g******u 发帖数: 3060 | 1 辅助推一下传递函数,建立一个复杂电路模型然后给伯德图这种,有什么推荐的?
免费最好,不免费多半也能找到破解.但不用太复杂,差不多就行. |
t*****l 发帖数: 2658 | 2 LTspice? Matlab?
【在 g******u 的大作中提到】![](/moin_static193/solenoid/img/up.png) : 辅助推一下传递函数,建立一个复杂电路模型然后给伯德图这种,有什么推荐的? : 免费最好,不免费多半也能找到破解.但不用太复杂,差不多就行.
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g******u 发帖数: 3060 | 3 LTspice肯定不行,matlab有公式来画图可以,但仿真不行.
【在 t*****l 的大作中提到】![](/moin_static193/solenoid/img/up.png) : LTspice? Matlab?
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i*****t 发帖数: 24265 | 4 maple+matlab?
【在 g******u 的大作中提到】![](/moin_static193/solenoid/img/up.png) : LTspice肯定不行,matlab有公式来画图可以,但仿真不行.
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E*****a 发帖数: 757 | 5 simplis
【在 g******u 的大作中提到】![](/moin_static193/solenoid/img/up.png) : LTspice肯定不行,matlab有公式来画图可以,但仿真不行.
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T******T 发帖数: 3066 | 6 For simple transmission line modeling and general SI sims:
Mentor Hyperlynx linesim/boardsim.
Power Integrity Simulations:
1) Sigrity PowerSI for DC and AC sims and it does extract S,Y,Z
parameters.
2) Ansoft PI and SIWave simulation suite, used to use it for extracting
S-parameter model, as well as transmission line model extraction and
simulation.
The toolsets are quite expensive, not sure if they have eval versions.
【在 g******u 的大作中提到】![](/moin_static193/solenoid/img/up.png) : LTspice肯定不行,matlab有公式来画图可以,但仿真不行.
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g******u 发帖数: 3060 | 7 Seems a bit overkill to me.
Is there any simple tool which you can input a lot opamps and passive
compoennts, then it'll generate some Bode Plots?
【在 T******T 的大作中提到】![](/moin_static193/solenoid/img/up.png) : For simple transmission line modeling and general SI sims: : Mentor Hyperlynx linesim/boardsim. : Power Integrity Simulations: : 1) Sigrity PowerSI for DC and AC sims and it does extract S,Y,Z : parameters. : 2) Ansoft PI and SIWave simulation suite, used to use it for extracting : S-parameter model, as well as transmission line model extraction and : simulation. : The toolsets are quite expensive, not sure if they have eval versions.
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T******T 发帖数: 3066 | 8 Never mind, seems you'll need the Ansoft tool which could take in Spice models for your opamps and drivers, then extracts the model for your transmission/power network plus passive elements, then simulate and give you the frequency response plot. Did you want the Impedance plot for PI ?
【在 g******u 的大作中提到】![](/moin_static193/solenoid/img/up.png) : Seems a bit overkill to me. : Is there any simple tool which you can input a lot opamps and passive : compoennts, then it'll generate some Bode Plots?
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l***g 发帖数: 1035 | 9 not quite possible unless you have the transfer function of each opamp. if y
ou need something close, simulink control tool can plot the bode. you may ne
ed some simscape toolboxes for the opamp. If u need something acurate, build
the circuit and run spectrum analyzer bah.. much cheaper than the sw.
【在 g******u 的大作中提到】![](/moin_static193/solenoid/img/up.png) : Seems a bit overkill to me. : Is there any simple tool which you can input a lot opamps and passive : compoennts, then it'll generate some Bode Plots?
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N*o 发帖数: 5 | 10 I use Simetrix/Simplis. Never have any problems on convergence. Let me
know if you want it~
【在 g******u 的大作中提到】![](/moin_static193/solenoid/img/up.png) : Seems a bit overkill to me. : Is there any simple tool which you can input a lot opamps and passive : compoennts, then it'll generate some Bode Plots?
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l****s 发帖数: 41 | 11 Matlab-simulink is the one you are looking for.
It is good for system level (algorithm development) simulation. For what you
need, it is really a piece of cake for it.
【在 g******u 的大作中提到】![](/moin_static193/solenoid/img/up.png) : LTspice肯定不行,matlab有公式来画图可以,但仿真不行.
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f******d 发帖数: 6361 | 12 做power electronics 的业界标准软件不是saber(不知道有没有拼错)吗?那东西能
handle你的问题吗?
【在 g******u 的大作中提到】![](/moin_static193/solenoid/img/up.png) : Seems a bit overkill to me. : Is there any simple tool which you can input a lot opamps and passive : compoennts, then it'll generate some Bode Plots?
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s**g 发帖数: 66 | 13 “辅助推一下传递函数,建立一个复杂电路模型然后给伯德图这种"
假设你是给开关电源建模。
这里就涉及到你是直接要数值解,还是从解析解出发来搞分析。
如果只是要数值解,一种办法是通过周期系统的AC仿真得到主电路的传递函数(比如
Cadence spectre 里有一种qpssac的仿真分析)。有了该传递函数,再设计控制器,可
以用spice based的电路仿真或者matlab来做。用spice 的好处是,你能够把一些厂家
提供的运放电路macro model包括进去。
另外一种办法是利用系统辨识的策略,把主电路当成一个黑匣子,开路状态下,占空比
突然小幅增大,看输出的阶跃响应,取导数得impulse response, 换到频域就是传递函
数了。接下来的过程就一样。这里你只是需要一个主电路时域暂态方真。
解析解的推导:功率级的传递函数可以利用一些symbolic analysis tool like Matlab
symbolic tool box, mathematica 以及maple, 也可以用sapwin.具体过程可以利用信
号流图,也可以通过状态空间。其实大部分常用的主电路的传递函数在书上都可查到。
由此再加上控制器设计参数,就可以搞零极点配置,优化等等。用matlab会方便很多。
最后再罗嗦一下开环响应的测量,其实就是做一个二端口网络分析仪,但激励信号要串
联入控制回路(变压器耦合)。RIDLEY还专门开发这种仪器来卖,据说精度还不错。 |
gr 发帖数: 2958 | 14 嗯,我用过AP200还挺好用的。
现在大概出AP300了,涨了不少。
【在 s**g 的大作中提到】![](/moin_static193/solenoid/img/up.png) : “辅助推一下传递函数,建立一个复杂电路模型然后给伯德图这种" : 假设你是给开关电源建模。 : 这里就涉及到你是直接要数值解,还是从解析解出发来搞分析。 : 如果只是要数值解,一种办法是通过周期系统的AC仿真得到主电路的传递函数(比如 : Cadence spectre 里有一种qpssac的仿真分析)。有了该传递函数,再设计控制器,可 : 以用spice based的电路仿真或者matlab来做。用spice 的好处是,你能够把一些厂家 : 提供的运放电路macro model包括进去。 : 另外一种办法是利用系统辨识的策略,把主电路当成一个黑匣子,开路状态下,占空比 : 突然小幅增大,看输出的阶跃响应,取导数得impulse response, 换到频域就是传递函 : 数了。接下来的过程就一样。这里你只是需要一个主电路时域暂态方真。
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g*****g 发帖数: 3623 | 15 it is good one..
【在 E*****a 的大作中提到】![](/moin_static193/solenoid/img/up.png) : simplis
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