Control package: Difference between revisions
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| size || style="background: green;" | yes || built-in function || | | size || style="background: green;" | yes || built-in function || | ||
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| rowspan="5" | Model Arrays || stack || style="background: red;" | no || || | |||
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| nmodels || style="background: red;" | no || || | |||
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| permute || style="background: green;" | yes || built-in function || | |||
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| reshape || style="background: green;" | yes || built-in function || | |||
|- | |||
| repsys || style="background: green;" | yes || repsys.m || | |||
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|} | |} | ||
Revision as of 13:01, 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 Attributes | get | yes | @iddata/get.m | |
| set | yes | @iddata/set.m | ||
| tfdata | yes | @lti/tfdata.m | ||
| zpkdata | yes | @lti/zpkdata.m | ||
| ssdata | yes | @lti/ssdata.m | ||
| frdata | yes | @lti/frdata.m | ||
| piddata | no | |||
| pidstddata | no | |||
| piddata2 | no | |||
| pidstddata2 | no | |||
| dssdata | yes | @lti/dssdata.m | ||
| chgFreqUnit | no | |||
| chgTimeUnit | no | |||
| isct | yes | @lti/isct.m | ||
| isdt | yes | @lti/isdt.m | ||
| isempty | yes | built-in function | ||
| isfinite | yes | built-in function | ||
| isParametric | no | |||
| isproper | no | |||
| isreal | yes | built-in function | ||
| isiso | no | |||
| isstable | yes | @lti/isstable.m | ||
| isstatic | no | |||
| order | no | |||
| ndims | yes | built-in function | ||
| size | yes | built-in function | ||
| Model Arrays | stack | no | ||
| nmodels | no | |||
| permute | yes | built-in function | ||
| reshape | yes | built-in function | ||
| repsys | yes | repsys.m |
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)