3-electrode sensing system 2 Integrated circuit design 2 Analog modules 1 Analog to digital conversion 1 Analog to digital converters 1 CMOS technology 1 Closed-loop FES 1 Computer circuits 1 Computer hardware description languages 1 Controllers 1 Data acquisition 1 Embedded systems 1 FPGA 1 Feedback control 1 Field programmable gate arrays (FPGA) 1 Functional electric stimulation 1 Functional electrical stimulation 1 Functional electrical stimulator (FES) 1 Fuzzy logic 1 Fuzzy logic controller (FLC) 1 Fuzzy logic controllers 1 Hardware description language (HDL) 1 Integrated circuit manufacture 1 Integrated circuits 1 Interfacing circuits 1 Joints (anatomy) 1 Knee extension 1 Linear systems 1 MATLAB 1 Mentor Graphics 1