International Journal of Rotating Machinery / 2017 / Article / Tab 2

Research Article

Application of System Identification for Modeling the Dynamic Behavior of Axial Flow Compressor Dynamics

Table 2

Simulation results with 1% and 5% noise std.

Error squaredCorrel. coef.
Natural freq.
Natural freq.
error

ARX-nom. 1%1.51540.933816.99580.0247
Mean 5%1.51590.931117.02110.1241

ARX-nom. 1%0.04560.00780.01260.0388
Stand. dev. 5%0.04280.00570.09930.3552

ARX-opt. 1%1.46060.933716.50242.9272
Mean 5%1.44080.938316.58262.4553

ARX-opt. 1%0.06330.00730.45952.7031
Sta. Dev. 5%0.05440.00580.45902.3990

ARX-opt 1%1.48370.932116.97630.1394
Mean 5%1.48280.931716.99460.0317

ARX-opt 1%0.03690.00860.09090.3359
Stand. dev. 5%0.04940.00510.05610.1756

ARMAX- 1%23.47500.920017.17731.0429
nom. Mean 5%36.42120.727215.118311.069

ARMAX- 1%24.62170.07214.427812.1042
nom. Std. 5%66.82240.31979.605726.5340

ARMAX- 1%1.47610.935916.40523.4997
opt. Mean 5%1.46760.936416.57942.4741

ARMAX- 1%0.07100.00700.44612.6227
opt. Std. 5%0.05800.00540.39552.1698

ARMAX- 1%1.52490.934316.98400.0941
opt. Mean 5%1.48660.931717.00240.0141

ARMAX- 1%0.06070.00540.04450.1716
opt. Std. 5%0.06190.00450.09520.3731