Blocked Impedance Results at 1kHz
Variation of the BlockedImpedance problem where the impedance and inductance of the SSF-082 loudspeaker are analyzed at 1kHz across a range of positions. Since the frequency is low (relative to 20kHz), a coarser surface mesh of 0.05mm can be used on the low carbon steel parts. Two configurations are considered: one with no shorting ring, and one with a copper shorting ring around the central pole.
Figure 1: Loudspeaker geometry depicting shorting ring location.
Example scripts in Mathematica, Matlab, and Lua are available below in the Files section. The results of the analysis are pictured below in Figures 2-6.
Figure 2: |Impedance| vs. Position. Analogous to ZL(jω) shown in Figure 10 in this Klippel paper.
Figure 3: |Inductance| vs. Position
Figure 4: Re[Inductance] vs. Position. Analogous Leff(f) shown in Figure 16 in this Klippel paper.
Figure 5: Re[I*ω*Inductance] vs. Position. Analogous to Reff(f) shown in Figure 17 in this Klippel paper.
Figure 6: B*l vs. Position