Fig. 1. Schematic of CAT-1 device

Fig. 2. Relative error varies with the number of current ring segmentations n (a) and the distance from the observation point to the current ring (b)

Fig. 3. Schematic of CAT-1 magnetic constraint coil of suspension dipole field device

Fig. 4. On the z=0 m plane ({x, y | [-1 1], [-1 1]}), the first quadrant TSR coil generates magnetic field in x-direction (a), y-direction (b), z-direction (c), and three-dimensional magnetic field direction (d)

Fig. 5. Dipole field coil rotating at the same angle along the x- and y-directions. The double TSR coil generates magnetic field in x-direction (a), y-direction (b), z-direction (c), and three-dimensional magnetic field direction (d) on the z=0 m plane

Fig. 6. Dipole-field coil rotated at a limited angle along the y-direction. The four TSR coils generate magnetic field in x-direction (a), y-direction (b), z-direction (c), and three-dimensional magnetic field direction (d) on the plane z=0 m

Fig. 7. Dipole field coil is offset in the positive direction of y=x, and the adjacent TSR coils in the plane of z=0 m are magnetic field in x-direction (a), y-direction (b), z-direction (c), and three-dimensional magnetic field direction (d)

Fig. 8. Dipole field coil is offset in the positive direction of the y-axis. The two adjacent TSR coils in the z=0 m plane are magnetic field in x-direction (a), y-direction (b), z-direction (c), and three-dimensional magnetic field direction (d)

Fig. 9. Magnetic dipole field coupled with three-dimensional magnetic field line distribution of the TSR coil in offset (a) and tilt (b) modes

Fig. 10. Working current sequence of the circumferential counterclockwise (a) and clockwise (b) magnetic disturbance TSR coil

Fig. 11. TSR coil produces a circular counterclockwise rotation of the magnetic field on the equatorial plane when ω=0 (a), ω=π/8 (b), ω=π/4 (c), and ω=π/2 (d)