Bode/Nyquist plot.....

05132015, 11:03 AM
Post: #1




Bode/Nyquist plot.....
program is based on (Statistics 1Var)...the numerical values from this this code is valid but plots are temperamental. need help pls.
BODE(ƒ1,ƒ2,[num],[den])>>enter. example BODE(1,1,[1],[1 0.2 1])>>enter. use VIEW key to select graphs. Code:


05132015, 11:13 AM
(This post was last modified: 05132015 11:24 AM by salvomic.)
Post: #2




RE: Bode/Nyquist plot.....
(05132015 11:03 AM)toshk Wrote: program is based on (Statistics 1Var)... hi, thank you, but, please, check the code included... I get this error (copy and pasting): error in line 7 > SetSample(H1,D1); I don't think that the error is really there, perhaps elsewhere... Thank you, Salvo EDIT: no error in your program! here there was previous data on Statistic 1var, so there there was an error with H1 and so on... Also with some programs of mine this happens... please, advice what data put in Statistic 1var for your example above, so I'll be able to test... ∫aL√0mic (IT9CLU), HP Prime 50g 41CX 71b 42s 12C 15C  DM42 WP34s :: Prime Soft. Lib 

05132015, 04:04 PM
(This post was last modified: 05132015 04:17 PM by toshk.)
Post: #3




RE: Bode/Nyquist plot.....
(05132015 11:13 AM)salvomic Wrote:G(s) =(05132015 11:03 AM)toshk Wrote: program is based on (Statistics 1Var)... 1  s^2 + 0.2 s + 1 Continuoustime transfer function. for frequencies(rad/s) between .01 and 10 shd be entered: BODE(1,1,[1],[1 0.2 1])>>enter. use VIEW >>Start (if you think to empty D1 and D2) use VIEW >>Magnitude. (to load freq. vs dB magnitude) soft Menu>>Zoom>>Auotscale (to see how off the plot is) 

05132015, 04:37 PM
Post: #4




RE: Bode/Nyquist plot.....
(05132015 04:04 PM)toshk Wrote: Continuoustime transfer function. for frequencies(rad/s) between .01 and 10 shd be entered: ok, I mean: I have already D1 and D2 empty... In View I can see only 1. "Split screen Plot Detail" 2. Autoscale... Am I wrong? Salvo ∫aL√0mic (IT9CLU), HP Prime 50g 41CX 71b 42s 12C 15C  DM42 WP34s :: Prime Soft. Lib 

05132015, 05:01 PM
Post: #5




RE: Bode/Nyquist plot.....
recompile under the copy of (Statistics 1Var)..then you shd see mine VIEW


05132015, 05:13 PM
Post: #6




RE: Bode/Nyquist plot.....
(05132015 05:01 PM)toshk Wrote: recompile under the copy of (Statistics 1Var)..then you shd see mine VIEW ok, but... I don't remember how, please, help ∫aL√0mic (IT9CLU), HP Prime 50g 41CX 71b 42s 12C 15C  DM42 WP34s :: Prime Soft. Lib 

05132015, 05:14 PM
Post: #7




RE: Bode/Nyquist plot.....
(05132015 05:13 PM)salvomic Wrote: ok, but... I don't remember how, please, help Open the app program in your program catalog (very top item), then exit and go the the app screen. TW Although I work for the HP calculator group, the views and opinions I post here are my own. 

05132015, 05:20 PM
Post: #8




RE: Bode/Nyquist plot.....
select the copy of (Statistics 1Var) with the code.
Apps>>Statistics 1Var copy>>Enter Shift>>Program>>Statistics 1Var copy>>Enter>>Check (for bugs). 

05132015, 05:29 PM
(This post was last modified: 05132015 05:47 PM by salvomic.)
Post: #9




RE: Bode/Nyquist plot.....
(05132015 05:14 PM)Tim Wessman Wrote:(05132015 05:13 PM)salvomic Wrote: ok, but... I don't remember how, please, help (05132015 05:20 PM)toshk Wrote: select the copy of (Statistics 1Var) with the code. thanks to both of you I created a Statistic 1var copy, followed both tips, but in View I can see always the standard items. I'm trying again EDIT: I put your code in a program (here called bodenyquist). Must I put it in Statistic 1var copy also? Sorry, but for now I'm a bit confused... ∫aL√0mic (IT9CLU), HP Prime 50g 41CX 71b 42s 12C 15C  DM42 WP34s :: Prime Soft. Lib 

05132015, 06:00 PM
(This post was last modified: 05132015 06:09 PM by toshk.)
Post: #10




RE: Bode/Nyquist plot.....
the code must be in Statistics 1Var copy.
yes... the code is based on Statistics 1Var, putting the code in mere program would not help. 

05132015, 07:30 PM
Post: #11




RE: Bode/Nyquist plot.....
Can you please define what you mean by "tempermental"? I got it running here and it seems to be working fine  however I am not certain what I should be looking for.
TW Although I work for the HP calculator group, the views and opinions I post here are my own. 

05132015, 08:43 PM
Post: #12




RE: Bode/Nyquist plot.....
BODE(1,1,[1],[1 0.2 1])
shd look like attached pix. are you getting the same? without having to hit VIEW or Plot and Zoom multiplies of times? the numerical values in D1 and D2 changes with each VIEW pressed but not the graph (Plot). thanks 

05132015, 09:35 PM
Post: #13




RE: Bode/Nyquist plot.....
I'm trying with the new firmware, and I get this (apparent) error in the line
H1Type=4; ... Salvo ∫aL√0mic (IT9CLU), HP Prime 50g 41CX 71b 42s 12C 15C  DM42 WP34s :: Prime Soft. Lib 

05132015, 10:25 PM
Post: #14




RE: Bode/Nyquist plot.....
with the new firmware, edit them out.
H1Type=4; H1Type=4; and compile without error. use Symb to set it up. choose Dot under Plot1: 

05132015, 10:34 PM
Post: #15




RE: Bode/Nyquist plot.....
(05132015 10:25 PM)toshk Wrote: with the new firmware, edit them out. ok, I set Dot, but I don't understand: H1Type=4; H1Type=4; ? The error cursor is set first than the "H" of "H1Type", still... ok, I'll try tomorrow ∫aL√0mic (IT9CLU), HP Prime 50g 41CX 71b 42s 12C 15C  DM42 WP34s :: Prime Soft. Lib 

05132015, 10:37 PM
(This post was last modified: 05132015 11:55 PM by Tim Wessman.)
Post: #16




RE: Bode/Nyquist plot.....
You can now directly access the symb parameters in a consistent way. H1 will recall a list of parameters. H1(num):= will let you set any parameter.
So for example, you can just use this H1:={'D1','D2', 4}; to replace 3 commands. TW Although I work for the HP calculator group, the views and opinions I post here are my own. 

05132015, 11:51 PM
(This post was last modified: 05132015 11:52 PM by alexzkter.)
Post: #17




RE: Bode/Nyquist plot.....
I created the Bode program with the long code, see capture:
Also created copy of Statistics 1Var named Bode: Went into the app, shiftProgramenter on Bode program, debug (no errors) went back into the Statistics 1Var copy app then entered the code BODE(1,1,[1],[1 0.2 1]) on the first cell but error message shows up: What am I doing wrong? 

05142015, 12:16 AM
Post: #18




RE: Bode/Nyquist plot.....
I believe the intent is for that command BODE(1,1,[1],[1 0.2 1]) to be executed from the home screen or similar.
This is what I've done:
TW Although I work for the HP calculator group, the views and opinions I post here are my own. 

05142015, 12:21 AM
(This post was last modified: 05142015 12:48 AM by toshk.)
Post: #19




RE: Bode/Nyquist plot.....
the code is based on Statistics_1Var_Copy (newer firmware)
it works but buggy using Symb>>Dot....this is my code. execute START from VIEW. Q: I assume this will be to show the Info screen on completion? Yes and also reset App. BODE(1,1,[1],[1 0.2 1]) on the home screen. Yes Home screen >>VIEW>>Magnitude>>Plot (to see bode) use Zoom from soft menu Code:


05142015, 08:58 AM
Post: #20




RE: Bode/Nyquist plot.....
(05132015 10:37 PM)Tim Wessman Wrote: You can now directly access the symb parameters in a consistent way. H1 will recall a list of parameters. H1(num):= will let you set any parameter. thanks Tim, very interesting now! Salvo ∫aL√0mic (IT9CLU), HP Prime 50g 41CX 71b 42s 12C 15C  DM42 WP34s :: Prime Soft. Lib 

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