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Feedback control fo...
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Ji, QingleiKTH,Hållbara produktionssystem
(författare)
Feedback control for the precise shape morphing of 4D printed shape memory polymer
- Artikel/kapitelEngelska2021
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IEEE,2021
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LIBRIS-ID:oai:DiVA.org:kth-287569
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-287569URI
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https://doi.org/10.1109/TIE.2020.3040668DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
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QC 20210927
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Four-dimensional printing (4DP) is a newly emerged technology that uses smart materials for additive manufacturing and thus enables shape and/or property change upon stimulus after the printing process. Present study on 4DP has been focused on open loop stimulus, which can hardly ensure high shape precision and predictable final states. In this paper, a new closed loop 4DP (CL4DP) process supplementing 4D printed actuation with closed loop control methods is proposed. Image feedback is used for enhancing the conventional open loop 4DP morphing process and a controller is implemented to regulate the intensity of the stimulus accordingly in real-time. To achieve precise control, a nonlinear affine system model is built by model identification with measurement data to describe the dynamic shape recovery process of the 4D printed Shape Memory Polymer (SMP). Precise shape control is achieved and the effects of controller parameters on the precision of CL4DP are studied. Traditionally, SMP has a discrete number of selected steady states. With CL4DP, such steady states can be continuous and arbitrary.
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KTHHållbara produktionssystem
(creator_code:org_t)
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Ingår i:IEEE Transactions on Industrial Electronics: IEEE, s. 12698-127070278-00461557-9948
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