FRA-V2 (in Qspice) with faster and more accurate implementation.
Key update features are:
- Automatic steady-state detection to cut down the time between system reaching SS until perturbation is applied.
- Improved Fourier Series accuracy (esp. at high frequency) which is implemented by using Quasi-Log scale perturbation frequency range. Basically, an iterative algorithm for injection frequency selection is added to ensure that the relation between Finj and Fsw is following this rule [N/Finj = M/Fsw] with both N and M integer. This simple approach helps to suppress the measurement artifact from Fsw ripple onto the Finj signal by ensuring there is a M-complete periods of Fsw noise in the duration of fourier analysis which causes the noise to be self-canceling.
- The simulation result is no longer saved to .csv file (at least for now) because I find it easier to plot by directly copying the result from command terminal into spreadsheet.
The Finj from this algorithm is designed to stay within 1% of the original Logspace Finj.
Welcome to review the new FRA algorithm implementation here:
Note: I just run it again in my Laptop (on battery, and ~30% battery) without saving any of the waveform. The same simulation only need 29sec for 100 to 100kHz and 61 logspace data points
Enjoy,
Arief,