Coupling Analysis and Cross-Feedback Control of Three-Axis Inertially Stabilized Platform with an Active Magnetic Bearing System

Table 1

Parameters of three-axis ISP with the AMB system.

Symbol	Quantify	Value
	Axial current stiffness
	Axial displacement stiffness
	Radial current stiffness
	Radial displacement stiffness
	Moment of inertia
	Amplification coefficient
	Proportion coefficient of radial AMB
	Proportion coefficient of axial AMB
	Back-EMF coefficient	0.4 V/(rad/s)
	Torque constant	0.42 Nm/A
	Mass of yaw gimbal	23 kg
	Armature resistance	2.6 Ω
	Gear ratio	6.7
	Displacement sensitivity	0.3 V/mm
	Derivative coefficient of radial AMB	0.7
	Derivative coefficient of axial AMB	0.6