基于脑-机接口的康复辅助机械手控制

The control on the artificial limb based on brain-computer interface

目的:研究一种基于脑-机接口技术的康复辅助机械手运动的控制方法,并论证其可行性。方法:构建基于脑-机接口的控制系统框架。通过基于稳态视觉诱发电位构造的脑-机接口获取控制指令,通过可编程逻辑控制器(PLC)控制机械手完成规划的动作。结果:实现了利用稳态诱发脑电控制多自由度机械手完成倒水动作的过程。结论:通过脑-机接口技术控制康复辅助机械手进行复杂运动是一种可行的方法,这种新的控制方法可以应用于残疾人对假肢的控制。

Objective:To study the control method of a mechanical assistant limb based on brain-computer interface (BCI) and to demonstrate the feasibility of this method. Method: To build up a framework of control system based on BCI. We could obtain dictates in the steady-state visual evoked potential(SSVEP) and can control the spatial movement of the artificial limb through a programmable logic controller(PLC). Result: The water-pouring movement of the mechanical limb was successfully controlled by BCI and PLC. Conclusion:It is a feasible method to control the complicated motion of the assistant artificial limb with BCI. This new approach could be applied to handicapped persons.Author′s address Dept. of Biomedical Engineering, Tsinghua University, Beijing, 100084