基于虚拟样机的故障安全分析演示平台设计

发布时间：2018-05-07 02:32

本文选题：故障安全分析 + 虚拟样机　；参考：《系统工程与电子技术》2017年03期

【摘要】：大型复杂机电液系统的故障安全分析面临的主要障碍是历史故障数据的不足。针对该问题,提出了基于虚拟样机的机电液系统故障安全分析方法,设计并构建了其演示平台。介绍了故障安全分析演示平台所涉及的关键技术实现方法,包括虚拟样机的建立与验证、基于故障仿真的故障模式与影响分析、基于蒙特卡罗仿真的概率风险分析以及基于广义回归神经网络的关键参数预警,并采用多种软件环境集成构建了演示平台。操舵系统的案例研究结果表明,所提出的技术方法能够有效缓解历史故障数据不足的问题,演示平台能够满足机电液系统故障安全分析的需要。
[Abstract]:The main obstacle in fault safety analysis of large complex electromechanical hydraulic system is the shortage of historical fault data. In order to solve this problem, a fault safety analysis method based on virtual prototype for electromechanical and hydraulic system is proposed, and its demonstration platform is designed and constructed. The key techniques involved in the demonstration platform for fault safety analysis are introduced, including the establishment and verification of virtual prototyping, fault mode and impact analysis based on fault simulation. The probabilistic risk analysis based on Monte Carlo simulation and the early warning of key parameters based on generalized regression neural network (GRNN) are presented, and the demonstration platform is constructed by integrating various software environments. The case study of steering system shows that the proposed technical method can effectively alleviate the problem of insufficient historical fault data, and the demonstration platform can meet the need of fault safety analysis of electromechanical and hydraulic systems.
【作者单位】：国防科学技术大学装备综合保障技术重点实验室;国防科学技术大学机电工程与自动化学院;中船重工集团707研究所九江分部;
【基金】：部委级预研项目资助课题
【分类号】：TP277

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