A Novel Dual-Loop Disturbance Observer-Based Attitude Control for a Space-Based Observation Microsatellite

Table 2

Satellite parameters.

Satellite parameters	Value
Mass of platform 𝑚2	𝑚2=250kg
Mass of camera turntable 𝑚1	𝑚1=30kg
The matrix of moment of inertia of platform 𝐼𝐵2	𝐼𝐵2=9000015000085 (kg · m^2)
The matrix of moment of inertia of camera turntable 𝐼𝐵1	𝐼𝐵1=9000150008.5kg⋅m^2
𝑟𝐵2𝐵1	𝑟𝐵2𝐵1=0.8m
𝑟𝐵2𝐵	𝑟𝐵2𝐵=0.08m
Maximal output torque of reaction wheel	0.1 Nm
The matrix coupling coefficient of solar panel	𝐶=−2.81370003.1420−0.044101.826
Vibration frequency of solar panels Λ	Λ=0.110000.330000.73Hz
Structural damping of solar panels	𝝃 = 0.002