Control package: Difference between revisions
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| getLFTModel || style="background: red;" | no || || | | getLFTModel || style="background: red;" | no || || | ||
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| rowspan="9" | Model with Time Delays || pade || style="background: red;" | no || || | |||
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| absorbDelay || style="background: red;" | no || || | |||
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| thiran || style="background: green;" | yes || thiran.m || | |||
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| hasdelay || style="background: red;" | no || || | |||
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| hasInternalDelay || style="background: red;" | no || || | |||
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| totaldelay || style="background: red;" | no || || | |||
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| delayss || style="background: red;" | no || || | |||
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| setDelayModel || style="background: red;" | no || || | |||
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| getDelayModel || style="background: red;" | no || || | |||
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Revision as of 12:49, 23 September 2015
The control package is part of the Octave Forge project.
Function list
Linear System Representation
| Chapter | Function | Implemented | File | Status |
|---|---|---|---|---|
| Basic Models | tf | yes | @tf/tf.m | |
| zpk | yes | zpk.m | ||
| ss | yes | @ss/ss.m | ||
| frd | yes | @frd/frd.m | ||
| pid | no | |||
| pidstd | no | |||
| pid2 | no | |||
| dss | yes | @lti/dss.m | ||
| drss | no | |||
| filt | yes | filt.m | ||
| rss | no | |||
| Tunable Models | ltiblock.gain | no | ||
| ltiblock.pid | no | |||
| ltiblock.pid2 | no | |||
| ltiblock.ss | no | |||
| ltiblock.tf | no | |||
| realp | no | |||
| AnalysisPoint | no | |||
| genss | no | |||
| genfrd | no | |||
| genmat | no | |||
| getLoopTransfer | no | |||
| getIOTransfer | no | |||
| getSensitivity | no | |||
| getCompSensitivity | no | |||
| getPoints | no | |||
| replaceBlock | no | |||
| getValue | no | |||
| setValue | no | |||
| getBlockValue | no | |||
| setBlockValue | no | |||
| showBlockValue | no | |||
| showTunable | no | |||
| nblocks | no | |||
| getLFTModel | no | |||
| Model with Time Delays | pade | no | ||
| absorbDelay | no | |||
| thiran | yes | thiran.m | ||
| hasdelay | no | |||
| hasInternalDelay | no | |||
| totaldelay | no | |||
| delayss | no | |||
| setDelayModel | no | |||
| getDelayModel | no |
Model Interconnection
Model Transformation
Linear Analysis
Control Design
Matrix Computations
Some very basic examples
PT1/low-pass filter step response
| Code: Creating a transfer function and plotting its response |
T1=0.4; # time constant
P=tf([1], [T1 1]) # create transfer function model
step(P,2) # plot step response
#add some common markers like the tangent line at the origin, which crosses lim(n->inf) f(t) at t=T1
hold on
plot ([0 T1], [0 1],"g")
plot ([T1 T1], [0 1],"k")
plot ([0 T1], [1-1/e 1-1/e],"m")
hold off
|
Try also bode(P)! (a first order low-pass filter has -3db magnitude at f=1/T1)