Rough Set Neural Network Feature Extraction and Pattern Recognition of Shaft Orbits Based on the Zernike Moment

Figure 2

Shaft orbit of typical faults. (a) Ellipse. (b) Banana. (c) Outer “8.” (d) Petal shape. (e) Inner “8.” (f) Two separate ellipses. (g) Protruding burr.

(a)

(b)

(c)

(d)

(e)

(f)

(g)