Accelerometer assisted high bandwidth control of tip-tilt mirror for precision pointing stability
2011
Pointing stability that defines acceptable displacement of an observation target on the optical detector during the exposure time in a satellite telescope system largely dominates the quality of the image. 12 This research proposes a new control approach to improve pointing stability using a tip-tilt mirror. While conventional control systems for a tip-tilt mirror use feedback error signals obtained from the optical detector, the signal loses enough bandwidth to compensate for high frequency disturbances when pointing at a dark reference guide star. This paper presents a control system subsidiarily using accelerometers to generate high bandwidth feedforward control references to a tip-tilt mirror by properly identifying transfer function between acceleration and pointing displacement. The numerical simulation and experiments using a disturbance source and a tip-tilt mirror verifies feasibility of this method.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
1
References
2
Citations
NaN
KQI