Research Article

Comparing Estimation Methods for the FPLD

Table 4

Simulation results.

Method Indexnλ1λ2λ3λ4λ5

NLSMRB300.00490.5616-0.00420.36270.3382
60-0.00610.19940.0037-0.1199-0.0756
1200.00040.0789-0.0015-0.0565-0.0687
2500.00140.0342-0.0017-0.0205-0.0265
500-0.00210.01760.0027-0.01100.0035

OD300.00330.5080-0.0055-0.7632-0.7697
60-0.0149 0.1782 0.0140-1.0219-0.8967
120 0.0004 0.0636-0.0013-0.5128-0.5173
250-0.0047 0.0190 0.0055-0.2752-0.2395
500 0.0021 0.0035-0.0016  -0.1402-0.1441

DLA 30 0.0083 0.5739-0.0047-0.0693-0.0791
60-0.0046 0.2045 0.0020-0.4196-0.4449
120 0.0072 0.0702-0.0082-0.2173-0.2610
250 0.0058 0.0280-0.0058-0.0898-0.1174
500 0.0008 0.0111-0.0014  -0.0495  -0.0535

NLSRMSE 30 0.8814 2.1470 0.7079 0.75720.7578
60 0.6729 0.9853 0.5984 0.40330.4026
120 0.4728 0.3686 0.4602 0.21400.2128
250 0.3225 0.1567 0.3340 0.13000.1310
500 0.2208 0.1004 0.2369 0.08790.0875

OD 30 0.8610 2.1256 0.7446 0.8617 0.8664
60 0.7257 0.9355 0.6628 0.5121 0.5104
120 0.5290 0.3262 0.5226 0.2832 0.2823
250 0.3567 0.1630 0.3765 0.1636 0.1630
500 0.2410 0.1013 0.2630 0.1027 0.1029

DLA 30 0.8733 2.1730 0.7405 0.8594 0.8580
60 0.7040 1.0139 0.6358 0.4775 0.4784
120 0.5058 0.3063 0.4951 0.2412 0.2426
250 0.3378 0.1606 0.3537 0.1447 0.1455
500 0.2314 0.1011 0.2497 0.0944 0.0946