Zhiwei Ai, Junyuan Chen, Jianbo Ji, Mufan Zhang, Yuanzhong Bai. Disturbance Suppression Method for Assembly Errors in Fast Steering Mirrors[J]. Laser & Optoelectronics Progress, 2024, 61(5): 0512008
- Laser & Optoelectronics Progress
- Vol. 61, Issue 5, 0512008 (2024)
Fig. 1. Bode diagram of equivalent disturbance link
Fig. 2. Improved DOB disturbance suppression model
Fig. 3. Schematic diagram of DDOB disturbance suppression system model
Fig. 4. Suppression curve of inner loop disturbance observation link
Fig. 5. Desired disturbance suppression curves introduced by outer loop disturbance observation link. (a) Mode one; (b) mode two
Fig. 6. Disturbance suppression characteristic curve of inner loop disturbance observation link
Fig. 7. Disturbance suppression characteristic curve of outer loop disturbance observation link
Fig. 8. Disturbance suppression characteristic curve of DDOB system
Fig. 9. Comparison of system disturbance suppression characteristics before and after adding DDOB
Fig. 10. Step response curves of virtual prototype system before and after adding DDOB
Fig. 11. Comparison of theoretical output of control system under different frequency disturbances. (a) 15 Hz; (b) 40 Hz; (c) 60 Hz; (d) 120 Hz
Fig. 12. Comparison between virtual prototype and theoretical outputs of DDOB system under different frequency disturbances. (a) 15 Hz; (b) 60 Hz
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Table 1. Comparison of disturbance suppression capabilities in time and frequency domain before and after adding DDOB
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