Xây dựng mô hình tổng quát đánh giá độ tin cậy của hệ thống kỹ thuật phức hợp

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Tác giả: Đức Tuấn Đỗ, Đức Toàn Nguyễn

Ngôn ngữ: Vie

Ký hiệu phân loại:

Thông tin xuất bản: Khoa học Giao thông vận tải 2023

Mô tả vật lý: 329-345

Bộ sưu tập: Metadata

ID: 410658

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Tóm tắt
Chủ đề

Một hệ thống kỹ thuật phức hợp được cấu thành từ các phần tử và các phân hệ. Trong quá trình hoạt động, các phần tử hoặc phân hệ có thể bị hư hỏng, dẫn đến các chỉ tiêu độ tin cậy của chúng bị suy giảm và ảnh hưởng trực tiếp đến hiệu quả hoạt động của hệ thống. Các phần tử hoặc phân hệ sau khi hư hỏng, nếu được phục hồi, thì độ tin cậy của hệ phụ thuộc vào thời gian làm việc giữa các lần hỏng và thời gian phục hồi của chúng. Một hệ thống như vậy được gọi là hệ các phần tử hoặc phân hệ liên kết nối tiếp có phục hồi. Để đánh giá được độ tin cậy của các hệ thống kỹ thuật phức hợp đã nêu, trước hết cần xây dựng được mô hình tổng quát mô tả hoạt động của hệ thống và mô hình đánh giá độ tin cậy của nó, bao gồm các mô hình trạng thái, các ma trận chuyển tiếp trạng thái và các hệ phương trình xác suất chuyển tiếp trạng thái của toàn hệ thống. Đây chính là nội dung của bài báo. Từ mô hình tổng quát, sẽ tiến hành áp dụng cho việc đánh giá độ tin cậy của các hệ thống kỹ thuật phức hợp cụ thể nào đó, chẳng hạn như hệ thống vận tải đường sắt quốc gia, hệ thống vận tải đường sắt đô thị, hoặc các phân hệ trong các hệ thống đó, như phân hệ đường sắt, cầu, hầm, phương tiện đầu máy, toa xe hay đoàn tàu metro, phân hệ thông tin, tín hiệu, phân hệ cung cấp điện, nhà ga v.v., tùy theo chức năng, nhiệm vụ và đặc điểm của các đối tượng đã nêu., Tóm tắt tiếng anh, A complex engineering system is composed of elements and sub-systems. In operation, they may be damaged, leading to their reliability indicators being degraded and directly affecting the system's performance. If they are restored after failure, the reliability of the system depends on the working time between failures and their restoration time. Such a system is called a restorative serial system. To evaluate the reliability of the complex engineering system, it is necessary to build a general model describing the system's operation and its reliability evaluation model, including state models, state transition matrices, and systems of state transition probability equations for the whole system. This is the content of the article. From the general model, it will be applied to evaluate the reliability of certain complex engineering systems, such as the national rail transport system, the urban rail transport system, or their sub-systems, such as railways, bridges, tunnels, rolling stock or metro trains, information and signal, power supply, stations etc., depending on their functions, tasks and characteristics.

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