Table 2 Maximum allowable time-delay upper bound for ${\mathit{d}}_{\mathbf{2}}$

α = 0, β = 0.1, $\overline{d}=0$

0.6811

1.3279

2.7420

3.7440

$d_2>0$

$d_2>0$

α = 0, β = 0.1, $\overline{d}=0.5$

0.5467

0.6743

1.1420

1.4710

1.5774

1.7426

α = 0.1, β = 0.1, $\overline{d}=0$

0.6129

1.2503

1.8750

2.4430

$d_2>0$

$d_2>0$

α = 0.1, β = 0.1, $\overline{d}=0.5$

0.4950

0.5716

1.0090

1.2990

1.4196

2.3259