Research Article
A Simulation Model for Machine Efficiency Improvement Using Reliability Centered Maintenance: Case Study of Semiconductor Factory
Table 7
Comparison of real system data and simulation results.
| | Replication | Performance measures | | Throughput | Lead PPM | | Real system | Simulation model | Real system | Simulation model |
| | 1 | 239 | 237 | 1,041 | 960 | | 2 | 238 | 238 | 989 | 1,029 | | 3 | 240 | 241 | 1,087 | 975 | | 4 | 235 | 237 | 825 | 1,058 | | 5 | 240 | 236 | 1,063 | 1,281 | | 6 | 237 | 237 | 936 | 1,183 | | 7 | 235 | 237 | 838 | 1,018 | | 8 | 242 | 243 | 1,216 | 1,251 | | 9 | 238 | 242 | 983 | 905 | | 10 | 239 | 239 | 1,037 | 1,213 | | Sample mean () | 238.3 | 238.7 | 1,001.5 | 1,087.3 | | Sample standard deviation () | 2.213 | 2.452 | 116.7 | 133.5 | | 95% confidence interval | | |
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