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In order to eliminate the influence caused by the nonminimum phase characteristic of a common Boost DC／DC converter, Viswanathan K has proposed a novel tristate Boost DC／DC converter. For enhancing performance, the statespace averaging model of this converter was first presented in this paper. Due to the nonlinear nature in this model, an inputoutput feedback linearization technique was adopted, and a complete controllable linear system was obtained. Then a statefeedback control strategy was designed based on this linear system. Simulation results show that the proposed control strategy can assure constant output voltage in a wide range, so as to realize the stability of the system during large fluctuation of power supply and load disturbance. Good dynamic performance can also be achieved.

针对 Viswanathan K为消除普通BOOST DC／DC变换器的非最小相位特性而提出的三态Boost DC／DC变换器，为进一步提高这种电路拓扑的性能，在建立了变换器状态空间平均模型的基础上，针对其多变量、非线性特点，采用输入输出线性化将其转化为一个完全可控的线性系统，在此基础上应用现有成熟的线性控制策略进行了控制系统的设计，并且采用MATLAB进行仿真验证，结果表明：这种非线性控制策略可以确保输出电压在大范围内恒定可调，且即使存在大范围扰动(输入电压和负载变化均较大)的情况下，系统也可以确保稳定性和良好的动态性能。

And then, the state of ERP and device management, which are adopted comprehensively, are explained.

接着对在当今企业广泛采用的企业资源计划系统及其设备管理系统的现状进行了阐述。

In order to study impact mechanical properties of the basalt fiber reinforced concrete, the BFRC specimens with 0、0.1% and 0.3% fibre volume content were prepared. The Φ100mm split hopkinson pressure bar apparatus was adopted tocarry out the impact compressive experiment. The dynamic stress-strain curves were obtained. The impact mechanics performance of BFRC were studied through analyzing the impact compressure strength and deformation.

摘 要：为了研究玄武岩纤维混凝土（basalt fiber reinforced concrete，简称BFRC）的冲击力学性能，制备了纤维体积掺量分别为0、0.1%和0.3%的BFRC试件，采用Φ100mm分离式霍普金森压杆（split hopkinson pressure bar，简称SHPB ）设备对BFRC试件进行了冲击压缩试验，得到了BFRC的动态应力应变曲线，从冲击压缩强度和变形两方面研究了不同应变率下BFRC的冲击力学性能。

Two schemes were adopted for investigating the concanavalin A-glycogen interaction on gold electrode surfaces, respectively.

采用两套方案分别考察了金电极表面凝集素伴刀豆球蛋白A与糖原的相互结合作用。

Which of these approaches is adopted depends on the concatenation of a number of factors.

这些方法中究竟采用哪一种，视若干相互联系的因素而定。

To solve the coupled wave function of nonlinear recording hologram, the linearization method was advanced, and two modulating models of refractive index were adopted, the convex curve and the concave curve.

采用折射率调制特性为上凸型和下凹型的调制曲线，提出了线性化求解非线性记录全息图耦合波方程的方法。

Two different Fabry-Perot cavities have been adopted: plane mirror cavity and confocal concave spherical mirror cavity.

采用了两种不同的Fabry-Perot腔体结构：平面腔镜结构和对称共焦球面腔镜结构；首先进行了理论分析，得出两种结构中折射率变化与干涉条纹变化的关系，然后分别对两种腔体结构下的测量系统进行实验研究，都可以探测到10-5量级的折射率变化量，结果基本令人满意。

In the years following that speech, Faulkner's work of ten adopted a lighter, more conciliatory tone

在那篇演说后的年代里，福克纳的作品多半使用一种比较轻松、和解的笔调。

A new method of improving thermal conductance gas analyzer was introduced,which adopted BP neural network.

介绍了利用BP神经网络对传统热导气体分析仪改善的新方法。

In this dissertation, refining grains, depositing conductibility carbon film on the surface of the particles and doping Mg~(2+) into the lattice of LiFePO4 were adopted to improve the electro-chemical performance of the cathode material.

本文运用了多种合成手段和分析技术，从材料制备、结构表征到电化学性能方面对磷酸亚铁锂进行系统深入的研究，制备出了性能良好的电极材料。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。