Fulvio Romano
Guest
The brushless are also controlled like this. the drag field is generated by the feedback error. for my curiosity, how do drives work? pwm, four quadrants... ward leonard:biggrin:. . .
Exatem
Guest
How do you mean propellers?
because in this case the answer is no.
Underwater propulsion propulsion propellers are fixed, with a generally higher standard number (standard 7) and with an optimized profile to delay cavitation.
Fulvio Romano
Guest
given the messages I had in private, I think I generated a wasp.. .It's a serious matter, we hope it's resolved!
99% error was mine and not the system. I did "quota", then I copied it is pasted into the private message and I will continue to write on the wrong page.
Excuse me. . .
Exatem
Guest
ho trovato questo:http://www.diegm.uniud.it/petrella/...ry stuff chapter 5 (d) - azionamenti msmp.pdf
e questo:http://mecsys.mecc.polimi.it/didattica/ils_acsm_materiale/dispense/il motore brushless.pdfI don't read it yet, I'll do it tomorrow. .
PaoloColombani
Guest
today they all work in pwm, from PC fans to naval ones, so much thinks mitsubishi electic (or even ir) to provide such powerful modules:
http://www.mitsubishichips.com/global/products/powermod/index.htmlthe pwm, that is the modulation by pulse amplitude allows to obtain from logic the sinusoidal signal of power that generates the rotary magnetic field, in other words you control position and speed of the rotor.
Drag
Guest
I stayed at a helical diameter of 3600 mm with preliminary data,
I am waiting to know the finals (power, turns).
with such diameter keeping me on the side of the safe I need from center axis to the famine no less than 2200 mm.
you can decrease the inclination, then stretch the line and increase the losses and the risk of vibration.
greetings
Exatem
Guest
We're going too hard, I give up.today they all work in pwm, from PC fans to naval ones, so much thinks mitsubishi electic (or even ir) to provide such powerful modules:
http://www.mitsubishichips.com/global/products/powermod/index.htmlthe pwm, that is the modulation by pulse amplitude allows to obtain from logic the sinusoidal signal of power that generates the rotary magnetic field, in other words you control position and speed of the rotor.
it was in perspective to use an electric motor without reducer, then I thought to place it as much as possible, shortening of much the axis line. in the center/try then I put batteries and generators.
but I am also waiting for directions on the solution.
PaoloColombani
Guest
I'm out of the sown.
Exatem
Guest
no, the purpose of this "project", besides boating to friend sampom for the next holidays, is clearly "didactic". so well explaining, deepening, of any kind and subject. What I wrote is because I read it on articles that treat the subject but from them to understand something... is that I am more of a "lamaire" than electrons, so if you go to the bottom of some arguments, I lose myself.
but there are others who read, who will certainly be interested in deepening the matter.
So continue, I read, but I will hardly understand anything.
Hi.
maxopus
Guest
boys are in big cases, I have to finish preparing the documentation for a tender (contractor's tender) and I think I will also work Saturday and Sunday ... I think the surfaces I'll make you at the beginning of next week, you don't want and have patience.
Fulvio Romano
Guest
Have you not finished the hull and already think of the tender??? :biggrin::biggrin:
(the tender is also the boat of support for the boats for the Laodice we could think of a mangusta 80'? )
Exatem
Guest
Er Presidente
Guest
That's the locomotive tender!
Max understood that we are making a pyrocorvetta!
:biggrin:
Max understood that we are making a pyrocorvetta!
:biggrin:
uluwatu_74
Guest
Well...the ship has been charled again!!!
I wanted to know your opinion about the part we like to take care of me and my "kompagna"...that is...the style (that big words!!!)! :biggrin:
because what we're doing is a "experimental" project. I thought I'd cut off the many stylistic elucubrations I'm doing!
so... once you define the functions of the various levels. ..I will (of course I do not take the exclusive...who has better ideas can quietly "put on") to define an acceptable stylistic line to be able to at least stand!
what do u think about,guys? :smile:
I wanted to know your opinion about the part we like to take care of me and my "kompagna"...that is...the style (that big words!!!)! :biggrin:
because what we're doing is a "experimental" project. I thought I'd cut off the many stylistic elucubrations I'm doing!
so... once you define the functions of the various levels. ..I will (of course I do not take the exclusive...who has better ideas can quietly "put on") to define an acceptable stylistic line to be able to at least stand!
what do u think about,guys? :smile:
maxopus
Guest
The ship didn't get angry... fortunately I have some things to do I struggle to find the time to finish.
Give me 5 or 6 days to crash it
Give me 5 or 6 days to crash it
incasinata
Guest
You'd like...
Exatem
Guest
I am preparing the iron plan for the various bridges but wait max for the correct hull. I'm really messed up right now. I know I can't do anything this week.
sampom
Guest
idem.
I'm always on the move, and I don't have a moment of breath in my office.
..but we'll come back to strength!:finger:
greetings
Marco:smile:
Exatem
Guest
Greetings to everyone.
After a quick round of consultations, the anomina yards trimarrano would have thought to continue in this area to post discussions, suggestions, ideas and, what else, while in the area "work in progress" you could open a parallel discussion in which to post exclusively the progress work. you have to study some details. For example, I almost finished the top of the irons with regard to the hold and cover (for the bottom irons and the neat appearance of the max surfaces).
in "work and progress" the 2 tables should be placed. but the determination of the irons that make them as we present it? I mentioned a post in which I gave indications on how to dimensional the paramezzals, longitudinal, etc. according to you how should you proceed? tables on one side and methods of calculation from another?
I hope I've been clear.
I look forward to your enlightening advice.
I got a gift from a friend. It is the 1965 reprint of a file dating back to 1911 (first edition, corrected in 1918), on the method of structural calculation of the ships. Almost...
After a quick round of consultations, the anomina yards trimarrano would have thought to continue in this area to post discussions, suggestions, ideas and, what else, while in the area "work in progress" you could open a parallel discussion in which to post exclusively the progress work. you have to study some details. For example, I almost finished the top of the irons with regard to the hold and cover (for the bottom irons and the neat appearance of the max surfaces).
in "work and progress" the 2 tables should be placed. but the determination of the irons that make them as we present it? I mentioned a post in which I gave indications on how to dimensional the paramezzals, longitudinal, etc. according to you how should you proceed? tables on one side and methods of calculation from another?
I hope I've been clear.
I look forward to your enlightening advice.
I got a gift from a friend. It is the 1965 reprint of a file dating back to 1911 (first edition, corrected in 1918), on the method of structural calculation of the ships. Almost...
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