查询词典 linear switching

According to the definition and the distribution of VSR's voltage space vector, the introduction of a rule-based SVPWM current control strategy, with non-fixed switching frequency and dual hysteresis loops, that obviously improves the performance of current control. Based on two kinds of control strategies of VSR under unbalanced grid condition, the introduction of a new VSR control strategy featuring undamped-oscillation that simplifies the controller structure and effectively improves VSR's performance under unbalanced grid condition. A systematic description of the state switching in trilogic PWM signal generation of threephase CSR by using the conversion between bilogic and trilogic switching functions.

作者在如下工作的基础上对PWM整流器的一些关键问题提出了自己的研究思路、观点和方法：根据PWM整流器网侧矢量关系，直观地描述了其四象限运行的基本原理及特征；定量分析了VSR、CSR的PWM换相过程及波形特征；引入等效变压器模型并详细分析了VSR、CSR基于d—q模型的动、静态特性；提出了满足四象限有功、无功运行指标时的VSR交流侧电感设计方法；并提出了依据控制系统跟随性和抗扰性性能指标设计VSR、CSR直流侧储能元件的参数计算方法；在研究了VSR电流控制策略基础上，提出了影响VSR电流控制的几个要素，并进行了定量分析；根据VSR空间电压矢量的定义及分布，提出了基于规则控制的不定频滞环空间矢量PWM电流控制策略，并由此提出了具有双滞环特性的不定频滞环优化SVPWM电流控制策略，有效地改进了滞环PWM电流控制性能。

All of these power MOSFETs are designed for applications such as switching regulators, switching convertors, motor drivers, relay drivers, and drivers for high power bipolar switching transistors requiring high speed and low gate drive power.

所有这些功率MOSFET的设计，例如开关稳压器的应用，开关转换器，电机驱动器，继电器驱动器，驱动器和高功率双极晶体管的开关速度和低要求高栅极驱动力。

According to switching power supply's theory, the circuit analysis, and transformer's foundation, it has analyzed switching power supply's principle of work from the electric circuit work's perspective, and factures a kind of switching power supply circuit diagram, which is quite simple, and is reliable for the operation, and is suitable for using commonly in the present life .

再根据开关电源的理论、电路分析、及变压器的基础，从电路工作的角度分析了开关电源的工作原理，制作了一种比较简单，工作可靠，且适用于目前生活中常用的开关电源。

The basic relationship between the the first half-wave peak value of transient current and the initial firing angles is found by means of analytical method.The practical method is put forward to determine the initial two-phase and the third phase firing angles with the limiting value and the space vector varying track of transient current.And then the subsequent series of firing angles with the even step are calculated by using the speed at the time of re-switching.The suppressive effect to the inrush current is verified with simulation and experiment of rapid soft re-switching control,by which the influence of different speed to rapid soft re-switching course is analyzed besides.3 To analyze the power loss for typical periodically variable running load and deeply study the energy-saving principle and control mode of the intermittent power supply approach. Futhermore,the novel integrated energy-saving control technique is developed on base of the intermittent power supply approach.

通过解析方法找到快速软投入初始触发角与瞬态电流首半波峰值加热板之间的基本关系，进而提出了由限流值和空间向量轨迹确定初始两相和第三相触发角的方法，并以固定步长均匀递减的方式由投入时转速计算出其它后续触发角；结合仿真和实验验证了快速软投入对冲击电流的抑制作用，并分析了不同转速下投入时对电源快速软投入过程的影响。3对典型周期性变工况负载特性进行能耗分析，深入研究断续供电节能机理和控制模式，并进一步发展了以断续供电为主的综合节能控制新技术。

The basic relationship between the the first half-wave peak value of transient current and the initial firing angles is found by means of analytical method.The practical method is put forward to determine the initial two-phase and the third phase firing angles with the limiting value and the space vector varying track of transient current.And then the subsequent series of firing angles with the even step are calculated by using the speed at the time of re-switching.The suppressive effect to the inrush current is verified with simulation and experiment of rapid soft re-switching control,by which the influence of different speed to rapid soft re-switching course is analyzed besides.3 To analyze the power loss for typical periodically variable running load and deeply study the energy-saving principle and control mode of the intermittent power supply approach. Futhermore,the novel integrated energy-saving control technique is developed on base of the intermittent power supply approach.

通过解析方法找到快速软投入初始触发角与瞬态电流首半波峰值之间的基本关系，进而提出了由限流值和空间向量轨迹确定初始两相和第三相触发角的方法，并以固定步长均匀递减的方式由投入时转速计算出其它后续触发角；结合仿真和实验验证了快速软投入对冲击电流的抑制作用，并分析了不同转速下投入时对电源快速软投入过程的影响。3对典型周期性变工况负载特性进行能耗分析，深入研究断续供电节能机理和控制模式，并进一步发展了以断续供电为主的综合节能控制新技术。

The method includes the following steps: step A, the terminal accesses, registers and loges on to IM core net through at least two different wireless IP access networks; step B, in the process for carrying a VoIP communication through at least one of two IP access networks, if the terminal meets the pre-set switching condition between the IP access network, a switching request in the IMS domain is initiated; step C, the speech calling continues application server receives the switching request, and switches the signaling between the terminal and the VCC application server to the other IP access network except the IP access network loading the VoIP communication at present in at least two IP access networks.

本发明提供一种IMS域内VoIP的切换方法、IMS系统、终端及VCC应用服务器，该方法包括：步骤A，终端通过至少两个不同的无线IP接入网接入并注册登录到IMS核心网；步骤B，在终端通过至少两个IP接入网中的一个进行VoIP通话的过程中，如果终端满足预设的IP接入网之间切换条件，则发起IMS域内的切换请求；步骤C，语音呼叫连续应用服务器接收切换请求，并将终端与VCC应用服务器之间的信令切换到至少两个IP接入网中、除当前承载VoIP通话的IP接入网之外的其中一个IP接入网上。

Put power breakerin switching off position, make tests of switching on and switching off for breaker with operation system,relay protection tripping and emergency pushbutton tripping were 21 correct.

用操作系统对断路器进行合闸，跳闸试验，用继电保护跳闸，用事故按钮跳闸均正确。

The result of switching function experiment shows: the mean switching RT of the participants with low arithmetic ability is longer than that of the participants with high arithmetic ability both on common figures condition and on special figures condition, and the mean switching wrong rate of the participants with low arithmetic ability is higher than that of the participants with high arithmetic ability on both conditions.

转换实验研究结果表明：在常见图形和特殊图形两种条件下，数学能力低的儿童，其平均反应时均长于数学能力高的儿童；数学能力低的儿童，其平均错误率均高于数学能力高的儿童。

At the same time, we prove that the best linear unbiased prediction of a linear predictable variable Qy and the best linear unbiased prediction βn=(X"sV-1Xs)-1 X"sVs-1ys of regression coefficients of the finite populations βn=(X"V-1X)-1X"V-1y are admissible under matrix loss function and in the class of the linear predictions and the class that contains all predictions, and under quadratic loss function in the class of the linear predictions.

在线性预测类和一切预测类中是可容许预测，而在二次损失函数下其在线性预测类中是可容许预测。

Linear alkyl benzenes and linear alkyl dimethyl benzenes, prepared by the alkylate reaction of linear alpha olefin with benzene or dimethyl benzene which were sulfonated by chlorosulfonic acid and then neutralized to produce linear alkyl benzene sulfonates and linear alkyl dimethyl benzene sulfonates.

本文以一定链长的直链α-烯烃分别与苯和混合二甲苯为原料制备了直链烷基苯和烷基二甲苯，经氯磺酸磺化，中和可得到具有一定链长的直链烷基苯磺酸盐和直链烷基二甲苯磺酸盐。

Vishnu entered a dark fourth dimensional dream that did not support his field or continued life.

毗瑟挐进入了一个第四密度的黑暗梦想，那里并不支持他的能量场或继续生命。

Leaders and decision-making persons use it to collect the data, including the information of unit work, handing in fee, oweing fee, prepaying fee,changing and afterpaying and account transfering of joining-insurance employee, and account paying of all kinds of insurances from hospitalization insurance institutions.The collected data is picked up, organized, switched and showed to user.

该子系统主要面向各级领导、决策分析人员；从各个医疗保险经办机构和定点医疗机构采集数据，包括在各个医疗保险经办机构处理的单位办公信息，单位缴费、欠费、预缴费信息，参保职工变更信息，参保职工增减变动信息，参保职工补缴信息，参保职工帐户划拨信息：包括各定点医疗机构处理的各险种帐户支出信息，各险种的统筹金支付信息等；将采集的数据提取，组织和转换，然后展示给用户。