基于油阻的等速肌力康复训练设备的设计与验证

Design and Verification of Isokinetic Muscle Strength Rehabilitation Training Equipment Based on Oil Resistance

设计一种基于油阻的等速肌力康复训练设备。首先,通过位移传感器检测运动过程中关节角度,实现角速度实时测量;然后,根据设定速度与实测速度的偏差,基于PID算法控制比例阀通流面积,实现流动阻力调节和等速运动;另外,还通过力敏传感器采集运动过程中肌肉力量,实现肌力实时精准评估。开展了等速运动的初步验证,结果表明峰力矩测试均值误差不超过5%,且相关性r=0.89~0.92(P<0.05)。因此,该设备具有较好的等速肌力训练功能,对于开展低成本等速肌力康复训练有重要价值。

This study designed an isokinetic muscle strength rehabilitation training equipment,based on oil resistance.The equipment detected joint angles during movement through displacement sensors to measure the angular velocity in real-time.Then it can achieve flow resistance adjustment and constant velocity movement,based on the flow area of the proportional valve calculated by PID algorithm and the deviation between the set speed and the measured speed.The equipment can also collect muscle strength during exercise through force-sensitive sensors to achieve real-time and accurate assessment of muscle strength.Moreover,the study preliminarily certificated the isokinetic motion the results showed that the mean error of peak torque test is less than 5%,and the correlation is between 0.89 and 0.92(P<0.05).Therefore,the device has an accurate isokinetic muscle training function,which is of great value for developing low-cost isokinetic muscle rehabilitation training.