss values,and the treadmill control system had been used to adjust and collect the speed of the running belt.Finally,the effectiveness of the treadmill had been verified by the experiments of walking training in Sprague-Dawley Rats.
作者
李肖
甘畅
谭家浩
蒯波
LI Xiao;GAN Chang;TAN Jiahao;KUAI Bo(School of Mechanical Engineering Hubei University of Technology,Hubei Wuhan 430068,China;School of Artificial Intelligence and Automation Huazhong University of Science and Technology,Hubei Wuhan 430074,China;School of Industrial Design Hubei University of Technology,Hubei Wuhan 430068,China)
出处
《机械设计与制造》
北大核心
2024年第12期347-354,共8页
Machinery Design & Manufacture
基金
国家自然科学基金(52005169)
湖北工业大学博士科研启动基金(BSQD2019007)。
关键词
动态减重
PID控制算法
静力学分析
步态康复训练
Dynamic Body Weight Support
PID Control Algorithm
Statics Analysis
Gait Rehabilitation Training
