Table 2 The parameters of TRMS.

From: Real-time robust generalized dynamic inversion based optimization control for coupled twin rotor MIMO system

Variable notation

Parametric value

Unit

\(I_1\)

Main rotor inertia

\(6.8 \times {10^{ - 2}}\) kg m\(^2\)

\(I_2\)

Tail rotor inertia

\(2 \times {10^{ - 2}}\) kg m\(^2\)

\(a_1\)

Constant

0.0135

\(b_1\)

Constant

0.0924

\(a_2\)

Constant

0.02

\(b_2\)

Constant

0.9

\(M_g\)

Gravitational momentum

0.32 Nm

\({B_{1\theta }}\)

Frictional parameter

\(6 \times {10^{ - 3}}\) Nm s\({^2}\)/rad\({^2}\)

\({B_{2\theta }}\)

Frictional parameter

\(1 \times {10^{ - 3}}\) Nm s\({^2}\)/rad\({^2}\)

\({B_{1\varphi }}\)

Frictional parameter

\(1 \times {10^{ - 1}}\) Nm s/rad

\({B_{2\varphi }}\)

Frictional parameter

\(1 \times {10^{ - 2}}\) Nm s\({^2}\)/rad

\(k_gy\)

Gyroscopic parameter

0.05 rad/s

\(k_1\)

Gain of main motor

1.1

\(k_2\)

Gain of tail motor

0.8

\(T_11\)

Denominator constant of main motor

1.1

\(T_10\)

Denominator constant of tail motor

1

\(T_21\)

Denominator constant of main motor

1

\(T_20\)

Denominator constant of tail motor

1

\(k_c\)

Coupling reaction gain

2