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试飞改装环节试验机产品结构管理研究
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作者 颜凯 王迪 《工程技术研究》 2020年第3期271-272,共2页
鉴于目前国内飞机设计与制造一体化生命周期管理体系基本完善,但在试飞改装环节还未得到系统的应用,文章通过分析飞机试飞周期内改装业务特点,建立按DBS和WBS混合的产品组织和管理结构:试验机结构系统采用DBS与GCO混合应用的管理模式,... 鉴于目前国内飞机设计与制造一体化生命周期管理体系基本完善,但在试飞改装环节还未得到系统的应用,文章通过分析飞机试飞周期内改装业务特点,建立按DBS和WBS混合的产品组织和管理结构:试验机结构系统采用DBS与GCO混合应用的管理模式,测试改装任务采用WBS管理模式,二者相结合构成试验机测试改装产品结构。同时,针对试飞改装常用的设备,提出测试改装专用设备库建立、设备建模及管理办法,并以某型机为例详细阐述了试飞改装环节试验机产品结构管理方案,对我国试飞改装环节一体化设计具有重要的参考价值。 展开更多
关键词 试飞改装 一体化设计 产品结构 设计结构分解 任务结构分解
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A structural design of multilevel decomposition and domain mapping 被引量:1
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作者 Jeongick Lee 《Journal of Central South University》 SCIE EI CAS 2014年第9期3504-3512,共9页
An integrated optimization design was described using multilevel decomposition technique on the base of the parametric distribution and independent axiom at the stages of lower level. Based on Pareto optimum solution,... An integrated optimization design was described using multilevel decomposition technique on the base of the parametric distribution and independent axiom at the stages of lower level. Based on Pareto optimum solution, the detailed parameters at lower level can be defined into the independent axiom. The suspension design was used as the simulation example. In an axiomatic design for the optimization design, the uncoupled and decoupled designs between functional requirements and design parameters are generally needed. But using the design sensitivity(or screening) of design parameters, the approximate uncoupled design is developed on behalf of the decoupled and coupled designs. Successive design parameters were applied to the suspension of torsion beam axle. The structural performance increases by 18%. The kinematic and compliance performance increases by 6% within the feasible ranges. 展开更多
关键词 multilevel decomposition independent axiom Pareto optimum solution torsional beam axile
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On design of efficient comb decimator with improved response 被引量:1
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作者 刘全 Gao Jun Huang Gaoming 《High Technology Letters》 EI CAS 2012年第2期202-207,共6页
A three-part comb decimator is presented in this paper, for the applications with severe requirements of circuit performance and frequency response. Based on the modified prime factorization method and multistage poly... A three-part comb decimator is presented in this paper, for the applications with severe requirements of circuit performance and frequency response. Based on the modified prime factorization method and multistage polyphase decomposition, an efficient non-recursive structure for the cascaded integrator-comb (CIC) decimation filter is derived. Utilizing this structure as the core part, the proposed comb decimator can not only loosen the decimation ratio's limitation, but also balance the tradeoff among the overall power consumption, circuit area and maximum speed. Further, to improve the frequency response of the comb decimator, a cos-prefilter is introduced as the preprocessing part for increasing the aliasing rejection, and an optimum sin-based filter is used as the compensation part for decreasing the passband droop. 展开更多
关键词 comb decimator cascaded integrator-comb (CIC) filter prime factorization polyphase decomposition
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Interaction Analysis and Decomposition Principle for Control Structure Design of Large-scale Systems
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作者 罗雄麟 刘雨波 许锋 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2014年第1期59-71,共13页
Industrial processes are mostly large-scale systems with high order.They use fully centralized control strategy,the parameters of which are difficult to tune.In the design of large-scale systems,the decomposition acco... Industrial processes are mostly large-scale systems with high order.They use fully centralized control strategy,the parameters of which are difficult to tune.In the design of large-scale systems,the decomposition according to the interaction between input and output variables is the first step and the basis for the selection of control structure.In this paper,the decomposition principle of processes in large-scale systems is proposed for the design of control structure.A new variable pairing method is presented,considering the steady-state information and dynamic response of large-scale system.By selecting threshold values,the related matrix can be transformed into the adjoining matrixes,which directly measure the couple among different loops.The optimal number of controllers can be obtained after decomposing the large-scale system.A practical example is used to demonstrate the validity and feasibility of the proposed interaction decomposition principle in process large-scale systems. 展开更多
关键词 control structure interaction analysis interaction decomposition threshold value
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