Fault Detection Under Varying Load Conditions Based on Dynamic Multi-Principal Component Models

Characteristics of Large-Scale Synthesis Ammonia Plant under Varying Load Conditions

变负荷条件下的大型合成氨装置特性研究

The results show that according to the curve of time varying interface acceleration, the process of DME bubble gorwth can be divided into three domains: surface tension controlled growth, transition domain and heat transfer controlled growth.

研究结果表明，根据气泡生长的加速度曲线，二甲醚气泡的生长过程可划分为表面张力控制阶段、过渡阶段和传热控制阶段。

Furthermore, equivalent apodization can also be achieved by varying the sampling duty cycle. 2. Coupled-mode theory and transfer matrix theory.

利用重构一等效啁啾技术还可通过改变取样占空比来对光栅进行等效切趾。2.耦合模理论和传输矩阵理论。

Introduces three methods that can adjust refrigerating output according to the variation of load aimed at the varying duty condition during the practical operation process of refrigeration system, frequency inverter technique, parallel unit with several compressors and liquid refrigerant storing method.

针对制冷系统实际运行过程中存在的变负荷工况，介绍三种根据负荷变化调节制冷量的方法：变频技术、多机并联压缩机组以及液体制冷剂储存方法。

After the transformation of the flow path of a certain unit, there exits excessive negative differential expansion under normal operation condition, which seriously impacts the varying duty and the variable parameter characteristics of the unit.

某型号机组经过通流部分改造后存在着正常运行状态下负胀差偏大的问题，严重影响机组的变负荷特性及变工况特性。

The result indicates that the model can simulate the varying duty working characteristics of nuclear steam turbine plant accurately, and meets the needs of simulation analysis work on secondary system of nuclear power plant.

结果表明，该模型能准确模拟核汽轮机装置的变负荷运行特性，满足核动力二回路系统实时仿真分析要求。

By means of the model, the dynamic characteristics of marine nuclear steam turbine plant under the rapidly varying duty working conditions is calculated and analyzed.

利用该仿真模型对快速变负荷工况下船用核汽轮机装置的动态特性进行了计算分析。

Effects of Bending Blades on Varying Duty of Steam Turbine

弯扭叶片对汽轮机变工况的影响分析

Economic analysis of the second unit varying duty operation in shengli power plant

胜利发电厂2号机组变工况运行经济性分析

It is investigated that the influence of Bauschinger Effect on yield strength of tube body by using four point bending test to simulate the tube making process at varying stress strain amplitudes.

采用X65钢板在四点弯曲加载条件下，模拟输油管制管过程中不同应变量下的应力&应变过程，研究包申格效应对输油管管体屈服强度的影响。

The main cause for such failure was the high varying stress from the blade flutter because of its relatively small flutter margins.

叶片颤振裕度不大，在工作转速范围内产生颤振导致叶片承受较大的动应力是其疲劳断裂的主要原因。

Equi Strength Design of Nonhomogeneous Variable Thickness High Speed Rotating Disk under Steady Temperature Field ON THE FATIGUE LIFE WITH VARYING STRESS AMPLITUDES

在定常温度场中非均匀变厚度高速旋转圆盘的等强度设计变应力幅值下的疲劳寿命问题

And set up calculating formulae on the fatigue life reliability under un varying stress amplitude and varying stress amplitude.

建立了恒幅常应力和恒幅变应力情况下疲劳寿命可靠度的计算公式。

Analysis of the statistical characteristics of the randomly varying stress in structure

结构的随机应力统计特性分析

The maximum likelihood function of varying stress accelerated life is a nonlinear multi-dimension complex object function with five evaluated parameters, whose parameter estimation is easy to get into local optimization with grads descending algorithm while has low searching efficiency with global optimal algorithm.

变应力加速寿命试验的极大似然函数是高维非线性复杂目标函数，其待估参数多，采用梯度下降优化方法进行参数估计容易陷入局部极值，而采用全局优化方法又存在寻优效率低的问题。

One method solving parameter estimation of varying stress accelerated life test

一类解决变应力加速寿命试验参数估计的方法

Time-varying element method and its application

时变元法及其应用

A theoretical analysis of the varying pitch screw in mathematics, physics and shaping principle was presented.

对变螺距螺纹的成形原理进行了分析。

A Study of Screw Machining for Varying Pitch

变螺距螺杆加工的研究

An Improved Design of Machining for Varying Pitch

加工变螺距螺杆的一种改进设计