Fig. 1. Structure of precision image stabilization system for space telescope

Fig. 2. Driving structure of large-aperture FSM

Fig. 3. Block diagram of precision image stabilization control method

Fig. 4. Input and output data of frequency sweep detected by FGS

Fig. 5. Bode diagram of precision image stabilization closed-loop system

Fig. 6. Experiment system for precision image stabilization for space telescope

Fig. 7. Experimental hysteresis and the simulation of the identified Hammerstein model

Fig. 8. Real-time positioning and error curves of PZT

Fig. 9. Star point image captured by FGS

Fig. 10. Detection and control sequence diagram of precision image stabilization system

Fig. 11. Time domain curve of the centroid position error of target star point before and after compensation in the X and Y directions

Fig. 12. PSD curve of the centroid position error of target star point before and after compensation in the X and Y directions in the frequency band of 0~6 Hz