time-variation造句
例句与造句
- Time - variation reliability analysis based on ultimate strength of corroding ship girders
考虑腐蚀影响的船体梁极限承载能力时变可靠性分析 - The time - variation reliability formula of the existing bridge in its life cycle is deduced based on markov process
基于马尔可夫过程得到体现在用桥梁生命周期内承载力可靠度时变规律的计算公式。 - The whole problem related to the time - variation of the load is completely solved by the proposed method , the core of which lies in the tva model structure
整个过程中，模型结构的改进是其中的关键。大区电网负荷建模研究是从模型应用角度研究对不同物理地点的负荷进行建模的问题。 - We tested the time - variation of means and volatility , results show that the time - variation of means is not obvious , but the time - variation of volatility is very clear
检验了均值、方差的时变性，结果表明均值序列的时变性不明显，但方差西安理工大学硕士学位论文序列的时变性非常明显。 - We introduced some calculated methods of var with static and unconditional distribution , and analyzed the time - variation of volatility using arch model and its general forms detailsly
首先介绍了一些静态、无条件分布下的var计算方法，在此基础上，利用arch及其模型对方差的时变性进行了细致分析。 - It's difficult to find time-variation in a sentence. 用time-variation造句挺难的
- The electromagnetic field theory and the variation method is applied to found the 2d mathematics model during the process of starting of the induction machine with compound cage rotor . the dispersion , element analyse and collectivity composing of time - variation field are given
利用电磁场理论和变分法建立了复合笼条转子感应电动机起动时二维电磁场的数学模型，给出了正弦时变场单元分析过程和离散格式以及最终的总体合成方程。 - Abstract : according to the characterestic of resistance furnace temperature control , temperature rising one - way control , large time delay and time - variation of parameter , using method of fuzzy compositional rule of inference establish fuzzy model and design fuzzy cntroler . in order to increase control system precision , it gives a fuzzy variable k , and sets parameter self - adjusting fuzzy control system . this system can on line self - adjusting controller parameters according to the error and variations of the error . it makes the system steady precision improved
文摘:根据电阻炉温控制的特点，即只有升温单向控制、滞后较大且具有参数时变性，利用模糊推理合成法建立模糊模型并进行模糊控制器设计，为提高模糊控制的精度，引入模糊变量k ，构成参数自调整模糊控制系统.该系统可根据误差和误差变化在线自动调整控制器参数，使系统的稳态精度得到改善 - Because every process are classical time - variation system whit multivariable , long delay time , nonlinear and destabilization and every process has themselves special requirements , considering of their common features the paper write out a three - level intelligence control system which give each process suitable methods
对中药生产过程各工段控制方法的研究是本文的重点,由于中药生产的各主要工段都是典型的多变量、大时延、非线性、带扰动的时变系统,并且中药生产过程各工段均有其特殊工艺要求。 - The dissertation proposes originally the idea of decomposing the time - variant load to solve this problem . first , the time - variant load is decomposed into the time - variant load characteristic and the time - variant load model due to the modeling method . second , the multi - curve approximation method is proposed to identify the load parameters , which to a great extent , reduces the effects on the time - variation of the load model from modeling method
针对负荷的时变性，论文首次提出了将负荷时变性分解的思想，首先将负荷的时变性分解为负荷特性的时变性和由建模方法引起的负荷模型的时变性，然后提出了多曲线拟合参数辨识方法，很大程度上消除了建模方法引起的负荷模型的时变性。 - Then , time - variant load characteristic is decomposed and the tva load model structure is proposed to reduce the effects on the time - variation of the amplitudes of the load . finally , the group algorithm and hypothesis testing strategies are applied to solve the problem of the time - variation of the load components
进一步对负荷特性的时变性进行分解，提出了tva负荷模型结构以消除负荷幅值大小时变性的影响，最后，采用分组算法和假设检验的工程应用策略，解决了负荷组成成分的时变性问题，从而最终从一定程度上解决了负荷的时变性问题。 - The transverse stiffness limitation index ? the permissible ultimate width / span ratio b / l of the continuous steel truss girder of railway bridge is analyzed in accordance with the analytic theories of random vibration of train ? bridge time - variation system and the required derailment coefficients and comfort of drivers and passengers in train running through the bridge . the limitation index in question may be referred to in the design of the continuous steel truss girders of railway bridges
基于列车-桥梁时变系统随机振动分析理论，按照桥上列车脱轨安全系数和司机、旅客舒适度的要求，对铁路连续钢桁梁桥横向刚度限值-桥梁容许极限宽跨比b / l进行了分析，对铁路连续钢桁梁桥的设计具有一定的参考作用。 - But in analyzing the dynamic characteristics of rolling mill , we find that the system exists nonlinear uncertainty and slow time - variation , which are caused by nonlinear mode and random disturbance . this leads to the approximation of the practical system of the model and parameter and it is difficult to construct the accurate mathematical model . therefore , the routine controlling method is n ' t used any longer
然而，在分析轧机的动态特性中发现，由于位置内环的模型中存在非线性元件，系统受到过多外界扰动的影响致使系统中存在非线性、不确定因素及慢时变参数的现象，推导出的模型结构和参数只是实际系统的一个粗糟近似，难以建立精确的数学模型，此时，常规控制方法已不再适用。 - Because return of chinese security market is non - normal distribution , so we use garch - t model which can describe the time - variation of volatility and the high - peaked and heavy - tailed characteristics of return to calculate var value of market index . from empirical results we know that this model is efficient
考虑到中国证券市场收益率序列分布的非正态性，本文使用了既能描述方差时变性又能反映收益率分布的尖峰、厚尾特征的garch - t模型计算市场指数的var值，实证结果表明该模型是有效的。 - According to the characterestic of resistance furnace temperature control , temperature rising one - way control , large time delay and time - variation of parameter , using method of fuzzy compositional rule of inference establish fuzzy model and design fuzzy cntroler . in order to increase control system precision , it gives a fuzzy variable k , and sets parameter self - adjusting fuzzy control system . this system can on line self - adjusting controller parameters according to the error and variations of the error . it makes the system steady precision improved
根据电阻炉温控制的特点，即只有升温单向控制、滞后较大且具有参数时变性，利用模糊推理合成法建立模糊模型并进行模糊控制器设计，为提高模糊控制的精度，引入模糊变量k ，构成参数自调整模糊控制系统.该系统可根据误差和误差变化在线自动调整控制器参数，使系统的稳态精度得到改善 - In this paper , based on the characteristics of force and deformation of pars , the time - variation of the elastic coefficient of fulcrum in the calculation model of pars is analyzed and studied ; and the lessening of rigidity coefficient of elastic fulcrum , which is caused by the continual bottom soil resilience beside the piles and the increase of excavation depths during different steps , is discussed
摘要根据桩锚支护结构的受力和变形特点，研究分析了桩锚支护结构计算模型中支点弹性刚度系数的动态时变性；讨论了随桩内侧坑底土的持续反弹以及不同工况下随著基坑开挖深度的逐渐增大，进而导致弹性支撑刚度系数的减小的变化规律。