Estimating Friction Parameters in Reaction Wheels for Attitude Control

Table 1

Friction parameters of the reaction wheel.

Parameter		Deterministic	Statistical
Motor constant	𝑘𝑚	0.0270	0.0228
Viscous coefficient	𝑏	5.16×10^−6	4.83×10^−6
Coulomb torque	𝑐	0.8795×10^−3	0.8795×10^−3
Static torque	𝑇𝑠	—	0.9055×10^−3