Nonlinear Parameters for Monitoring Gear: Comparison Between Lempel-Ziv, Approximate Entropy, and Sample Entropy Complexity

Table 4

Daily mechanical appraisal.

Day	Observation
1	No acquisition
2	No anomaly
3	No anomaly
4	// //
5	// //
6	// //
7	Chipping teeth 1/2
8	No evolution
9	Tooth 1/2: no evolution; tooth 15/16: start chipping
10	Evolution of the chipping of the teeth 15/16
11	// //
12	// //
13	Chipping across the full width of the tooth