A More Reliable Method for Monitoring the Condition of Three-Phase Induction Motors Based on Their Vibrations

Figure 2

Time- and frequency-domain representations of the two signals 𝑓₁ and 𝑓₂. (a) 𝑓₁ in time domain, (b) 𝑓₁ in frequency domain, (c) 𝑓₂ in time domain, and (d) 𝑓₂ in frequency domain.

(a)

(b)

(c)

(d)