  A hypothetical pseudo-scalar particle axion, which is an immediate result of
the Peccei-Quinn solution to the strong CP problem, may couple to gluons and
lead to an oscillating electric dipole moment (EDM) of fundamental particles.
This paper proposes a novel method of probing the axion-induced oscillating EDM
in storage rings, using a radiofrequency (RF) Wien Filter. The Wien Filter at
the frequency of the sidebands of the axion and $g-2$ frequency,
$f_\text{axion} \pm f_{g-2}$, generates a spin resonance in the presence of an
oscillating EDM, as confirmed both by an analytical estimation of the spin
equations and independently by simulation. A brief systematic study also shows
that this method is unlikely to be limited by Wien Filter misalignment issues.
