An EMG Feedback Control Functional Electrical Stimulation Cycling System

The prevalence of stroke and its residual disability is getting higher and higher in the whole world population. The functional electrical stimulation cycling system (FES-CS) is useful for hemiplegic patients to make the muscles of stroke patients be under hybrid activation. The raw electromyography (EMG) takes down the residual muscle force of stroke subjects; and the peak-to-peak of stimulus EMG indicates the force enhancement benefiting from electrical stimulation. This research proposed an EMG feedback control protocol of FES-CS, which includes a physiological signal recorder, a FPGA control module, DAC and electrical stimulation circuits. Using the strength of real-time EMG signal obtained from patients as a feedback to control the stimulation output intensity of FES cycling system.