Re: transient analysis of linear system
- From: jasen <jasen@xxxxxxxxxxx>
- Date: 19 Aug 2006 22:15:17 GMT
On 2006-08-18, wombat <wombat@xxxxxxxxxxxxxxxxxxxxxxxx> wrote:
My original post was probably a little premature and therefore
misleading with regard to the problem statement so I'll clarify.
"I need to know if the resistors change by more than 10% while having to
contend with the sources of x and y moving up and down."
Regarding the time constant, I have modelled the circuit. As an example:
When R2 decreases it's resistance by 10% (to 1800G) point B changes to
it's maximum voltage (however only 0.4% change) in under 8 secs.
Unfortunately the current through the resistors can't be measured so I
have to rely on voltage measurement. It sounds pretty extreme, 0.4%
accuracy is hard to come by but if I measure differentially across the
resistor it equates to ~5% change - definitely achievable.
The previous problem is related but my methodology changed when I
realised I couldn't do it that way. It wasn't solvable.
you can't do it this way either.
measuring the rate of change of voltage on each capacitor will give you the
current flowing through that capacitor
but without also knowing the current flowing through one of the
resistors there can be no solution of the system.
wombat
--
Bye.
Jasen
.
- References:
- transient analysis of linear system
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- Re: transient analysis of linear system
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- Re: transient analysis of linear system
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