piranha32

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piranha32 got a reaction from oPossum in Hello from Washington
The project I'd like build using the launchpad is a digital rlc meter. The c2k family has two features which make it ideally suited for such job: dual channel simultaneous sampling AD converter and lots of computational power. The simultaneous sampling is important in measuring the phase shift between voltage and current. An A/D with sequential sampling would make the job much more difficult. Many such projects just look at the min/max sample values to determine the amplitude of the measured voltages and look for zerocrossing to estimate the phase. While simple to implement, such methods require high degree of oversampling to be accurate. I want to fit sinusoidal functions to the measured values and use them to estimate the parameters of the voltages and current. It requires solving of several nonlinear optimization problems, but can work well with only 45 samples per period. That's where the high MIPS power comes in handy.
I have a working proofofconcept implementation in octave, now I need to implement it on the microcontroller. I'll keep you posted on the status of the project, but don't hold your breath. It may take a while

piranha32 got a reaction from msptest6 in Hello from Washington
The project I'd like build using the launchpad is a digital rlc meter. The c2k family has two features which make it ideally suited for such job: dual channel simultaneous sampling AD converter and lots of computational power. The simultaneous sampling is important in measuring the phase shift between voltage and current. An A/D with sequential sampling would make the job much more difficult. Many such projects just look at the min/max sample values to determine the amplitude of the measured voltages and look for zerocrossing to estimate the phase. While simple to implement, such methods require high degree of oversampling to be accurate. I want to fit sinusoidal functions to the measured values and use them to estimate the parameters of the voltages and current. It requires solving of several nonlinear optimization problems, but can work well with only 45 samples per period. That's where the high MIPS power comes in handy.
I have a working proofofconcept implementation in octave, now I need to implement it on the microcontroller. I'll keep you posted on the status of the project, but don't hold your breath. It may take a while