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In the light of cost index and pollution degree, the characteristics of kinds of pulp are analyzed in detail, and the GP pulp which is low cost, high-yield, no-pollution is chosen as the material of tableware. Based on material element analyzed, shaping technology is designed, the to and for single plane shaping equipment which is high shaping quality, high production efficiency and is easy to automatize is chosen. All kinds of measure are taken to solve the problems which are inequality in the shaping process of GP pulp, and dosage which matches with GP pulp is chosen. Some ways of fixing shape and heat up are analyzed, the technology of saving energy of heat pressing to fix shape being composed of oil heat and only one fixed shape in the mold is applied, with which it is high production efficiency, low cost to fix shape effectively, which saves energy 30 percent. In order to make the production line meet with material of GP pulp, measure are taken to solve the problem of pulp adhered to netlike molding which can lead to carry material difficult, the structure of fully automatic equipment is renovated, the loaded beam is optimizationally designed to make equipment structure compactand improve location precision and products quality. According to technologic flow and actual characteristic, Omron PLC is chosen as the core of the control system, proximity switch as detect unit take the place of touch switch, software is designed reasonably according to time order figure, hardware is simplified, the reliability of system is advanced, the stability of system is assured to make production order. Intelligence neuron PID system is studied theoretically which is made up of both neuron with self-organizing and self-learning function and ordinary PID with the characteristic of the simple structure and high stability, which can automatically tune the parameter with the change of system parameter, remain perfect performance.

按成本指标和污染程度分析各浆料的特点，选择低成本、高得率、无污染的磨石机械浆为原料，在原料组分分析的基础上，设计成型工艺，选择成型质量好、生产率高、易实现自动化的往复式单板成型机，采取各种措施解决GP浆成型不均匀的问题及选择与机械浆相匹配的助剂；分析几种定型方式和加热方式，采用定型效果好、生产率高、成本低的油加热与模内一次性定型相结合的热压定型节能技术，节能30％；为了使生产线适应磨石机械浆原料，采取相应措施解决由于粘网造成物料转移困难，对全自动设备结构进行改进设计，着重对物料传送系统的关键部件——承载梁的进行优化设计，使设备更加紧凑合理，提高设备的定位精度和产品质量；根据生产线工艺流程和现场特点，选用OMRON CPM1A型PLC为主核心，接近开关作为检测元件，替代有触点开关，选用可编程终端代替常规面板按扭，并按照时序图科学合理地设计软件，有效地简化系统硬件构成，提高系统的可靠性，保证系统的稳定性，从而使生产更加通畅有序；从理论上探索将神经元应具有的自组织、自学习要求与PID控制结构简单、稳定性好的全自动纸浆模塑餐具生产线的研究特点结合起来，构成神经元自适应PID控制器，当参数的变化时，系统能自行参数整定，保持优良的工作性能指标，满足实际需求。

In order to solve the application problem of conduction heating machining, this project investigates some problems, such as dynamic characteristics of heating power, features of circuit current and voltage, arc discharge states and so on. It also studies control characteristics of Uni-phase or Tri-phase Direct Current Power Supply and Inverse Switch Power Supply. A High Frequency Inverse Switch Commutate Power Supply is developed.

为了解决导电加热切削的应用问题，从加热电源的动态性能和回路的电流、电压特性及电弧放电状态等方面进行研究，分析比较了单、三相交直流电源和逆变开关电源的特点和控制特性，研制了高频逆变开关整流电源。

BSIT compound device is developed. This device consisting of BSIT and BJT has many advantages, such as high switch speed, large power capacity and high h+ temperature stability. It can be used in low voltage switch regulator, pulse power source, instrument enduring a bad environment, and so on.

本文研制了BSIT组合器件，它是由BSIT和BJT组合而成的一种复合器件，具有开关速度高、功率容量大、h_的温度稳定性好等优点，可用于低压开关电源、优质脉冲功率源和高低温恶劣环境下的仪表等场合。

Standard fare on the Cobra is two select pickups of your choice, a 5-way switch and a push/pull switch on the tone knob.

在眼镜蛇上的标准的费用在明暗拉手利上是你的选择的二个选择小卡车，一个 5 方法的开关和推/拉开关。

By using this combined curve, the widening or decrease of the track gauge is 0.06mm on the actual switch point, 0.78mm on the planing Start point if the longitudinal displacement of the switch rail is 20mm.

采用所选线型时，若尖轨向前或向后纵向移动20mm，尖轨实际尖端位置轨距减小或增加0.06mm，尖轨刨切起点位置轨距减小或增加0.78mm。

The article presents the developing condition of PWM and SVPWM first.Then the theory of SVPWM is discussed in detail.The SVPWM is based on the thought of magnetic chain tracking.It makes the ideal magnetic chain circle of three-phased sysmmetry electric motor supplied by three-phased sysmmetry sine wave voltage for basis,uses the practical magnetic chain vector formed by the different switch modes of three-phased inverter to track the basic magnetic chain circle.During the course of tracking,the inverter changes the switch modes properly to form the PWM waves.Then the modulation wave of SVPWM is analyzed in detail.The modulation wave of SVPWM is implicit,but the analogous modulation wave in A-B-C axis needs to be calculated in order to expose the internal relation of SVPWM and SPWM.That is to show the implicit modulation wave of SVPWM. SVPWM actually is a transformed SPWM ruly sampled by the modulation wave which is injected by the zero prefaces based on space vectors.

本文首先对脉宽调制技术的发展现状进行了综述，在此基础上分析了电压空间矢量脉宽调制技术的发展现状；接着对空间电压矢量脉宽调制技术的基本原理进行了详细的分析和推导，SVPWM是基于磁链追踪的思想，它以三相对称正弦波电压供电下三相对称电动机定子理想磁链圆为基准，由三相逆变器不同开关模式下所形成的实际磁链矢量来追踪基准磁链圆的，在追踪的过程中，逆变器的开关模式作适当的切换，从而形成PWM波；然后详细分析了电压空间矢量脉宽调制技术的调制波，虽然SVPWM法的调制波是隐含的，但是为了揭示SVPWM法与SPWM法的内在联系，需要求出SVPWM在A-B-C坐标系上的等效调制波，也就是将SVPWM的隐含调制波显化；SVPWM实质是一种基于空间矢量在三相正弦波中注入了零序分量的调制波进行规则采样的一种变形SPWM。

A simulation research is conducted on the example of six-phase double star winding shifted by 30°synchronous motor.In order to investigate the control algorithm of multilevel inverter , high harmonics as well as its problems, a mathematical model of the control algorithm based on the voltage space vector is built. For the first time, the principle along boundary is introduced to confirm the chosen switch state when many switch states are corresponding to the same vector. Simulation analysis and hardware realization are conducted with the combination of diode clamped three-level inverter and five-level inverter.

建立了基于空间电压矢量控制算法的仿真模型；仿真研究中采用对偶小矢量搭配改善中点电位波动的问题；针对多个开关状态对应同一待选矢量的问题引入&循边原则&确定被选择的开关状态；对过调制问题进行了相应的处理：结合二极管嵌位式三电平逆变器和五电平逆变器进行了仿真分析和硬件实现。

This paper focuses on the implement of Internet Protocol quality of service based on certain packet switch processor in a layer 3 switch.

本文研究的重点是服务质量在具体包交换芯片上的实现研究。本论文主要分为以下四个部分：第一部分分析了声信息在网络传输的特点。

In High-avail, made a concept of Redundancy Manager, and put forward some ethernet ring structures on the base of it. We can find these meet different levels of Avail requirement. In Real-time, it made great improvement on traditional ethernet. Adopted switch technology, high-speed ethernet, full-Duplex port switch, data prioritisation, and VLAN technology.

在高可靠性方面，提出了冗余管理器的概念，在它的基础上形成的几种以太网环网结构，可以满足不同层次的可靠性要求；在实时性方面，对传统以太网加以改进，采用了交换技术、高速以太网技术、全双工端口交换的方式、优先级标志技术、虚拟网技术等新技术。

Using the front panel to fire any pad which has a red drag race switch turned on will simultaneously fire all others which have their red switch turned on.

使用前面板的消防任何垫，其中有一个红色拖曳种族开关开启时，将同时消防所有其他有他们的红色开关打开。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。