Table 7 Splitting result obtained using cluster centers strategy
Value of k | Cluster centers | Sub-range of voltage (V) | Sub-range of pulse on time (µs) | Sub-range of feed rate (µm/s) | Number of sub-spaces |
|---|---|---|---|---|---|
2 | [10 V,60 µs,6 µm/s]; [18 V,25 µs,6 µm/s] | [8,10]; [10,18]; [18, 20] | [25, 60]; [60,70] | [4, 6]; [6, 8] | 12 |
3 | [10 V,55 µs,6 µm/s]; [10 V,70 µs,6 µm/s]; [18 V,25 µs,6 µm/s] | [8,10]; [10,18]; [18,20] | [25,55]; [55,70] | [4, 6]; [6, 8] | 12 |
4 | [10 V,60 µs,6 µm/s]; [10 V,70 µs,6 µm/s]; [18 V,25 µs,6 µm/s]; [10 V,50 µs,6 µm/s] | [8,10]; [10, 18]; [18,20] | [25,50]; [50,60]; [60,70] | [4,6]; [6,8] | 18 |
5 | [9 V,50 µs,5 µm/s]; [10 V,70 µs,6 µm/s]; [18 V,25 µs,6 µm/s]; [10 V,60 µs,6 µm/s]; [10 V,50 µs,8 µm/s] | [8, 9]; [9, 10]; [10, 18]; [18, 20] | [25,50]; [50,60]; [60,70] | [4,5]; [5,6]; [6, 8] | 36 |
6 | [9 V,50 µs,5 µm/s]; [10 V,50 µs,8 µm/s]; [10 V,70 µs,7 µm/s]; [9 V,70 µs,5 µm/s]; [10 V,60 µs,6 µm/s]; [18 V,25 µs,6 µm/s] | [8, 9]; [9, 10]; [10, 18]; [18, 20] | [25,50]; [50,60]; [60,70] | [4, 5]; [5, 6]; [6, 7]; [7, 8] | 48 |