定性模型 meaning in English
qualitative model
qualutative model
Examples
- The backward scattering field of extended target is approximated as the synthesis of many strong scatter centers on target , and geometric optical method is used in establishing deterministic model of a aircraft in the paper , the model is used to evaluate the performance of frequency diversity in suppressing glint at last
本文将复杂目标后向散射回波近似为目标上若干强散射中心回波的合成，结合几何光学法得到了某种飞机目标的确定性模型，并用该模型评定频率分集对角闪烁抑制的改善性能。 - In this thesis , the qualitative - model - based fault diagnosis methods for a liquid - propellant rocket engine ( lre ) are studied in order to provide ones with novel approaches to build the fault diagnosis system , which possesses good robustness , real - time operating ability and practicability . the qualitative - model - based fault diagnosis methods hopefully substitute for quantitative - model - based methods for their limitations of computational complexity , robustness and practicability , and for the traditional rule - based method for its limitations of the acquisition of knowledge and flexibility
本文主要研究液体火箭发动机基于定性模型的故障诊断方法，其目的是为建立具有良好鲁棒性、实时性和实用性的发动机诊断系统提供一条新的技术途径，以期克服定量模型方法计算复杂、鲁棒性差、不便应用的缺陷，克服传统的基于规则方法知识获取困难和灵活性差的缺点。 - In this thesis the theory and method of intelligent fault diagnosis for a large turbo - pump fed liquid - propellant rocket engine ( lre ) is innovatively proposed and developed , based on the hybrid reasoning strategy and the hybrid knowledge models including mathematical model , logic model , graphic model and qualitative model . the theory and method are constructed in the way of intelligent modeling technique and creative application of knowledge engineering , and focus on the difficult problems and critical techniques such as the unified treatment of lre knowledge ( experience , facts , rules , graph , system structure , behavior , model knowledge and measured data ) , the integration and translation of qualitative and quantitative knowledge , and the knowledge - based intelligent fault diagnosis reasoning methods . firstly , besides the correlation of different knowledge , the concept and the types of lre diagnosis knowledge are systematically described
本文以某大型泵压式液体火箭发动机为研究对象，以智能建模技术和知识工程的创造性应用为主要技术手段，围绕着发动机知识(经验、事实、规则、图形、结构、行为、模型知识与测量数据信息等)的统一处理技术、定性定量知识的集成与转化和基于知识的智能故障诊断推理等关键技术和难点，创新地研究发展了发动机基于混合知识模型(数学模型、逻辑模型、图形模型及定性模型)和混合推理策略的智能故障诊断理论和方法。