查询词典 by current estimation
- 与 by current estimation 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The relationships between welding pool width, wire extension and welding parameters including welding current duty ratio, base current, peak current, welding speed and wire-feeding speed were studied. Through large numbers of welding experiments, aluminum alloy pulsed MIG welding dynamic process were identified by the curve fitting method, and the mathematical models between welding current duty ratio, base current, welding speed, wire-feeding speed and wire extension were obtained, succeeding the model between the above parameters and weld pool width.
介绍了铝合金MIG焊焊接电流占空比、基值电流、峰值电流、焊接速度、送丝速度对熔宽的影响规律,并在其基础上,通过平板堆焊试验研究了这些参数对焊接干伸长的影响规律;在铝合金机器人脉冲MIG焊平板堆焊过程各焊接参数与正面熔宽之间的传递函数的基础上,采用铝合金平板堆焊阶跃试验,利用曲线拟合法辨识了铝合金机器人脉冲MIG焊动态过程传递函数,建立了焊接电流占空比、基值电流、焊接速度、送丝速度与焊接干伸长之间的对象数学模型。
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When the system starts, the speed outer ring saturats non-functional, the current inner ring plays a major role to regulate the starting current to maintain the maximum so that the speed linear change, to reach a given value; when it operates steadily, the speed negative feedback from the outer ring plays a major role ,to let the speed changes with the given speed voltage , at the same time the current inner ring regulates the armature current of motor adjustment to balance the load current.
该系统起动时,转速外环饱和不起作用,电流内环起主要作用,调节起动电流保持最大值,使转速线性变化,迅速达到给定值;稳态运行时,转速负反馈外环起主要作用,使转速随转速给定电压的变化而变化,电流内环跟随转速外环调节电机的电枢电流以平衡负载电流。
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The main research work of this dissertation is as follows: Based on the chemical reaction engineering theory and the nitrobenzene electroreduction mechanism, the plate and frame electrolyzer was designed and applied to the process of electroreduction nitrobenzene to p-aminophenol. This dissertation measured the residence time distribution data of the electrolyzer by means of the pulse response method and studied the rule of flow pattern along with the current capacity change. Under different conditions ,this dissertation studied the cyclic voltammetry properties of nitrobenzene on different electrodes by means of the dynamic cyclic voltammetry method and the electrode materials applied to the NB electroreduction have been selected primarily.Baseed on the results of cyclic voltammetry tests, this dissertation used p-electrode systems to measure the steady-state- polarization curves of nitrobenzene on different electrodes in H-type diaphragm cell, and obtained each primary factor s influence rule and the exchange current density value of each electrode.And then on the basis of the conclusions of fundamental researchs upword, the effects of influence factors on the the yield of p-aminophenol and the current efficiency,such as electrode material, current density, quantity of electricity circulated, nitrobenzene concentration . sulpuric acid concentration and so on, have been studied in detail in the systems of hign temperature , strong acidity and oxygen-poorthrough a series of electrolysis experiments in this paper.After all using Pb as anode Monel metal as cathode Dupont Nafion 417 cation-exchange membrane as membrane, this dissertation obtained the optimum technological condition: reaction temperature about 85C, current density 500A m-2, sulphuric acid concentration 20%wt.
论文的主要研究工作为:运用化学反应工程理论,结合硝基苯的电还原机理,设计出用于硝基苯直接电还原合成对氨基苯酚实验的板框式电解槽,并利用脉冲响应法测定了该板框式电解槽的停留时间分布数据,研究了流型随流量变化的规律;通过动态循环伏安法研究了硝基苯在不同电极上、不同条件下的循环伏安特性,初步评选出了用于硝基苯电还原的电极材料;结合循环伏安的测定结果,在H型隔膜电解槽中采用三电极体系测定了硝基苯在不同电极上、不同条件下的稳态极化曲线,得到了各主要因素的影响规律及硝基苯在各个电极上电还原的交换电流密度数值;在基础研究结论指导下,采用板框式电解槽,在高温、强酸、贫氧系统中,进行了一系列的电解实验,分别考察了电极材料、电流密度、通电量、硝基苯浓度、硫酸浓度等因素对收率及电流效率的影响,最终选择以蒙乃尔合金电极作为阴极、铅合金为阳极、Dupont Nofion 417阳离子交换膜为隔膜,得到由硝基苯直接电还原制对氨基苯酚的最佳电解工艺条件:反应温度85℃,电流密度500A·m~(-2),硫酸浓度20%wt。
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Modern power spectral estimation is applied in leakage current analysis in thispaper and the global character of leakage current is obtained by associated analysis ofpower spectral character and root mean square value of leakage current.
将现代功率谱估计的方法应用于泄漏电流分析中,通过泄漏电流的功率谱特征与泄漏电流时域特征中的有效值的联合分析,更好地把握了泄漏电流的总体特征。
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The Hilbert amplitude envelope of the stator current includes the low frequency of fault characteristic, thus it can reduce the signal length by resample the Hilbert amplitude envelope of the stator current by downsampling, which can avoid spectrum aliasing. Then it can reduce the computation time of the MUSIC Method for the spectrum analysis to the resampled signals for the given bandwidth. Meanwhile combining continuous subdivision Fourier transform and rotor slot harmonics based slip estimation it can in advance estimate the concrete values of the fault characteristic frequency, and then inquiry purposely the fault feature component information in the stator current spectrum in order to accomplish the broken rotor bar fault with high sensitivity and h reliability, which eliminates adverse effect of issuable false peaks to the fault detection and formed a novel scheme to detect broken rotor bar fault.
定子电流Hilbert幅值包络信号包含了低频的故障特征频率调制信号,故通过对定子电流Hilbert幅值包络信号进行降采样率重采样、减少分析信号长度,可避免低频段频谱混叠,再对减少的重采样数据进行具有超分辨率的MUSIC低频段估计,可大大降低MUSIC算法频谱估计时间;运用连续细化傅里叶变换和转子齿槽谐波转差率估计技术,可预知故障特征频率精确值,从而可有目的地查询故障分量,消除MUSIC虚假波峰对故障检测混淆的影响,大大提高了故障检测的灵敏度和可靠性,以此形成异步电动机转子断条故障检测新方法。
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A state estimation algorithm based on Y-matrix is proposed. The method of equivalent current measurement transformation is adopted in power system state estimation for different types of measurement in transmission and distribution systems.
提出一种基于导纳矩阵方程的状态估计方法,针对输电系统和配电系统不同的量测类型,采用等效电流量测变换技术进行电力系统状态估计。
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Fist, comprehensive analysis on the current study on data processing is made, and characters of Newton methods about nonlinear surveying and mapping data processing are discussed, and then new solutions to parameters estimate with multi-sources, multi-types, multi-dimension, multi-precision bynonlinear least square are presented such as PSB algorithm, digital continuation and generalized digital continuation algorithm, cone model method, tensor analysis method, GCMA(mixed algorithm of gradient method and conjugate gradient method), combining algorithm based on Newton method and gradient method and confidence region and so on, and a new fast difference iterative algorithm is proposed towards parameters estimation containing random parameters in nonlinear models, and a new solutions to nonlinear least squares surveying and mapping adjustment by parameters estimation both considering the random and nonrandom parameters is presented after studying on nonlinear data processing in deformation monitoring, and at last primary analysis on error propagation of spatial data is made and approximate error propagation formula and error analysis formula to length and area are proposed.
首先比较全面分析了目前测量数据处理理论的研究现状,讨论了牛顿类方法在处理非线性模型参数估计方面的特点,研究并给出了求解多源、多类型、多维、多精度、非线性最小二乘测量平差参数估计的若干种新方法,这包括PSB算法、数值延拓及其广义数值延拓算法、锥模型法、张量分析法、基于最速下降法和牛顿法的组合算法、基于最速下降
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In view of that the traditional estimation strategy of SOC is not suitable for the conditions of variable current discharge of battery, which is particularly complex in hybrid excavator, a new estimation strategy of SOC is presented based on the law of conservation of energy and four-line's measurement technique.
传统的电池荷电状态估算方法己经不能满足蓄电池变电流放电工况的需要,而混合动力液压挖掘机中蓄电池变电流放电工况异常复杂,因此变电流工况下SOC的准确估算具有重要意义。
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The comparison is made about the RELAX and ML, the RELAX-AS and the ML-AP, The weightiest characteristic of the current estimation of the signal parameter in getting the new estimation in the RELAX-AS was found.
这种最大依赖性使得松弛算法的交替分离解法收敛速度非常慢-这是松弛算法的交替分离解法的严重缺陷,这种最大依赖性使得松弛算法的交替分离解法在有系统误差时能够有效地抑制局部极值,这是它的一个重要性能。
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COMPOSITE CORPORATION Balance Sheet 20X1- 20X2 (in $ millions) Assets Current assets: Cash and equivalents Accounts receivable Inventories Other Total current assets 20X2 $140 294 269 58 $761 20X1 $107 270 280 50 $707 Liabilities and Stockholder's Equity Current Liabilities: Accounts payable Notes payable Accrued expenses Total current liabilities 20X2 20X1 Fixed assets: Property, plant, and equipment $1,423 $1,274 -550 -460 Less accumulated depreciation Net property, plant, and equipment 873 814 Intangible assets and other 245 221 Total fixed assets $1,118 $1,035 $213 $197 The assets are listed in order 50 53 by the length of time it223 205 normally would take a$486 $455 firm Long-term liabilities: with ongoing operations to $104 Deferred taxes $117 Long-term debt 458 convert them into cash.471 $562 Total long-term liabilities $588 Stockholder's equity: Preferred stock $39 $39 Common stock ($1 per value) 55 32 Capital surplus 347 327 Accumulated retained earnings 390 347 Less treasury stock -26 -20 Total equity $805 $725 Total liabilities and stockholder's equity $1,879 $1,742 Clearly, cash is much more liquid than property, plant and equipment.
Total assets $1,879 $1,742 美国联合公司的资产负债表美国联合公司资产负债表 20X2 和20X1 (单位:百万单位:单位百万)资产流动资产:现金及现金等价物应收帐款存货其它流动资产合计固定资产:财产,厂房和设备减:累计折旧财产,厂房及设备净值无形资产及其它资产固定资产合计 20X2 $140 294 269 58 $761 20X1 $107 270 280 50 $707 债务负债债务和股东权益债务流动负债: 20X2 20X1 资产排列的顺序是根据在通$213 $197 应付帐款 50 53 应付票据常情况下企业持续经营将资205 223 应计费用$486 $455 流动负债合计产转化为现金所需要的时间长期负债:长度。长度。显然,现金比财产,厂房,显然,现金比财产,厂房,设备等的流动性要强得多。设备等的流动性要强得多。
- 相关中文对照歌词
- Tragedy
- Small Rebellions
- Boats Against The Current
- Mamaloi
- Current Situation
- Boats Against The Current
- Boats Against The Current
- The Life Pursuit
- Lead Sails (And A Paper Anchor)
- Uncommon Me
- 推荐网络例句
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Listen,point and check your answers.
听,指出并且检查你的答案。
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Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.
但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例,经过临床的诊断后,其中施以温针治疗的48例,疗效显著,报道如下。1临床资料本组病例48
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Some known methods of remnant pump detection and automatic laser shut-down use communications, such as an OSC.
一些已知的残余泵浦检测和自动激光关断的方法利用诸如OSC的通信。