Nghiên cứu, thiết kế, chế tạo cơ cấu hai trạng thái cân bằng waterbomb origami để tìm tần số đáp ứng phục vụ thu hoạch năng lượng=Research, design and fabrication of bistable waterbomb origami mechanism to detect response frequency for energy harvesting

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Tác giả: Tiến Hoàng Ngô

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Khoa học và Công nghệ (ĐH Công nghiệp TP. HCM), 2024

Mô tả vật lý: tr.55-68

Bộ sưu tập: Metadata

ID: 246525

Thêm vào giỏ

Bài báo này mô tả một thiết bị thu hoạch năng lượng dựa trên sự dao động của cơ cấu hai trạng thái cân bằng waterbomb origami thông qua chuyển đổi năng lượng áp điện. Thiết bị này có khả năng khai thác năng lượng băng thông rộng từ các rung động xung quanh tần số thấp. Thiết kế này sử dụng tính ổn định vốn có trong cấu trúc waterbomb origami để tăng băng thông đáp ứng tần số của nó. Việc gấp dọc theo mô hình tạo ra các nếp gấp của cơ cấu origami có thể tạo điều kiện cho các biến dạng uốn cong lớn từ đó tìm ra tần số đáp ứng thích hợp. Kích thước nhỏ gọn và trọng lượng nhẹ của cơ chế origami khiến nó thuận tiện cho việc tích hợp vào các vật chủ khác nhau chịu rung động. Hiệu suất của cơ cấu waterbomb origami được thực nghiệm dưới các kích thích bên ngoài với các cường độ dao động khác nhau như 0.1mm, 0.5mm và 1mm. Giải thuật bậc 4 Runge-Kutta trong Matlab được sử dụng để giải quyết các bài toán tìm các giá trị ban đầu trong hệ phi tuyến. Kết quả thực nghiệm và giải tích trong Malab được so sánh và cho kết quả sai khác trong khoảng 5%.This paper describes an energy harvesting device based on the oscillation of the bistable waterbomb origami mechanism through piezoelectric energy conversion. This device is capable of harnessing broadband energy from low frequency ambient vibrations. This design uses the stability inherent in the waterbomb origami structure to increase its frequency response bandwidth. Folding along the pattern creates folds of the origami mechanism that can facilitate large bending distortions from which to find the appropriate frequency response. The compact size and light weight of the origami mechanism make it convenient for integration into different hosts subject to vibration. The performance of the origami waterbomb mechanism was tested under external excitation with different vibration intensities such as 0.1mm, 0.5mm and 1mm. The Runge-Kutta quaternary algorithm in Matlab is used to solve problems of finding initial values in a nonlinear system. The experimental and analytical results in Malab were compared and the results differed by about 5%.

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