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Table 6 Resulting pole placement for the feedback control

From: Optimal load frequency control through combined state and control gain estimation for noisy measurements

 

Measurement noise

variance = 0.005

Measurement noise

variance = 0.01

Measurement noise

variance = 0.1

Poles

Mean

Variance

Mean

Variance

Mean

Variance

1

−6.0424

1.2244 × 10− 11

− 6.0426

1.2479 × 10− 8

−6.0595

2.0212 × 10− 4

+j4.8839

+j1.6562 × 10− 9

+j4.8845

+j1.4642 × 10− 7

+j4.8720

+j1.1398 × 10− 4

2

−6.0424

1.2244 × 10− 11

− 6.0426

1.2479 × 10− 8

− 6.0595

2.0212 × 10− 4

-j4.8839

+j1.6562 × 10− 9

-j4.8845

+j1.4642 × 10− 7

-j4.8720

+j1.1398 × 10− 4

3

−2.9952 + j0

3.6999 × 10− 11 + j0

−2.9950 + j0

2.2913 × 10− 8 + j0

−2.9917 + j0

2.1535 × 10− 5 + j0