介绍了一种利用料斗秤模拟桥式抓斗卸船机给煤皮带流量的方法,该方法基于PLC程序实现。
This paper introduced a method of using hopper scale to simulate bridge-type grab ship unloaded by feeder belt flow. It is implemented based on PLC program.
用弹簧单元模拟桥面板与钢梁的联结,结果表明该桥混凝土桥面板与钢梁的联结比较紧密,二者的联结可以视为固结。
Using spring to model the shear connection between concrete slab and steel girders shows that the connection is comparatively strong and can be treated as full restrained.
通过模拟桥址地形的风洞试验,确定桥梁设计基准风速和相关的风特性参数,使得到的风速真正反映桥址处风的实际状况。
The design reference wind speed and related wind characteristic parameters of the bridge are derived from the wind tunnel test of a terrain model of the bridge site.
利用有限元法对微桥结构的测辐射热计进行了二维热模拟。
Two-dimensional thermal simulations of the microbolometer with a micro-bridge structure by finite element method were done.
从数值结果得出,建立的随机模型对于模拟纤维桥连是比较有效的。
From the numerical results, the established stochastic model is comparatively effective for simulating the fiber-bridging effect.
结合龙头桥水库坝基渗流模拟试验成果,对龙头桥水库土坝基础渗流进行了综合分析,并提出了防渗措施。
Combined with simulation test results of dam foundation seepage of Longtouqiao Reservoir, the dam foundation seepage was analysed and the seepage control measures were proposed.
可见冷桥对墙体传热的影响只有通过二维、三维的温度场模拟才能比较准确地反映出来。
That means the influence of thermal bridge on the heat transfer across a wall can only be accurately calculated by two or three dimension temperature distribution simulation.
针对它们存在的不足之处,提出了一种全新的倍压型桥式整流线路,并对此线路进行了理论推导和计算机模拟仿真。
Considering existing limitation, a full-fresh voltage multiplying bridge rectifier circuit is presented, and the theoretical derivation and numerical simulation are carried out.
结果,事实上每个产品设计必须从数字抽取桥接到真实模拟世界。
As a result, virtually every product design must bridge the digital abstraction and the real analog world.
论述了音频D类功率放大器的全桥pwm改进方案,并用模拟与数字的方法实现。
An improved scheme of full bridge PWM for Class-D audio power amplifier is described in the paper, and it is implemented in analog and digital way.
根据涡流场计算结果并结合振动噪音分析,提出了改善母线桥工作噪音的措施,并对各项措施进行了数值模拟和实验研究。
After that, the improvement methods are proposed to reduce the noise, and the numerical simulations and experiments are performed to study every improvement method.
最后,将叠桥相移组合电源模型与等离子电弧模型匹配,模拟大功率电弧加热器系统的工作情况。
Finally, arc model and power supply models are matched to simulate the real arc heater system.
对地质湖盆沉积模拟实验室湖盆上装载检测仪器用的桥梁(测桥)总体方案设计中的精度问题进行了分析。
The accuracy of the measuring bridge for loading detecting instruments on the lake basin in lake sedimentation simulation lab is analyzed.
介绍了总线控制器pci9054的桥式作用、用可编程逻辑器件模拟LOCAL总线侧cpu的设计、EEPROM的配置以及总线的数据传输操作过程,然后在此基础上给出了数据采集系统的设计。
It includes that the bus controller PCI9054 action, the simulation of the CPU design with CPLD on the LOCAL bus side, configuration of EEPROM and the bus operation of the data transmission.
试验分别在湍流、均匀流两种风场环境中进行,利用尖塔、挡板、粗糙元等装置模拟了桥址处的风环境。
The wind tunnel test carries out in the turbulent and uniform wind field, spire, fence and roughness element are used for simulating the wind environment of the bridge located site.
为了提高汽车驱动桥试验的自动化程度,更好地模拟汽车实际工况,研制了一种先进的驱动桥试验台。
To improve the automatic degree of the automobile driving shaft's test and better simulate the automobile operating mode, an advanced test machine has been developed.
利用单元局部频率变化率法和单元模态应变能比法,对连续梁桥进行了损伤诊断的数值模拟研究。
Based on element local frequency change ratio method and element modal strain energy ratio method, numerical study is carried on to detect the damage of the bridge.
由于桥位置处没有仪器测量,所以根据附近强运动数据加上地震脉冲在桥位置处产生了一个虚构的记录,对于该桥运用虚构记录进行模型模拟。
Because the bridge is lack of equipment measure, an imaginary record which is used to model simulation for the bridge is produced according to the data of strong movement and earthquake pulse.
在桥梁抖振精细时程分析基础上,模拟出构件的应力时程,并以南京长江二桥为实例对公式进行了验证。
Based on the accurate bridge buffeting analysis of time history, the time history of components is simulated and numerical example is presented to testify this method.
以往的车桥耦合振动分析在轨道模型的建立和桥轨动力耦合作用上没有详细考虑,难以较为真实地模拟轨道—桥梁相互作用关系。
People in the past study did not think over the participation of the rail, so it was difficult to accurately simulate the interaction of rails and the bridge.
探讨了利用非平稳随机过程理论和少量的实际风速记录模拟自然风,并以此作为桥址处的自然风用时域抖振分析方法对某系杆拱桥进行抖振时域分析。
Then by taking the simulation results as the natural wind in the bridge address, the buffeting analysis in time domain is carried out for an arch bridge of linking pole.
本文通过运用CFD技术数值模拟舰船的运动,来求解各种舰桥风速和风向下的甲板流场。
At the different velocity and direction of wind, the flow field on warship deck can be calculated by CFD technique.
本文对四段全控桥电路在整流、逆变工况的微机实时控制进行了理论阐述和物理模拟试验。
This paper concerns the microcomputer-based real-time control of four-step controlled bridge which works both in the mode of rectifier and inverter.
介绍了荷载模拟法在铁路钢桥疲劳剩余寿命评估中的应用。
The application of the Load Simulation Method (LSM) in the evaluation of the remaining fatigue life for railway steel bridges is introduced.
试验表明这些加载方式可以较准确地模拟车辆在实际道路上行驶时所承受的载荷,从而评价驱动桥的综合性能。
Tests show that the loading scheme can rather accurately simulate the actual loads exerting on a vehicle and hence can relatively exactly evaluate the comprehensive performance of drive axle.
通过曲线箱梁桥与直线箱梁桥的对比,模拟计算并着重分析了施工阶段自重、预应力等因素对曲线箱梁桥悬浇时应力的影响。
By contrasting curved bridge and straight bridge, influence of dead load and prestressing force on the stress in cantilever casting period of curved Bridges is analyzed.
将特征正交分解型谱表示法运用于模拟具有桥塔风效应的桥梁风场中。
The proper orthogonal decomposition(POD)-based spectral representation method is used to digitally simulate wind fields around bridges with wind passage effects.
运用一阶单时间常数低通函数模拟运算放大器的开环增益,对RC桥式振荡电路进行线性分析,得出最大振荡频率为运算放大器增益带宽积的16.67%。
The maximum frequency of RC-bridge oscillator is 16.67% of gain bandwidth product of amplifier analyzed based on a first-order single time constant lowpass function model.
目的研究模拟失重大鼠股骨和骨髓中骨桥素(opn)的形态学变化。
AIM To study osteopontin (OPN) change in femur and marrow under weightlessness stimulation.
目的研究模拟失重大鼠股骨和骨髓中骨桥素(opn)的形态学变化。
AIM To study osteopontin (OPN) change in femur and marrow under weightlessness stimulation.
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