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The photovoltaic (PV) power generation systems have a variable efficiency due to mismatching conditions, such as a partial shading condition. To compensate this situation, the Maximum Power Point Tracking (MPPT) systems are used to search the operating point that results in a maximum power extraction from the PV system. Thus, the present paper proposes and analyses an alternative to the well-known...
In this paper, a new fault detection and isolation (FDI) strategy is proposed for FOC induction motor drives. Actuator faults are addressed, and specifically, open-circuit faults are considered in this study. The residual signals are synthesized by taking the resulting closed-loop dynamics when a FOC strategy is applied, i.e., the residuals are referenced to the synchronously reference frame (dqe...
The paper presents an alternative to CNC machining, based on a proposed method for creating very large and precise replicas of prototype shapes using material-removal and/or material-adding mechanisms that need not be calibrated. The method is based upon the creation of a ldquovirtual moldrdquo, which is created in the two-dimensional image planes of two or more stationary, uncalibrated cameras. The...
Current industrial robot-programming methods require, depending on the task to be developed, an elevated degree of technical ability and time from a human operator, in order to obtain a precise, nonoptimal result. This correspondence paper presents a methodology used to generate an optimal sequence of robot configurations that enable a precise point-allocating task applicable, for instance, to spot-welding,...
This paper presents aspects related to the generation and tracking of closed trajectories over an arbitrary surface of unknown geometry. Such a capacity is required in some of the most important industrial robotic tasks, like the cutting or welding of commercial plates. Previous work has shown how a calibration-free, vision-based method can be combined with an optimal geodesic-mapping approach, in...
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