This paper describes the full process of modulation now: when the modulation amplitude value & gt; Triangular carrier wave amplitude, the output of the pulse signal is 1; When the modulation amplitude value & lt; Triangular carrier wave amplitude, the output pulse signal of 1,
Existing double Fourier analysis method, which can be known under the condition of modulation wave and the carrier of mathematical functions, the solution of the fundamental wave PWM waveform integer times, carrier integer times, carrier side band harmonic amplitude and phase information, but the current double Fourier series decomposition can only when solving the wave of 50 hz sine wave modulation PWM pulse double Fourier series is decomposed as a result,
Paid for help now, when the modulation wave peak by 100 10//frequency 50 hz sine wave and the peak frequency of 900 hz sine wave superposition, and peak of the triangular carrier for 120, when the frequency of 50 hz, the PWM pulse signal of the double Fourier series is decomposed as a result,
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