Altair slc sinusoidal a path for an axial flux machine to estimate for the magnetic flux density
Too long to post on lists, see github
https://github.com/rogerjdeangelis/utl-altair-slc-sinusoidal-a-path-for-an-axial-flux-machine-to-estimate-for-the-magnetic-flux-density
Graphic
https://github.com/rogerjdeangelis/utl-altair-slc-sinusoidal-a-path-for-an-axial-flux-machine-to-estimate-for-the-magnetic-flux-density/blob/main/axial_flux_analysis.pdf
SUMMARY (table ADDLABELS)
Variable Typ Value Formula
MAX_B N8 1.56 round(max(B_mag), 3)
MIN_B N8 -1.56 round(min(B_mag), 3)
AVG_B N8 0.605 round(mean(abs(B_mag)), 3)
RMS_B N8 0.817 round(sqrt(mean(B_mag^2)), 3)
These metrics characterize the B-field variation generated by B_peak * (cos(phi) +
0.3 * cos(3 * phi)) where phi = freq * theta.
- MAX_B (1.56 T): Peak positive magnetic
flux density. Occurs when cos(phi) + 0.3*cos(3*phi) reaches +1—your design's maximum field
strength.
[web.mit](https://web.mit.edu/kirtley/binlustuff/literature/electric%20machine/designOfAxialFluxPMM.
pdf) - MIN_B (-1.56 T): Peak negative flux density. Symmetric due to cosine terms; shows
full alternating field swing typical in axial flux machines.
traxial - AVG_B
(0.605 T): Mean of absolute B_mag values. Captures average rectified field strength
(mean(abs(B_mag))), relevant for torque averaging since direction reverses but magnitude drives
force. leili-motor - RMS_B (0.817 T): Root mean square (\sqrt{\frac{1}{N}\sum B_{mag}^2}). Best metric for
power/heating calcs as it weights higher magnitudes quadratically—standard for AC fields in motor
design.
[web.mit](https://web.mit.edu/kirtley/binlustuff/literature/electric%20machine/designOfAxialFluxPMM.
pdf)
Design Context
Your values indicate a strong NdFeB magnet design (B_peak implies
~1.56 T peak airgap flux, realistic for axial flux PM machines). RMS_B 52% of peak aligns with
~3rd harmonic modulation; expect good torque from this field profile. AVG_B > RMS_B/v2 suggests
peaked waveform favoring peaky torque delivery.
leili-motor
