Micro Unmanned Aerial Vehicles (MUAV) must calculate its spatial position to control the flight dynamics, which is
done by Inertial Measurement Units (IMUs). MEMS Inertial sensors have made possible to reduce the size and power
consumption of such units. Commonly the flight instrumentation operates independently of the main processor. This
work presents an instrumentation block design, which reduces size and power consumption of the complete system of a
MUAV. This is done by coupling the inertial sensors to the main processor without considering any intermediate level of
processing aside. Using Real Time Operating Systems (RTOS) reduces the number of intermediate components,
increasing MUAV reliability. One advantage is the possibility to control several different sensors with a single
communication bus. This feature of the MEMS sensors makes a smaller and less complex MUAV design possible.
KEYWORDS: Solar cells, Solar energy, Solar radiation models, Unmanned aerial vehicles, Resistance, Data modeling, Crystals, Photovoltaics, Silicon, Sun
The implementation of a photovoltaic and an electronic module that manages the energy improves the flight time and the
autonomy performance in an UAV. The module consists in a device that tracking the maximum power point of PV
module by a PWM current-voltage regulation to charge a Li-Po battery. Characterization and modeling of crystalline and
amorphous solar cells has been made. Our simulation estimates speed of battery charge. As a result, we increase the
autonomy of the battery charge which is reflected in a UAV that performs tasks in fewer flights and without human
supervision.
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