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muxinzi

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[交流] CV曲线面积的计算方法

请问CV曲线用origin积分求面积时,应该选择mathematical area 还是absolute area?积分的目的就是计算CV曲线包围的全部面积。该面积算出来用于计算电容,所用的公式是C=S/(2vU),那用那种面积呢?看了很多帖子,有的说用absolute  area,有的说用mathematical area,众说纷纭。还请高手指点
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muxinzi

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谢谢你呦!
2楼2013-09-02 11:23:03
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冷雨夜7618

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小木虫: 金币+0.5, 给个红包,谢谢回帖
你搞懂了吗?到底选哪个
3楼2014-03-27 10:19:03
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muxinzi

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数学积分
4楼2014-04-09 20:38:47
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反方向的时钟

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数学积分相对来说更合理,而绝对积分的话面积要比实际面积大
5楼2014-04-09 22:26:30
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wentaoyao

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The mathematical area in origin represents the area of the algebraic sum of trapezoids. Whereas the absolute area is the sum of absolute trapezoid values.
For area under the curve (in CV, which sweeps the positive and negative current, during forward and reverse scan) you have to consider the following facts...
If you use (Option 1) Mathematical area, which is nothing but the algebraic sum of the trapezoids, what ever the negative current you are getting will be subtracted from the positive current (or vice versa)... Hence you will be having the difference in the positive and negative values of area [If both sides of the axis is same you will have "ZERO" as a result... .
If you use (Option 2) Absolute area, which is the sum absolute trapezoid values, you will lose nothing. Hence you will get the absolute value of the area under the curve...
Hence abs area gives the original value of the area under curve
6楼2019-12-25 09:37:05
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