6 results about "Reliability block diagram" patented technology

The invention relates to the technical field of reliability engineering, in particular to a reliability evaluation method and evaluation device for an engineering production system, and the method comprises the steps: obtaining a reliability block diagram of the engineering production system, determining the metadata of each function block, generating a reliability function network, marking a typical reliability structure unit, and obtaining a reliability function network; the method comprises the following steps: determining a function subnet, configuring a time domain strategy to generate a self-adaptive time grid, solving the equivalent reliability of the function subnet at a self-adaptive time point of the self-adaptive time grid to obtain a reliability sampling sequence of the engineering production system, and generating a reliability evaluation result. Therefore, the problems that in the related technology, due to the fact that semantic information corresponding to a reliability block diagram depends on manual disassembly, and a reliability evaluation result is calculated through fixed step size discrete approximation, missed judgment and misjudged are likely to occur due to complex topology, the calculation precision is poor in a high-risk time period, the calculation efficiency is low in a stable time period, and engineering decision is difficult to support are solved.

The invention discloses a reliability analysis integrated application method of a carrier rocket control system, and the method combines the technologies of state simulation modeling, path traversal searching, reliability block diagram modeling and the like, and builds a reliability analysis system facing a complex system. The method can effectively solve the problems of a traditional method in the aspects of component state modeling, sequential logic processing, system-level netlist data analysis and the like, and powerful technical support is provided for development of a high-reliability system.

The application belongs to the technical field of reliability evaluation, and discloses a ship system reliability calculation method and system based on discrete events and Monte Carlo simulation. The method comprises the following steps: (a) constructing a simulation model according to a reliability block diagram of a ship system to be processed; (b) setting a simulation test number N according to a total task of the ship system to be processed; (c) for the i-th simulation test, setting a simulation time, a time interval of token generation, generating a plurality of tokens with a label of 0 at a reliability entrance, transmitting each token along a corresponding directed connection line, updating the label in the transmission process, and obtaining a final label when the token reaches a reliability exit; (d) i = i + 1, repeating step (c) until i > N, obtaining the final labels of all tokens in all simulation tests, and calculating the reliability of the simulation model by using the final labels of all tokens. Through the application, the problem that the reliability of a complex system is difficult to calculate is solved.

The application discloses a kind of atmospheric and vacuum distillation unit system reliability calculation method, it includes the following steps: establishing the equipment set involved in all process flows;The equipment set involved in all process flows established is divided into a module unit according to certain connection mode according to the same function of the equipment in the same process flow node;According to the determination coefficient, determine the connection mode of each module unit in the system reliability block diagram;Obtain the reliability of each module unit;And according to the reliability of each module unit and the connection mode of each module unit in the system reliability block diagram, calculate system reliability.The application further discloses an atmospheric and vacuum distillation unit system reliability calculation system, electronic equipment and storage medium.The application divides module unit, determines the connection relationship of module unit in the system reliability block diagram according to the determination coefficient, on the one hand, ensures the accuracy and comprehensiveness of calculation, on the other hand, improves the calculation efficiency.

The invention discloses a large-scale complex system reliability test and evaluation method based on multiple distributions and related equipment. The method comprises the following steps: determining a to-be-tested system based on a task unit of a large-scale system, and obtaining a reliability block diagram and type data of each product; determining the tightening system test duration of the tested sample machine in each product based on the tightening ratio; performing a laboratory reliability test on the large-scale system based on the test duration of the tightening system to obtain first test data; independently taking out the electronic and electrical part to carry out a laboratory reliability test, and carrying out a system-level bench test on a product of the electromechanical part or collecting live operation data to obtain second test data; and performing corresponding reliability evaluation on the products of different distribution types to obtain the reliability of the products of each distribution type, and finally converting according to the system reliability block diagram to obtain the system reliability. The reliability verification implementation problem of a large-scale system can be solved, and the method can be widely applied to the technical field of data processing.

This application proposes a method and system for reliability assessment of telemetry devices based on MBSE. The method constructs a unified multi-view model using MBSE and SysML, integrating reliability requirements, structure, behavior, and parameters into a single data base, thus completely resolving the problems of disconnect between traditional reliability analysis and system design, data inconsistency, and difficulty in traceability. It should be noted that traditional methods often involve reliability analysis in the later stages of design, while this application allows for reliability modeling during the conceptual design phase. Furthermore, this application automates the generation of reliability analysis models, improving efficiency and accuracy. This application can automatically parse component connection relationships and redundant logic from the SysML structural model, generating reliability block diagrams or fault trees with a single click, replacing traditional manual drawing methods. In the embodiments of this application, this automated process significantly shortens modeling time, eliminates human error, and ensures real-time synchronization between the reliability model and the system design.