A Class D power amplifier using multi-simultaneous-frequency selective harmonic elimination PWM generates multiple excitation frequencies simultaneously for eddy current testing, demonstrated with an FPGA prototype.
Using electromagnetic methods to monitor the transformation of steel samples,
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A Class D Power Amplifier for Multi-Frequency Eddy Current Testing Based on Multi-Simultaneous-Frequency Selective Harmonic Elimination Pulse Width Modulation
A Class D power amplifier using multi-simultaneous-frequency selective harmonic elimination PWM generates multiple excitation frequencies simultaneously for eddy current testing, demonstrated with an FPGA prototype.