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Träfflista för sökning "(hsv:(MEDICIN OCH HÄLSOVETENSKAP) hsv:(Medicinsk bioteknologi) hsv:(Annan medicinsk bioteknologi)) srt2:(1995-1999)"

Sökning: (hsv:(MEDICIN OCH HÄLSOVETENSKAP) hsv:(Medicinsk bioteknologi) hsv:(Annan medicinsk bioteknologi)) > (1995-1999)

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1.
  • Berbyuk, Viktor, 1953 (författare)
  • Dynamics and optimal control of biotechnical systems "Man-Prosthesis"
  • 1997
  • Ingår i: IUTAM Symposium on Interaction Between Dynamics and Control in Advanced Mechanical Systems, Ed. D. van Campen, Kluwer Academic Publishers, 1997. - Dordrecht : Springer Netherlands. ; , s. 35-42
  • Konferensbidrag (refereegranskat)abstract
    • In the paper, a mathematical model is proposed for investigating the controlled motion of human locomotion system (HLS) with an above-knee prosthesis. To provide insight into the interaction between dynamics and control in biotechnical system Man-Prosthesis the energy­ optimal control problem of the HLS wearing a lower limb prosthesis has been con­sidered. The algorithm is based on special conversion of the optimal control problem for a nonlinear dynamical system which models HLS into a standard nonlinear programming problem. A number of energy-optimal control problems of hu­man locomotion with an artificial leg, and optimization problems for the constructive parameters of the prostheses under different boundary conditions and constraints have been solved. The numerical results obtained were compared with experimental data for normal human locomotion. The energy-optimal elastic and viscoelastic characteristics of the ankle and knee joints of the prostheses have been determined.
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2.
  • Berbyuk, Viktor, 1953 (författare)
  • Multibody systems modeling and optimization problems of lower limb prostheses
  • 1996
  • Ingår i: 1996 IUTAM Symposium on Optimization of Mechanical Systems. - Dordrecht : Springer Netherlands. ; , s. 25-32
  • Konferensbidrag (refereegranskat)abstract
    • To study the effect of prosthesis design on the kinematic, dynamic, energetic and other characteristics of an amputee's locomotion and to improve and create new efficient lower limb prostheses it is expendient to use mathematical modeling of a human walk process and dynamic optimization techniques. In this paper a mathematical model is proposed for investigating the dynamics of a man's skeletal system (MSS) with a below-knee prosthesis. A MSS is simulated by a plane controlled dynamic system of rigid masses. The controlled motions of the system are described by Lagrange's equations of the second kind, and for the expressions for ki­neto-static balance of the prosthesis under the action of ankle and metatarsal moments and the forces of reactions are derived. An algorithm is construced for solving the pro­blem of human gait dynamics with a below-knee prosthesis. The series of dynamics pro­blems for multibody biothechnical system "Man-Prosthesis" and optimization of struc­tural parameters of the artificial lower extremity of a man has been solved.
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  • Resultat 1-2 av 2
Typ av publikation
konferensbidrag (2)
Typ av innehåll
refereegranskat (2)
Författare/redaktör
Berbyuk, Viktor, 195 ... (2)
Lärosäte
Chalmers tekniska högskola (2)
Språk
Engelska (2)
Forskningsämne (UKÄ/SCB)
Teknik (2)
Medicin och hälsovetenskap (2)
Naturvetenskap (1)

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