查询词典 current drive

However the mechanism puts current officeholder drive in a lot of malpractice.

然而目前的公务员激励机制存在诸多弊端。

46 There are many currents in the oceans around the world but there is one, a master current that's the drive belt of our weather systems.

全球有许多的洋流，不过有一条影响全球气候系统的最主要的洋流。

By analyzing the pulse transformer and ideal drive electric current wave, we try to improve the rate of changing-over, discuss the damped oscillation, point out existing circuit design error, and working a new circuit design which can reduce the common circuit circulation and switch loss.

通过对脉冲变压器及理想激励电流波形的分析，如何提高转换速率，阻尼振荡予以讨论，指出目前存在的设计误区，做出减少共态导通与开关损耗的新设计。

A stand-alone solar LED lighting system usually consists of a DC/DC converter to convert the floating battery voltage into a constant current to drive the LED.

独型太阳能LED照明系统，於白天时用铅蓄电池，蓄存太阳电池阵所产生之电，并於夜晚点LED灯具。

First, ringing can drive voltage and current waveforms outside the forward biased and reverse biased safe operating areas of the power switches causing device reliability degradation or near instant failure of the power semiconductors and other components.

LCL-816G 传感器模型是由四个电阻元件组成的桥，需电压激励。将5V 激励电压加在传感器高端，施加900g 最大激励时，满刻度输出摆幅为±10mV 差分信号。该小差分信号被双运放仪表放大器放大。根据电路精度要求，选择一个12位 A/D 转换器。

Induction watt-hour meter is the principle of electromagnetic induction to voltage, current, phase into a magnetic moment, and promote aluminum rotating disk, the disk axis gear-driven drive device degrees of drum rotation, that is, the process of turning is the cumulative amount of time to process.

感应式电能表是采用电磁感应的原理把电压、电流、相位转变为磁力矩，推动铝制圆盘转动，圆盘的轴带动齿轮驱动计度器的鼓轮转动，转动的过程即是时间量累积的过程。

Under drive of market economy, news amusement becomes current mass media general phenomenon of activity. Strike etc.

在市场Economic经济的驱动下，新闻的娱乐化成为当今大众传播活动中的普遍现象。

The customer can lower the drive current through the crystal by .increasing the capacitor value on the oscillator output while decreasing the value on the oscillator input, increasing the value of a series resistor, or decreasing the gain.

客户端可把振荡电路放大器输出端的负载电容增大，同时降低输入端的负载电容(串联后等效电容须与改变前相同)，增大与晶体串联的电阻阻值，或降低放大器的增益，来降低驱动晶体的电流。

ABSTRACT Aiming at problems of trans-vector controller in a vehicle-carried induction motor such as variable rotor and stator resistance following motor temperature, and their inductance varying with flux saturation degrees. Firstly, CSI and VSI are introduced, for CSI, it can hold the advantages both FOC and DTC using stator flux directional, PI parameter and simulation are also introduced. Secondly, equations of IM in the synchronous rotary frame and its static counterpart, as figuring in the saturation condition of magnetic field, are dealt in this paper and the simulation results are presented. Thereafter, the parameter designing of PI trans-vector controller is processed, which features the non-linear model. In practical realization, as neglecting the dynamical change of motor inductance, this paper employs online modification of inductance parameters, according to the flux saturation, then transforms the non-linear equations into linear ones, and so compacts the structure of controller. Thirdly, in view of the maximum torque output is extraordinary requisite when Electrical Vehicle start up, accelerate, and overtake, this paper issues the maximum torque when both inverter and battery capacity is corporeally definite. Fourthly, on-line differentiating and analyzing both rotor's time constants and its flux by using the expanding order reduction and discrete Kalman filter equation are fathomed, in order to realize high-performance trans-vector algorithm, and also the simulation results are presented. Fifthly, the close-loop regenerative brake system, when the EV's torque is set constant, is deduced; at the same time, unification of electric drive model and brake model is executed. Combined with maximum charge current demands, the mathematical model for online yielding torque as a demand.

本论文针对车载异步电机在矢量控制器所遇到的问题：定转子电阻随温度变化及随电机饱和程度变化的转子电感及定子电感而影响电机调速性能提出一套完整的解决方案：分析了电流型逆变器和电压型逆变器在实现矢量控制时控制器参数的计算，分析出对于电流型逆变器在采用定子磁场定向时，其性能同时具有矢量控制和直接转矩控制两者的优势，并对电压型逆变器在转子磁场定向下的模型进行了仿真研究；建立异步电机非线性模型，推导出考虑磁饱和时异步电机在同步旋转坐标系及静止坐标系下的方程，并做出了仿真结果，建立异步电机在非线性模型下的矢量控制调节器的PI参数设计，在实际应用中，若忽略电机电感的动态变化，可以根据当前的磁路饱和状态而在线修正电感参数，从而将非线性方程线性化，降低控制器的复杂度；考虑到电动汽车在起动和加速超车时需要电机有最大转矩输出，本文讨论在逆变器容量一定和电池供电能力有限的情况下电机最大转矩输出问题；推导了异步电机扩展降阶、离散卡尔曼滤波方程在线辨识转子时间常数和转子磁通，用于实现高性能的矢量控制算法，并给出了仿真结果；推导出了电动汽车恒转矩给定的闭环回馈制动系统，实现了电动控制模型和制动模型的统一，而且结合铅酸电池最大充电电流的要求，为制动转矩在线给定建立了数学模型；设计了基于双DSP系统的高性能矢量控制器软硬件框图，并以大量实验数据说明矢量控制在电动汽车应用的实际应用状况。

A detailed analysis of the main circuit introduction, control method and working principle of the direct-drive wind energy conversion system are given to introduce the two important parts a of this paper: First part is the control method of the multiple boost convertor, the important instantaneous current control method of this paper is given through the analysis of the main circuit structure, control method and working principle. Then a steady-state analysis for low-frequency, a high-frequency component analysis, and a closed-loop tracking performance analysis for dynamic response are provided to analyze the method proposed; And the second part is the control method of invertor.

在系统变流器整体结构分析的基础上，引出本文重点研究的两个变流环节的控制：第一部分是系统升压斩波器的控制，通过分析相关主电路结构、原理，建立了数学模型，引出本文重点研究的瞬时值控制策略的概念和具体实现，并对升压斩波器的瞬时值控制策略进行了详细的高频、低频模型分析和稳态、动态性能分析；第二部分是系统并网逆变器的控制，通过对逆变器主电路的数学建模和控制要求分析，研究了并网逆变器的瞬时值控制策略，包括电感电流控制内环和直流电压控制外环的具体设计和实现方法。

This brought fixed cost, but it also is meant at the same time use a source to won't make you singlehanded assume a problem.

这带来了一定的成本，但它同时也意味着使用开源不会让你独力承担问题。

He gained a small fortune in real estate.

他在房地产上发了一笔小财。