基于监测信息的固体火箭发动机健康状态评估技术
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摘要
针对固体发动机难以建立复杂环境下可信度较高的失效模型对固体发动机进行健康状态评估的现状,建立了基于定期无损探伤数据和长期环境监测数据为检测信息指标的固体发动机健康状态评估模型。首先划分固体发动机健康状态等级,在此基础上,确定影响健康状态等级的具体监测信息指标及其权重,界定各监测信息单项指标处在不同健康状态等级的标准范围,基于实测检测信息和不同健康状态等级的标准范围明确监测信息的评估量化值、量值域和全域,并计算监测信息指标关于各健康状态等级的关联度,加权求和即可得出处于不同健康状态等级的综合关联度,实现基于监测信息的固体发动机健康状态的评估。
It is difficult to establish credibility higher failure model under complex environment and evaluate the status of the solid rocket motor. The evaluation model based on periodic nondestructive inspection data and long-term environmental monitoring data has been established. First,the levels of health status of solid rocket motor has been divided,in order to determine the health status of specific monitoring information index and its weights. Also it can be used to define the monitoring information of single index at different health levels of the standard range,and determine the evaluation of quantitative indexes. The quantity of monitoring information domain and the whole domain specific monitoring information can be obtained. It ca also be used to calculate the correlation degree of different levels of health status. Moveover,the comprehensive correlation degree of each health state grade can be obtained by weighted sum,based on which the solid rocket motor health status evaluation is realized.
It is difficult to establish credibility higher failure model under complex environment and evaluate the status of the solid rocket motor. The evaluation model based on periodic nondestructive inspection data and long-term environmental monitoring data has been established. First,the levels of health status of solid rocket motor has been divided,in order to determine the health status of specific monitoring information index and its weights. Also it can be used to define the monitoring information of single index at different health levels of the standard range,and determine the evaluation of quantitative indexes. The quantity of monitoring information domain and the whole domain specific monitoring information can be obtained. It ca also be used to calculate the correlation degree of different levels of health status. Moveover,the comprehensive correlation degree of each health state grade can be obtained by weighted sum,based on which the solid rocket motor health status evaluation is realized.
引文
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