线性开关

A design method of switched-currentladder filters using the bilinear transformation is proposed.

开关电流梯形滤波器的双线性变换设计孟相如，邱关源（西安交通大学电气系，西安710049）本文提出了一种用双线性变换进行开关电流梯形滤波器设计的方法。

Companies to adopt international advanced industrial automatic placement machine assembly technology, integrated circuit manufacturing equipment, production of various series of infrared photoelectric switch, proximity switches, inductive, high temperature, capacitive, Hall sensors, safety explosion-proof magnetic switches, Isolation amplifier type, permanent-magnet sensors, analog linear displacement, liquid level sensors, textile weft detection device, wire break detector, hot metal detectors, welding phase sensor, color code, fiber optic, security screens, ultrasonic sensors, gear , speed sensor, pressure, electrode-type coal-bit sensors, rotary encoder, two-way cord running series switch, counter relays, solid state relays, switching power supply, isolation transmitter, welding power rectifier, thyristor modules, etc.

公司采用国际先进工业自动贴片机装配技术，集成化电路制造设备，生产各种系列红外线光电开关，接近开关，电感式、耐高温、电容式、霍尔式传感器，安全防爆磁性开关，放大器分离型、永磁感应器、模拟量线性位移、液位传感器、纺织探纬器、断丝检测器，热金属检测器，电焊相传感器，色标、光纤、安全光幕、超声波传感器，齿轮、速度传感器，压力、电极式煤位传感器，旋转编码器，双向拉绳跑编开关，计数器继电器，固态继电器，开关电源，隔离变送器，焊机电源整流桥、晶闸管模块等产品。

The results of numerical experiments, using the four-dimensional variational data assimilation system of the nonhydrostatic mesoscale model MM5, show that: the tangent linear model and adjoint model conducted by keeping the "on-off" switches the same as the basic state, can provide a good approximation of the first-order information to the NLM perturbation and a good descent direction for the minimization procedure; switching on and off at every other time step in the Kuo cumulus parameterization scheme don"t impact the convergence rate of cost function; the existence of the switches don"t impact improvement to the MM5 model rainfall prediction because that not only specific humidity ,but also wind, temperature and pressure are assimilated into the model.

非静力中尺度数值模式MM5的四维变分资料同化系统进行的数值试验结果表明："开关"变量保持与基态一致，所构造的切向线性模式能够提供关于非线性模式扰动的一阶近似，伴随模式所计算的梯度值能够为最小化过程提供较好的下降方向；郭氏降水参数化方案中对流每隔一个积分步的交替发生并不影响目标函数最小化的收敛速度；"开关"变量的存在也不影响将风、温度、气压和比湿结合起来同化对MM5降水预报准确性的提高。

Meanwhile the linear operational mode and nonlinear operational mode of PCSS are analyzed In chapter 3, after simulating time-space distribution of electron and hole in photoconductor,the relations of laser energy,laser character and photoconduction are analyzed and the fundamental principles of nonlinear phenomenon is introduced.

在第三章中，通过研究各种重要的复合机制，漂移和扩散作用等对光导开关光电导响应的影响，建立了线性模式下的瞬态响应模型，模拟得到光导开关输出电脉冲特性曲线。

In Chapter 4, we study the problem of output regulation for a class of switched linear systems.

第四章研究了一类带有扰动的线性开关系统的输出调节问题。

The results show that the propagation delay is less than 1ns, the ratio of input and output impedance is up to 10〓, realizing a little insert dissipation at high-speed operation, laying a solid foundation for the materialization of high-resolution one-way analog switch A/D converter. 2. A new structure of the high-speed CMOS voltage comparator circuit for the improved nonoffset cancel circuit, which can satisfy the needs of the 8-bit linearity.

模拟结果表明，基于CMOS工艺实现的BiCMOS单向模拟开关的传播延迟小于1ns，开关的输入输出阻抗比高达10〓以上，实现了高速工作下的极小插入损耗，为实现高精度单向隔离模拟开关分步法A/D转换器奠定了基础； 2、基于满足八位线性要求的前提，本文提出了一种改进的无失调取消电路的高速CMOS电压比较器新结构。

A compensatory voltage vector based overmodulation method for four-switch SVPWM was presented for improving the utilization ratio of the DC voltage.

指出四开关SVPWM最大线性调制比只有六开关时的一半，为提高直流电源电压的利用率，提出基于补偿电压矢量的四开关逆变器SVPWM过调制方法。

However, when the switches are working as linear mode, the relations between the wide output electromagnetic pulse and biased dc voltage, trigging condition, and a function between the transforming efficiency and biased dc voltage, trigging condition need father research.

然而，当开关工作于线性模式时，开关的输出电脉冲的宽度与偏置电压和触发条件的关系、开关的转换效率与触发条件及偏置电压确切关系还需进一步研究。

A brief introduction about the structure and foundamental rotation theory of switch unit in switched reluctance motor is given.

在线性模式的基础上，对开关磁阻电机的转矩进行了理论分析和计算；由此提出了开关磁阻电机的两种控制方式：低速斩波控制和高速单脉冲控

According to the problems above, this paper analyzes how to design current filter under the situation of Linear Second-Side Power System and SSPS; how to use Amorphous Cores in the design of HVIT and the advantages it brings; why "series-wound problem" happens and the relationship with SSPS switching frequency; how to improve power losses of LSPS and how to use PCB for the thermal design of SSPS.

论文针对以上四个问题，详细分析在恒功率型线性以及开关二次侧情况下电流滤波网络的设计；功率等级提升情况下，非晶材料在高频高隔离变压器中的应用及优势；&串扰&问题的原因以及二次侧工作频率的影响；线性二次侧的损耗改善方法以及开关二次侧利用PCB散热的实现。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。