查询词典 oscillatory circuit

Core saturation and the rotor bar skin effects were directly taken into account in the field calculation. The adopted circuit equations are suitable for describing the stator windings and the special rotor-bar connections of BDFM. The waveform of supplied voltage source may be an arbitrary. Three-dimensional end effects were considered in the circuit parameter corrected by classical formulas. In addition, the coupling and constraint equations were used to handle rotor rotation without any process of remeshing.

其特点是：铁心饱和以及转子导条集肤效应可以直接在场的计算过程中加以考虑；采用的电路方程可以方便地处理无刷双馈电机定子绕组和转子端环的各种特殊连接方式，电压源可以是任意电压波型；三维端部效应可以通过传统的方法在电路参数中加以修正；采用耦合与约束方程来处理转子转动问题，而无须不断地对转子重新进行刨分。

When designing the step motor drive circuit of 5 phase 10 pat,89C2051 is adopted as the Loop allotter. The VMOS is adopted in power elements. It is designed as chopper-type constant current circuit.

设计五相十拍步进电动机驱动电路时选择了89C2051作为环形分配器，而功率器件选用电压型的VMOS管。

First it produces the pulse signal by the multivibratorwhich is consisted of 555 timer and send in the detecting coil to form the alternating magnetic field, then it asopts UGN3503 linear half-effect as prode to the magnetic field change into the voltage signal change,after enlargement electric circuit and peak value examination electric circuit,the signal be treated to send into ADC0809 modulus converter change moduluses, then the digital signal after the modulus converter is changed is sent into AT89C51one-chip computers afterwards, after the digital filter, AT89C51one-chip computers afterwards compares the data to the reference voltage and judges whether to have detected the metal and alarm.

这个系统是以AT89C51单片机为核心，首先由555定时器构成多谐振荡器产生脉冲信号送入探测线圈以形成交变磁场，然后经过线性霍尔器件UGN3503将磁场变化转换为电压信号的变化，经过放大电路和峰值检测电路，经数模转换之后输入到单片机中，由单片机对数据进行软件滤波之后，与基准值比较之后，判断是否存在金属和报警显示。

First of all, we analogize out the calculation formula of short circuit current in the distribution systems with dispersed generations through basic circuit theory.

文中首先以电路分析原理推导出含有分散式电源之配电系统的各种短路故障电流计算公式，续由这些公式分析在甚麼情况下的短路电流会最大以及并联位置和产生之短路电流的关系如何，最后利用电脑程式模拟并验证推论结果的正确性。

ABSTRACT: With the development of the times, digital electronictechnology has been popular in all of our lives, work, research,and all fields. This paper introduces a NC DC power supply, thepower consists of analogue power supply, display circuit, controlcircuit, digital-to-analog converter and circuit amplifier.

随着时代的发展，数字电子技术已经普及到我们生活，工作，科研，各个领域，本文将介绍一种数控稳压电源，本电源由模拟电源、显示电路、控制电路、数模转换电路、放大电路五部分组成。

All these analyzation are useful to guide the circuit design and help to optimize the circuit design and save power.

这些分析指导了后续电路的设计，并优化了整体调制器电路的性能和功耗。

This paper introduces the performance on probe of Zn based Semiconductor Cl2 sensor, and designs the transmission circuit by using logarithmic and antilogarithm circuit.

本文以Zn基半导体氯气传感器为探头，分析了其性能，通过运用对数电路、反对数电路设计了其变送电路，使其具有线性的输出，达到直读的目的。

First , measure the open circuit voltage and short circuit current to get the current system impedance, then force the apparent load impedance to match it to make the solar system working on maximum power point.

而如何有效的取得太阳电池的开路电压及短路电流，以便正确计算出太阳电池的内部阻抗则为本论文研究重点。

In order to eliminate integration drift in 3-phase alternating large current measurement apparatus, the substitution of inertia link (approximate integration circuit) for the integration circuit is proposed by our Research Group.

为了解决三相交流大电流测量装置中的"积分漂移"问题，我们科研组采用惯性环节取代积分电路。

The method (700) and circuit board panel (600) of the present invention substantially eliminate assembly-line delamination and sagging for circuit board manufacturing.

本发明的方法（700）和电路板板料（600），在电路板制造中基本上消除了装配线的脱层和下垂。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。