Design of Portable Electrical Stimulator for Multi-channel Functional Electrical Stimulation ( FES)

Fundamental research about Functional Electrical Stimulation (FES) indicates that FES could be used to restorate motor system of patient experiencing damage at arrangement of central nerve resulted from cerebrospinal of cord injury (SCI) and also stroke. Operation of human body organ impulse activated by FES is difficult and very complex because of nonlinearity from response neuro-muscular system, various from response musculo-skeletal system to electrical stimulation, time delay which is long, and fatigue phenomenon (muscle fatigue). Therefore, to overcome obstacle in operation of FES hence closed loop control applied to yield accurate impulse. For the application of closed-loop control at level klinis, FES system must be designed multi-channel and portable that patient feels balmy. The realized FES stimulator was a boost converter with duty cycle 90%, because it yielded relatively linear and higher output voltage. Keyword: Functional Electrical Stimulation, closed loop control, boost converter Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}