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The capabilities of robotic gait assistive devices are ever increasing; however, their adoption outside of the lab is still limited. A critical barrier for the functionality of these devices are the still unknown mechanical properties of the human leg during dynamic conditions such as walking. We built a robotic knee exoskeleton to address this problem. Here, we present the effects of our device on...
This paper will present a method to fast-prototype a Battery Management System (BMS) using a model-based approach. Such an approach involves creating mathematical models of the battery as well as the high-voltage electronic components. The models are then used, along with typical driving profiles, within an offline simulation frame work called BMSSim to understand and test the dynamic effects of the...
This paper presents the analytical model of a DC-motor actuated active-knee transfemoral prosthesis operating within the mechanically dissipative but electrically regenerative region of the knee actuator's performance space. A switching-based control scheme is developed that enables damping control within the limb's regenerative region of operation. This control approach allows the limb to realize...
The costs of armyworm control in candidate outbreak source areas in Ethiopia, Kenya and Tanzania were compared with estimates of the costs of potential damage if these source outbreaks were not controlled. The latter costs were estimated using a modelling approach, taking account of known moth migration trajectories, their frequency of occurrence, and of the agricultural productivity of potential...
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