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This paper presents a digital motion controller of an electric wheelchair by using a low-cost real-time microcontroller unit (MCU) and an own developed power electronic drive. The speed control of the wheels is implemented through a digital pulse-width modulation technique which is varying with the reference generated by a low-cost joystick. Voltage regulators and power converters are implemented...
This article analyzes the data mining techniques to get the evapotranspiration variable (ETo) in order to control the irrigation system in green houses to optimize resources such as water and fertilizers. The methods used are the Maximum Expectation algorithm (EM) and the neuronal network base radial; such methods estimate the environmental variable from historical data such as: the temperature and...
This paper presents the digital implementation of a double-loop feedback controller for speed and current regulation on a permanent-magnet direct current servo motor based on the real-time microcontroller TMS320F28335. The topology of the controller is based on a cascade control scheme; the speed controller (external loop) sets the reference of the current controller (internal loop). In this way,...
Today, it is common the use of a static power converters to adapt the available energy from a clean source to feed an electrical load. Wind energy conversion systems have become one of the principal areas of research on renewable energies. This research has permitted the development of different topologies and control strategies of power converters to be used on wind energy extraction. This paper...
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