Purpose: Based on the analysis of existing solutions, biomechanics of human lower limbs and anticipated applications, results of considerations concerning the necessary number of degrees of freedom for the designed device supporting rehabilitation of lower extremities are presented. An analysis was carried out in order to determine the innovative kinematic structure of the device, ensuring sufficient mobility and functionality while minimizing the number of degrees of freedom. Methods: With the aid of appropriate formalised methods, for instance, type synthesis, a complete variety of solutions for leg joints were obtained in the form of basic and kinematic schemes, having the potential to find application in devices supporting lower limb rehabilitation. Results: A 3D model of ankle joint module was built in Autodesk Inventor System, then imported to Adams and assembled into a moving numerical model of a mechanism. Several conducted simulations resulted in finding the required maximum stroke of the cylinders. Conclusions: A comparison of the angular ranges of ankle joint and similar devices with the ones achieved by the designed device indicated a sufficient reserve allowing not only movements typical of gait, but approximately achieving the passive range of motion for the ankle joint.
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Przedstawiono multimedialny kurs projektowania trójwymiarowego w programie AutoCAD 2008 PL. Prezentowana aplikacja zawiera objaśnienia i podpowiedzi, które aktywizują użytkownika podczas poznawania podstaw projektowania przestrzennego. Dzięki elementom multimedialnych animacji charakteryzuje się dynamizmem w zapoznawaniu użytkownika z poszczególnymi procedurami oraz poleceniami do modelowania 3D. Kurs zawiera treści dydaktyczne i polecenia programowe wykonane w języku HTML z zagnieżdżonymi animacjami typu "Macromedia Flesh". Dzięki temu nadaje się do zamieszczenia w sieci internetowej do nauczania zdalnego, jak również tradycyjnego.
EN
The article presents a multimedia based three-dimensional design training course with use of AutoCAD 2008 PL software. Included in the application are explanations and prompts intended to activate the user for exploration of the three-dimensional design work essentials. The course is noted for high dynamics of the multimedia animation in the process of making the user acquainted with particular procedures and tree-dimensional modelling commands. This training course consists of didactic matter and programme commands in HTML language with integrally connected Macromedia Flesh animation. It is thus, properly adopted for location in the Internet for both e-learning as well as for conventional education.
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