文献检索之数据库检索

文献检索作业二 —— Group work

我们小组为第六组，共7人，分别是姚佳（20081831）、叶玉胜（20081832）、应力文（20081833）、赵兰（20081834）、赵鑫（20081835）、郑玉（20081836）、朱孟驹（20081837），共同承担此项数据库检索小组作业。

关键字：电池模型、计算、模拟；model 、simulation 、battery

检索步骤：

检索过程分析：

经共同讨论分析，我们在检索过程中实行的是分类讨论的方法，首先确定已知课题的主题，分析课题，提取概念。①提取主要概念(关键词)，区分

出辅助概念、禁用词；②扩展

主要概念；③构建检索策略。

例如我们可以把battery 作为

主关键词，剩余的model 和

simulation 作为辅助概念词。根据前面确定的检索词在检索条中编写检索式，当检索结果不理想时，需调整检索策略时因

设立检索课题

选择数据库 确定检索词

编写检索式 分析判断检索结果 二次检索 结果输出 SCI 检索界面

初始的检索策略而异，即注意初始检索状态而定，扩大或缩小检索范围，同时进行二次检索。

根据练习琢磨可得在编写检索词时要尽可能的减少同义词，注意增加检索词的限定范围，检索字段可以采取如下的方式：

①全文→主题→文摘→篇名的顺序加以填写；②以主题→文摘→篇名；③文摘→篇名的顺序加以填写，可以有效的帮组我们获得更多的信息。若初次检索获得的范围太大，那就必须继续增加限定词，或者改变控制文献发表的年代等条件，缩小范围，从而找到符合要求的精准信息。最后输出自己需要的文献。

检索结果：

1. A simulation model to predict battery life based on projected load profile

Author：Krahe.R.P （检索于EI）

Abstract：Battery powered detection sensors and actuators often present non-uniform, pulsed, periodic load characteristics to their battery sources. However, published battery life data is generally available only for uniform load current or resistance. This battery life data cannot be used directly to determine battery life under typical specific battery load profiles. Furthermore, it is desirable to predict battery life early in the product design process, before the exact final load profile is known, when actual testing would be impossible without true-to-life loads. A simulation model is presented to predict battery life for a given load profile. Input to the model is the estimated load characteristics. Output from the model is battery voltage versus time and projected battery life. The model itself is based on extensive battery testing under various periodic load conditions, The model was implemented on a 486PC using C++ programming language. To run the simulation, the load profile is described in a script file. Load resistance or load current can be specified. Wave shape is described as a piecewise combination of linear, exponential, and trigonometric segments. The output voltage is displayed graphically, and can also be given at any point in time. The life is displayed numerically. Multiple simulations can be run by changing the script file. The validity of the model is demonstrated by comparing the projected output voltage profile and battery life with actual sample data.

通过阅读此篇论文，我们发现通常检测传感器与执行器通常呈现不均匀状态。然而，出厂的电池寿命数据通测定的是均匀负载电流和电阻。这种电池寿命数据不能直接用于确定描述电池在典型的特定的负荷特性中的寿命。此外,它是理想的预测电池寿命，早期在产品设计过程中,准确的决赛之前,当载荷剖面测试成为可能地负载，给出了仿真模型来预测电池寿命对于一个给定的负荷。输入模型估计的负荷特点，从这个模型的输出电压随时间来描述电池寿命。该模型本身是基于广泛的电池测试各种周期性负荷条件下而产生的,对该模型进行了486Pc的试用，利用c++程序设计语言加以控制。运行仿真、负载剖面中描述一个脚本文件。负载端电阻负载电流可以被指定或被描述为一个波形分段组合的线性、指数、三角片段。图形显示的输出电压,也可以在任何时候。多个模拟实验可以通过改变脚本文件。该模型的有效性是比较反映输出电压轮廓和电池寿命与实际样本的数据。

从中我们可知想预知电池的寿命可以通过在假设的特定环境中模拟来测取，测定的往往是它的最大值，实际的往往要小于测定的寿命数值。

2.Battery management system based on battery nonlinear dynamics modeling

Author: Szumanowski, A; Chang, YH （检索于SCI）

Abstract: This paper proposes a method to determine the voltage and the battery internal resistance as function of time, it was successfully able to describe the state (SOC), since the SOC = f (t). The model is based on the battery discharge

characteristics under different constant and the current experiment carried out. This further method to determine the battery SOC based battery modeling results.

Temperature on battery performance is analyzed and, based on laboratory-tested formula for calculating the theoretical background. SOC battery SOC algorithm is

described in detail the signs. Algorithm battery "network" effect of temperature SOC logo can be applied to practical microprocessor. Characterization of a nickel-metal hydride batteries used in the modeling method. In fact, this method can also be used for different types of modern batteries, and lithium batteries, if the test data required are available.