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• W2995975448 endingPage "103723" @default.
• W2995975448 startingPage "103723" @default.
• W2995975448 abstract "A multi-degree-of-freedom (multi-DOF) waist mechanism is required for robotic rats to perform species-typical behaviors, but the existing waist mechanisms are heavy and cumbersome. To solve this problem, we propose a linkage-based slider-coupled symmetric swing (S3) mechanism, which features a single-input multiple-output structure, allowing it to couple multiple DOFs. The linkage mechanism has a variety of forms and linkage curves, making the S3 mechanism suitable for multiple-constraint optimization. Based on kinematic and dynamic analyses, we constrain the S3 mechanism in terms of bending angle, transmission angle, symmetry, and its existence, and then we optimize its dimensions using an interior-point method to make it compact. Compared with an existing waist mechanism, the proposed waist mechanism has only 47.8% of the weight and smaller dimensions, making it more lightweight and compact. Experiments on a robotic rat show that the proposed waist mechanism enables a robotic rat to perform rat-like upright rearing in 0.5s and tail grooming behavior in 0.4s, indicating its good biomimetic and dynamic performances. Comparisons between two generation robotic rats also reveal that the robot with new waist mechanism has similar (sometimes superior) pitching and bending abilities with the former one." @default.
• W2995975448 created "2019-12-26" @default.
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• W2995975448 date "2020-04-01" @default.
• W2995975448 modified "2023-10-17" @default.
• W2995975448 title "Design and optimization of a lightweight and compact waist mechanism for a robotic rat" @default.
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• W2995975448 doi "https://doi.org/10.1016/j.mechmachtheory.2019.103723" @default.
• W2995975448 hasPublicationYear "2020" @default.
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