At present,the speed of electric treadmill is controlled by manual button,which limits the freedom of chan￣ging the speed and also produces negative influence on expanding applications of the electric treadmill. This paper proposes a method of speed￣tracking control of electric treadmill which is based on human pace. By mounting force sensors under the treadmill belt,the method can obtain the force signal of foot when taking exercises on the treadmill,and the information of human pace can be acquired by analyzing the signal. It can tell the trend of the movement and send the command to drive motor at the same time. Thus,the speed of the electric treadmill changes as the speed of the human changes. The experimental results show that this control algorithm can reach a satisfying effect on speed￣tracking control,and also provides reference for the further research and technology upgrading of electric treadmill.%目前，电动跑步机的加减速都是通过手动按钮控制，制约了健身者改变速度的自由性，对于电动跑步机应用拓展也产生了诸多不利影响。本文提出了一种基于步法的跑步机速度跟踪控制方法：通过在电动跑步机跑步带下安装压力传感器，获取运动时脚底与跑步机之间的作用力信号，分析运动时的步法信息，判别人体的运动趋势，据此控制电机加速或减速，使得跑步机速度随着人体运动速度的变化而改变。实验表明，该方法能够达到预期的速度跟踪效果，可为今后的进一步研发和电动跑步机技术升级提供有益参考。
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