Thin aperture light collector (TALC) is the next generation of telescopes for space exploration. TALC consists of deployable annular segmented mirrors supported on a central mast with the help of cables. The dynamic stability of the telescope is of immense importance in order to make sure that the telescope is pointing in the right direction during the observation period. We present a control strategy for the dynamic stabilization of the segmented TALC structure using active rods. The active rods consist of collocated pairs of piezoelectric stack actuators and sensors. Decentralized integral force feedback is proposed to enhance the dynamic stability of the TALC. The effectiveness of the strategy is demonstrated on a 1/10th scaled mock-up model of the TALC. For numerical investigation, finite element analysis of the TALC is carried out and a reduced order model is extracted using the Craig–Bampton method. This reduced order model is then used for the design and numerical validation of the controller. Experiments are conducted on the mock-up model of the TALC to evaluate the performance of the proposed strategy. It is found that the proposed strategy is quite effective for dynamic stabilization of TALC. It is found to reduce both steady state and transient responses of the TALC.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither SPIE nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the SPIE website.