Pii: 0141-5425(92)90028-j
نویسنده
چکیده
Low-levelfinite state (locked-unl&e~ control is compared with open-loop stimulation of the knee extensor muscles in functional eleGtriia1 stimulation (FES) induced paraplegic standing. i%e parameters were: duration of standing, relative torque loss in knee extensor mus&s, knee angle stability, average stimulus output and average arm effort during standing. To investigate thz impact of external mechanical conditions on controlkr pelformanee, experiments were performed both under the condition of a freely moving ankh joint and of a mechanically stabilkd ankle joint. Finite state control resulted in a 2.5 to 12 times increase of standing duration or in a 1.5 to 5 times decrease of relative torque loss in comparison with open-loop stimulation. Finite state control induced a limit I+,% oscillation in the knee joint. Average maximum knee flexion was 6.2” without ankle bracing, and halfthat value with ankle bracing. Average arm support was 13.9 and 7.5% of the body weight without and with ankle bracing respectively.
منابع مشابه
Pii: 0141-5425(92)90058-s
A clinical model ofglucose-insulin interaction in insulin-dependent diabetes mellitus has been developedforpatient and medical staff education. The model attempts to reflect the underlying (pathojphysiology of insulin action and carbohydrate absorption in quantitative terms such as insulin sensitivity, volume ofglucose and insulin distribution and maximal rate ofgastric emptying. The model's pr...
متن کاملPii: 0141-5425(84)90007-4
Automated blood pressure measurements are usually characterized by poor operational reliability and a considerable degree of complexity in performing the measurement. This paper introduces a new technique for the indirect measurement of the systolic and diastolic blood pressure of an individual. The technique is based upon a statistically consistent relationship between the amplitude of the pul...
متن کاملA multiprocessor system for visual communications using distributed transputer arrays
A'transputer-based multiprocessor system for visual communication applications is presented. H.261, the encoding/decoding standard for video telephones recommended by CCITT, is implemented in this system for demonstration. Fundamental video processing operators, such as 3 x 3 discrete Laplacian, are also implemented. Up to 20.4 frames per second (fps) video replaying rate and about 7.2 fps proc...
متن کامل