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During the last few years, there has been a rise in the use of nanosatellites because they offer a low cost and short development time alternative to larger satellites intended for long-duration missions. The use of commercial components (COTS) instead of the expensive space-grade components required for long missions is one of the main reasons of the popularity of the nanosatellites. This paper presents...
In this paper, the design and implementation of an architecture implemented in a FPGA for coherent and non-coherent fast acquisition of GPS and GLONASS signals is presented. The acquisition stage has to determine the frequency deviation of the signal carrier and the delay or phase of the expansion code, due to the use of Direct Sequence Spread Spectrum as the modulation system. The hardware includes,...
Nowadays, different industrial processes use induction motors fed through variable speed drives (VSD). In order to improve these processes, the industry demands the use of smart sensors to detect the faults, reduce the cost of maintenance, and decrease power consumption. In this work, broken rotor bars, unbalance and misalignment are automatically detected in induction motors fed by a VSD using the...
The design and implementation on an FPGA of a correlation system for the American and Russian Global Positioning Systems (GPS and GLONASS) receivers are presented in this paper. This system permits processing the received signal asynchronously with the data-bits. Typically, in GPS and GLONASS receivers, correlation channels receive the samples in intermediate frequency signal, process them through...
In this paper we present the implementation of a FPGA based high data rate BPSK receiver specifically designed to withstand the high dynamics of airborne vehicles (i.e. aircraft, sounding rockets, satellites, etc.). The carrier recovery is implemented through a Costas loop, and a Gardner detector is used for the timing recovery. This architecture was chosen because it provides almost independent carrier...
In this work we present the design of an FPGA based platform for acquiring and storing signals for SDR applications. The system comprises an embedded RISC processor, an A/D converter, RAM memory chips and a DMA controller core. This last component was designed from scratch to meet the high data rate and bulk requirements. The software needed to control the system was also developed and a Graphical...
For industry, a faulty induction motor signifies production reduction and cost increase, besides, it is a hazard for people and nearby machinery. Real-world induction motors can have one or more faults at the same time, so that one faulty condition could interfere with the detection of another one, and mislead to a wrong decision about the operational condition of the motor. The detection of multiple-combined...
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