In recent years, there has been a worldwide interest in improvement of mobility of people with lower limb amputation. In spite of significant development of new technologies during the last decade, commercial below-knee and above-knee prostheses are still energetically passive devices. However, many locomotive functions, like walking up stairs and slopes, need significant power in knee and ankle joints. The additional power for doing previously mentioned activities needs to be achieved by means of external energy sources, which should be integral prosthetic components. This paper presents preliminary investigations towards an active robotic prosthesis that could potentially enable people with an above- or below-knee amputation to perform different types of motions that require power in lower limb joints. Our initial prototype, SmartLeg, integrates advanced prosthetic and robotic technology with the state-of-the-art machine learning algorithms capable of adapting the working of the prosthesis to the optimal gait and power consumption patterns, and which therefore provide means to customize the device to a particular user
This paper describes the analysis of steel reel shaft as drive shaft in a process of umbilical spooling of wire rope. There is a need to investigate shaft behaviour in the conditions of increasing workload. The aim is to investigate avoiding possible redesign or enabling redesign with minimal costs. Stress analysis has been carried out by using finite element analysis (FEA) and results are compared with the analytically calculated values. Finite element analysis has been carried out using maximum stress criteria and the area of potential failure is found. The main objective of this paper is to find balance in results between "design by rule" and "design by analysis". Design by rule provides rules on how to design a steel reel shaft using analytical equations and other strict rules from design elements. Design by analysis provides rules on using numerical analysis, typically finite element analysis to design a steel reel shaft. The steel reel shaft has been geometrically modelled using SolidWorks. To check all stresses, linear static analysis is done using DSS Simulation and Ansys.
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