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 dc
 The Decentralized Coordinated Control for AC/DC Hybrid Interconnected Power Systems 交/直流混合互联电力系统的分散协调控制 短句来源 Investigations on the Theory and Application of Fault Monitoring of DC System 直流系统故障监测的理论及应用研究 短句来源 DESIGN OPTIMIZATION OF MAGNETIC STRUCTURES FOR RARE EARTH PM DC TORQUE MOTORS 稀土永磁直流力矩电动机磁结构的优化设计 短句来源 Study on the Intelligent Method of Error Correction in the DC Measurements 直流测量误差的智能化修正方法研究 短句来源 The Analysis of the Dynamic Behavior of DC Stable System for Towing Basin with a Carriage 舶池拖车直流稳速系统动态性能分析 短句来源 更多
 direct current
 Micro-Processor Direct Current Digital Control System and Its Application to ship Unloader 微机全数字直流控制系统及其在卸船机上的应用 短句来源 Design of Digital Control PWM Direct Current Servo System 数字控制PWM直流伺服系统的设计 短句来源 Application of Diagonal Recurrent Neural Network in Direct Current Dual Closed Loop Speed System 对角回归神经网络在直流双闭环调速系统中的应用 短句来源 Modelling and Intelligent Compound Controlof Direct Current Electric Arc Furnace* 超高功率直流电弧炉的建模与智能复合控制(英文) 短句来源 Direct current Lifter’s Fault Diagnosis Using ART Net 基于ART网的直流提升机故障诊断 短句来源 更多
 direct
 Micro-Processor Direct Current Digital Control System and Its Application to ship Unloader 微机全数字直流控制系统及其在卸船机上的应用 短句来源 Application of Numerical Direct Speed Modulation in the On-Line Cortrol System of 100 Mill Rods 数字化直流调速在￠100机组限动芯棒在线控制中的应用 短句来源 A Direct Control Method for Switch-mode DC-to-DC Power Converters 开关式直流功率变换器的一种直接控制方法 短句来源 Design of Digital Control PWM Direct Current Servo System 数字控制PWM直流伺服系统的设计 短句来源 Application of Diagonal Recurrent Neural Network in Direct Current Dual Closed Loop Speed System 对角回归神经网络在直流双闭环调速系统中的应用 短句来源 更多
 dc current
 The paper introduces three beam measurement systems based on the VXI bus in Hefei Light Source(HLS), Hefei storage ring's DC current transformer measurement system(DCCT), beam close orbit detection system(COD), and photon position measurement system. 介绍了合肥光源 ( HLS)基于 VXI总线的储存环直流流强测量 ( DCCT)、束流闭轨测量( COD)和光位置探测系统的数据采集。 短句来源

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 dc
 The structure and properties of the samples were investigated by XRD, Raman spectral techniques, and DC measurements and so on. Results of the analysis reveal that crystals of the complex 1 are orthorhombic, space group Pbcn, a = 4.6370(2) nm, b = 0.7549(2) nm, c = 1.3888(4) nm, V = 4.861(2) nm3, Z = 8, M = 945.49, Dc = 2.58 g/cm3, μ = 2.625 cm-1, R = 0.063, and wR = 0.075. Furthermore, it is clear that when carrier signal h(t)=0, closed-loop pulse-width modulation (PWM) DC-DC converters are not well posed, and when some condition is satisfied, the closed-loop PWM DC-DC converters with a P controller are well posed. The brushless DC motor (BLDCM) with trapezoidal electromotive force (back-EMF) waveform is used widely. Bifurcation and chaos in multi-parallel-connected current-mode controlled boost DC-DC converters 更多
 direct current
 Direct current magnetic susceptibility measurement in the 2-300 K temperature range supports a high-spin ground state. This paper analyzed the operating principles and power and torque characteristics of the wind turbine and the direct current motor (DC motor), and investigated the operating characteristics of the wind turbine compared to that of the DC motor. Surfacing beads are prepared by a direct current tungsten inert gas arc nickel-aluminum (Ni-Al) powder surfacing process. Using A-TIG welding with the modes of alternating current (AC), direct current electrode negative (DCEN) and direct current electrode positive (DCEP), respectively, the flux differently affects weld penetration when the polarity is different. The structure, phase transition, oxygen ion diffusion and electrical conductivity were studied with X-ray diffraction (XRD), differential scanning calorimeter (DSC), direct current (dc) resistivity, and dielectric relaxation (DR) measurements. 更多
 direct
 We express them in terms of generatorsEij ofU(gl(n)) and as differential operators on the space of matrices These expressions are a direct generalization of the classical Capelli identities. For a cellA?Wf we consider a full subcategory formed by direct sums of tilting modulesQ(λ) with highest weights. The Direct Summand Property in Modular Invariant Theory The group of direct isometries of the hyperbolic space ${\Bbb H}^n \mbox{is} G=\mbox{SO}_0(n,1).$ This isometric action admits many differentiable compactifications into an action on the closed n-dimensional ball. We show that ${\mathcal M}(G,R)$ is a symmetric tensor category, i.e., the motive of the product of two projective homogeneous G-varieties is a direct sum of twisted motives of projective homogeneous G-varieties. 更多
 dc current
 The approach proposed uses measurements of the dc current-voltage characteristic with subsequent digital processing of the obtained data. Synthesis of New Electrolytes in Solutions with dc Current A cylindrical liquid conductor at constant temperature with an axisymmetric dc current generating an azimuthal magnetic field is studied. A mutually single-valued correspondence is established between the relative magnetoresistance measured at dc current and the change in the transmission coefficient of electromagnetic waves in the magnetic field. when passing dc current through a silver tip mounted on a magnetic Co/Cu multilayer. 更多
 This paper describes an instrument for the free field reciprocity calibration of hydrophones in ordinary ater tank by pulse technique. The instrument measures the amplitude of the pulse by comparing it with a d. c. Voltage. It uses a differential amplifier to minimize the error caused by the size of the light spot on the oscilloscope, therefore it has higher accuracy. Several acoustical experiments performed with this instrument, and the direc nonal characteristics obtained, the demonstration of the validity... This paper describes an instrument for the free field reciprocity calibration of hydrophones in ordinary ater tank by pulse technique. The instrument measures the amplitude of the pulse by comparing it with a d. c. Voltage. It uses a differential amplifier to minimize the error caused by the size of the light spot on the oscilloscope, therefore it has higher accuracy. Several acoustical experiments performed with this instrument, and the direc nonal characteristics obtained, the demonstration of the validity of the reciprocity relation and the frequecy responses of some hydrophones are also presented in this paper. 本文介绍了用在普通水池中进行水听器自由场脉冲互易校准的仪器，该仪器用直流 比较法测量脉冲幅度，并用分差放大器减小示波器光点的误差，因此有较高精度。 文中还介绍了用该仪器进行的声学实验，给出了几种水听器的方向特性，互易关系 正确性的验证以及频率响应。 This paper essentially introduces the method of calibrating the error of linear IC tester, including the calibration for various ranges of input offset voltage, input offset current, input bias current, open-loop DC voltage gain and common mode rejection ratio. It introduces some practical circuits, at the same time indicates the operating steps, the necessary processes and the results of calculation. 本文扼要地介绍了线性集成电路测试仪的校准方法。其中包括输入失调电 压各挡量程的校准；输入失调电流各挡量程的校准，输入偏置电流各挡量程的 校准；直流开环增益各挡量程的校准以及共模抑制比各挡量程的校准。在介绍 实用电路的同时，给出具体操作步骤，也给出了必要的计算过程和结果。 This is a thesis that deals with the design of the mathematical model of the instruction arithmatic unit in the reversible automatic speed control (ASC) system consisting of Thyristors-d . c. Motor.The Boolean expressions of all functions of the control instruction in the reversible ASC system consisting of Thyristors d.c. Motor have been produced by analyzing the operation conditions and control programs in typical systems and making use of the logical speculation in Boolean algebra. And according to these... This is a thesis that deals with the design of the mathematical model of the instruction arithmatic unit in the reversible automatic speed control (ASC) system consisting of Thyristors-d . c. Motor.The Boolean expressions of all functions of the control instruction in the reversible ASC system consisting of Thyristors d.c. Motor have been produced by analyzing the operation conditions and control programs in typical systems and making use of the logical speculation in Boolean algebra. And according to these Boolean expressions, the construction diagrams of each instruction have been made, and the design of the mat hematical model of the systematic instruction arithmatic unit has been accomplished. 本文论述可控硅直流可逆自动调速系统中指令运算器数学模型的设计。通过对典型系统运行状态和控制程序的分析,借助于布尔代数推导出可控硅一直流电动机可逆自动词速系统中符有关控制指令函数的布尔表达式,并据之设计出各指令的结构框图,完成了系统指令运算器数学模型的设计。 << 更多相关文摘
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