Fig. 1. Block diagram of the control system

Fig. 2. Snapshot of the magnet steady-state power supply controller board for HALF

Fig. 3. Flow chart of parameter auto-tuning algorithm

Fig. 4. Block diagram of magnet steady-state power supply power converter module

Fig. 5. Structure diagram of the control section of the magnet steady-state power supply based on a BUCK circuit

Fig. 6. Comparison of step response in power supply simulation model

Fig. 7. Snapshot of test platform of steady-state magnet power supply

Fig. 8. Current step response curves with different PI parameters (a) Polynomial_ga, (b) Pick, (c) Experience_trial