Control technique for dc-dc converter

I simulated successfully this Switched Capacitor DC-DC converter which step up input voltage..Now main task is to maintain output at fixed 14V irrespective of input.I am trying to implement this through PWM which will provide variable duty cycle to switches.Ouput of converter be compared to fixed reference of 14V then comparator will estimate error signal..that error signal will be compare to sawtooth which generates switching signal for switches,I tried this but it is not working.plz guide where is error..2nd I am directly giving output of converter to comparator is this correct way..as shown in below fiqure output of converter which is Vo actual while Vo desired is fixed 14V for my case ..it will estimate Ve which will be compared to sawtooth to generate particular pulse width..This sawtooth magnitude and frequency would be how much for this case..any formula or lgic for this setting,,
Attachments:
PWM SCC.png ‏22 KB

Hi there,
You need to add an inductor between the 10V V1 and the Diode D3 shown as below.
When the converter is in on state, the energy transfers from the input source, which is V1, to the inductor L1. Now if the converter is then turned off, the magnitude of energy stored in the inductor is forced to your battery E (12V).
A typical buck converter is shown as follows.
Hope it helps.
Regards,
Chen_T
National Instruments

Similar Messages

New Enterprise Manager Book on Advanced EM Techniques for the Real World

Dear Friends,
I am pleased to say my first EM book can be ordered now.
Oracle Enterprise Manager Grid Control: Advanced Techniques for the Real World
[http://www.rampant-books.com/book_1001_advanced_techniques_oem_grid_control.htm]
Please let your colleagues and friends and clients know – it is the first book in the world to include EM 11g Grid Control. It is a great way for people to understand the capabilities of EM.
Oracle’s Enterprise Manager Grid Control is recognized as the IT Industry’s leading Oracle database administration and management tool. It is unrivalled in its ability to monitor, manage, maintain and report on entire enterprise grids that comprise hundreds (if not thousands) of Oracle databases and servers following an approach that is consistent and repeatable.
However, Enterprise Manager Grid Control may seem daunting even to the most advanced Oracle Administrator. The problem is you know about the power of Enterprise Manager but how do you unleash that power amongst what initially appears to be a maze of GUI-based screens that feature a myriad of links to reports and management tasks that in turn lead you to even more reports and management tasks?
This book shows you how to unleash that power.
Based on the Author’s considerable and practical Oracle database and Enterprise Manager Grid Control experience you will learn through illustrated examples how to create and schedule RMAN backups, generate Data Guard Standbys, clone databases and Oracle Homes and patch databases across hundreds and thousands of databases. You will learn how you can unlock the power of the Enterprise Manager Grid Control Packs, PlugIns and Connectors to simplify your database administration across your company’s database network, as also the management and monitoring of important Service Level Agreements (SLAs), and the nuances of all important real-time change control using Enterprise Manager.
There are other books on the market that describe how to install and configure Enterprise Manager but until now they haven’t explained using a simple and illustrated approach how to get the most out of your Enterprise Manager. This book does just that.
Covers the NEW Enterprise Manager Grid Control 11g.
Regards,
Porus.

Abuse reported.

Controlling Config for Project System

Hai,
I have Scenario where in project is triggered when sales order is created using a planning startagy 85(Assembly processing with network/project). for this scenario can anyone guide what are all configuration settings to be done in the controlling module for the project settlement.
govind.

hello,
u r talking about MRP run ie make to order when sales order is created then process starts with production order which is to be converted to plan order by using t.code md02 and md04.
At each stage u have to maintain actual data and plan data.
u need to configure controlling related to production run process.
hope this may helpful to u.

Controlling PDF Output Resolution when converting AutoCAD to PDF

I have a standalone java application that converts AutoCAD formats to PDF using the VectorConvertOptions AutoVue API settings. The transformations work fine but on some documents the PDF output quality is bad. Any tips or code snippets as to how to manipulate the transformation in order to create higher resolution PDF's? Im thinking I have do something with the pen settings?
Thanks in advance!

DPI is controlled by the AutoVue Document Converter driver
It can not be modified through the convert options
Your drawing is probably small enough so that it does not fit the default settings, but printing uses a 150 DPI by default and convert defaults to 300 or 600 depending on the version you have
So getting a better picture when you print than convert is something you would not expect, unless DPI for convert has already been modified.
Even through PDF is a vector format, it uses integer number for the coordinates (in points)
so you are bound to run into this issues the smaller the drawing you are trying to convert
That is even more problematic if you have fixed width line styles (like acad has)
Which version of AutoVue are you using?

Is There a Technique for Improving Rental Movie Experience?

I attempted to watch “The American” on my 2nd Gen Apple TV two nights ago. I was told it would take four hours to be ready, so I just left it alone and did something else. Last evening I found that it was ready to watch, so I did. It was fine for the first hour, but during the second half it stopped three times for several minutes to re-buffer -- a very annoying experience for movie watching, particularly when one is paying for it.
My Apple TV is connected wirelessly to my home wireless system. My home system always measures in the 15 to 20 Mb speed range, and my router is a brand new Airport Extreme (2.4 and 5 bands simultaneously). My Apple TV shows four (out of five) bars on the system info part of the menu. When I run the Apple TV’s own network speed test, there is no indication of a problem there either (although some feedback one way or the other would be better).
So, is there a technique for making this better, using the 8GB of memory in the new Apple TV? Movie watching was always flawless with my old 1st Gen Apple TV because you could download the rental to its memory. Is there some tip which will allow me to do the same with this new 2nd Gen Apple TV?

Thanks to vazandrew for prompt response. Yes, that's the way I understand the situation too. I was just wondering if anyone knew how to make better use of the cache to store more of the movie so we could prevent stoppages.
Frankly, the 2nd Gen Apple TV is a step backword from Apple's "it just works" philosophy. Yes, one can experiment with direct ethernet connection, look for wireless interference, etc., but the old First Gen. Apple TV simply wasn't that finicky to get a good movie watching experience (I've owned one for 2 1/2 years). And best of all it is a wonderful house music box where I keep all of my music, control it with my iPhone or iPad app, and don't have to have my computer on to do it. The only thing it lacked was Netflix streaming which is also spotty from time to time.
I plan to suggest to Apple that they develop an "Apple TV Pro" or Apple TV II" that contains memory like the 1st Gen did, but solid state this time, and also allow Netflix and other internet streaming. Yes, it would cost somewhat more, but it would perform much better. I wonder if they will pay attention to my voice in the wilderness?

First order control system for proportional valves

I am working on a proportional valve control program. We have four gas lines and it is desired to send four different gases through a combustion chamber sequentially. The close time for each valve is determined by the pressure measurement inside the combustion chamber. For instance, firstly, we let the nitrogen gas flows to the chamber, and the pressure inside the of it reaches 5 bars, we closed the nitrogen valve, and open the argon gas valve, and hold it opened until the pressure is reached at 15 bars inside the chamber and so on.
I was thinking on utilizing PID for control of these valves, however, one author from my institute said that you can not do this with a PID program, you can do that with a first order control system. Because in the system, it is not allowable to gases exceed their set points (set pressure values). PID controls the system with osilations around set point and after it provides the set value, but in this case, we are not allowed to exceed the set point (we may reach the set point slowly and asymptotically, but never exceed it).
I have not background on controlling hence I need your help. Could I do that with Labview? Is there a first order system control module in Control & Simulation Toolkit? And also where can I find examples, tutorials, etc. -if there are- about first order system controlling? Thanks in advance.
Egemen

what you are trying to do can be done with PID, but you would need to tune it to avoid overshot. But, most importantly, the use of the closed-loop PID will guarantee that your system will follow the setpoint, which can be a ramp going from the 0 to 100 % of the valve. The ramp on setpoint is a typical control technique to avoid overshoot of the system.
Now, if you look in the PID palette under Control and Simulation, you will see the function called "Lead-Lag". This function is a 'first order' system and you can define a pole and a zero for your system. If your objective is just make the change smooth, you can make the Lead-Lag to work as a "Lag" (make the lead zero) and apply to your system. here is an example:
C:\Program Files (x86)\National Instruments\LabVIEW 2014\examples\control\PID\Simulation - Lead-Lag.vi
If you need something more complicated than Lead-Lag, than I would you advice to use the LabVIEW Control Design and Simulation Module. There you can really develop more advanced controllers, like higher order filters or Model Predictive Control. But this also requires you to have a better knowledge of control theory...
Barp - Control and Simulation Group - LabVIEW R&D - National Instruments

Techniques for smooth continuous motion in a game

Hello all,
I'm working on a brick-breaker variant and all is going well except for the motion of the ball-- it isn't as smooth as I'd like. I've done some reading on the subject and have come away with two promising techniques for smooth continuous animation:
1. Use time based position update functions rather than frame-based. This basically allows you to cheat the SWF's FPS setting and make a certain object move more fluidly without jacking up the entire movie's FPS. This is handy and does have a dramatic effect, but it also costs much CPU and/or battery power to process so it (might) not be suitable for continuous motion. It is better left to tweens and other animations that are both short and critical. Also, I found that in order to get the ball moving at a reasonable speed for difficult gameplay I had to either lower the time delay or increase the velocity modifier to the point that the ball appeared to half-vanish much of the time (presumably) because it was getting too far ahead of the movie's frame renderer. As such, this method really isn't suitable for managing continuous core gameplay mechanics.
2. Convert velocity modifiers to floating point values rather than integers. This worked very well to smooth out the motion a bit, and has had no adverse side effects so far as I can see. It doesn't quite get the ball to the level of smooth animation I'd like, however.
Currently my movie's FPS is set to 45 and I'd prefer not to go any higher than that if possible. With floating point modifiers and 60 FPS everything is very smooth, but I am wary of using an FPS setting so high, particularly as this is eventually going to be a mobile app and therefore battery life is a consideration. Does anyone know any more tricks to smooth continuous, game-mechanics-centric motion?
Is there perhaps any magic that can be worked with the new Stage Video API and/or any other hardware acceleration offered by flash player/AIR? Is Stage Video even usable in iOS and/or Android apps created in Flash CS5?
Thanks,
CCJ

What was the Bit-Rate of your Exported MOV file?
Good luck,
Hunt

"Advance Synchronization Techniques for Data Acqusition is not simple.

I want to use a 6534 DIO to drive my instrument and a synchronized 6502E to do AI from the instrument. The developer zone tutorial "Advanced Synchronization Techniques for Data Acquisition" suggests some of what is necessary to change from using AO as the master to using some other operation. After installing an RTSI cable, "Synchronized AI,AO,DI,DO,CTR.vi" runs as-is. Has anyone successfully converted the "Synchronized AI,AO,DI,DO,CTR.vi" or something similar to having some other master than AO? I want to use DO as master, and have moved the start vi's to the initialization cases except that for DO, have removed DI completely,and have tried to get DO to transmit REC1 on RTSI1 and AI and AO to clock o
n the RTSI1 signal. The modified VI runs to completion, but I get no input at AI.

Hi Bhanu,
I ran the program SAP_FACTVIEWS_RECREATE.It is also not fetching any data.In the monitor, the extraction shows yellow status and the Processing says NO DATA.I have not given any selections at infopackage level.
Please let me know what do i do.
Thanks in advance.
Regards,
Venkat

Printer control app for iphone

is it possible to roll back to a previous version of the Printer Control app for iphone? I recently and stupidly updated the HP Printer Control app when offered through itunes on October 30 and have lost all the functionality I previously had to print directly from my iphone to my photosmart 7520. Previously I could print whatever pages I chose from Safari and could change the print settings for either draft or normal, colour / black & white before printing. Now when I try to print a page, you don't get the option to just print page 1 and it wastes ink. If I open a pdf (all I've tried so far) document within this new AiO Remote app - even though my printer is listed and supposedly set up - I can't print at all! I desperately want to ditch this abysmal update and go back to the version that worked perfectly. I have conctacted Apple and they were unable to help as it's a third party app and referred me back to HP. Does anyone know how to do this?

Hi brattynat. I have found a few older documents which might help you revert back.
Just to clarify, when you print from Safari, what are you clicking exactly to start your printing process?
How do I downgrade an iPhone app to a previous version?:
http://www.iphonefaq.org/archives/971543
Recover Older Versions of iPhone Apps After Updating:
http://gigaom.com/2010/08/25/recover-older-versions-of-iphone-apps-after-updating/
TwoPointOh
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom to say “Thanks” for helping!

Is there port of "HP Printer Control " app for Windows Phone?

Are there port of "HP Printer Control " app for Windows Phone? This is at the same time request if there is not.
Regards.

Hello Zubru,
I saw your post, good question! There are no apps at this time available for the windows phone however here is the link to the HP ePrint site to keep an eye out for any possible changes to that.
Click the KUDOS star on the left to say “thanks” for helping!
Please mark a reply “Accept as Solution” if it solved your issue so others can find it.
I work on behalf of HP.
I worked on behalf of HP.

Follow up control action for Training and Event Management

Dear Expert,
I am new to TEM module. After the training course, I would like to set the course result to each participant (pass or fail)
I tried to set the "Follow-up control options" for the selected course type and then execute tcode pv15, but still cannot trigger the follow up action.
Can anyone help me on this?
Million thanks,
WF

Hi Wiliam,
For this purpose, implement BADI HRBAS00INFTY - IN_UPDATE method.
IF sy-tcode = 'PV15' OR ( sy-tcode = 'PSV2' AND sy-xcode = 'EVFO' ).
LOOP AT PLOG_TAB ...
POP-UP ....
ENDLOOP.
ENDIF.
Regards,
Dilek

HT4759 i downloaded the icloud to my pc it says to login with apple id and it says it is a valid apple id but not cloud but i cannot get the control panel for icloud to come up to set it up on my pc which runs windows 8

i downloaded the icloud to my pc it says to login with apple id and it says it is a valid apple id but not cloud but i cannot get the control panel for icloud to come up to set it up on my pc which runs windows 8

An update.
From iCloud Control Panel 2.1.1 for Windows
"iCloud Control Panel 2.1 and later includes support for Windows 8"
but you still need to set it up on a Mac or iOS device, "Note: To create an iCloud account you need an iPhone, iPad, or iPod touch with iOS 5 or later, or a Mac with OS X Lion v10.7.5 or later."

Is it possible for automator to convert all word documents in my dropbox folder to apple's "pages" on iCloud and keep the same folder organization?

Is it possible for automator to convert all word documents in my dropbox folder to apple's "pages" on iCloud and keep the same folder organization? I am a teacher and want to switch from using microsoft office on my macbook pro to using pages/number/keynote. I am hoping to get an iPad next year and go "paperless" with lesson plans and gradebooks and I heard that pages/numbers/keynote are great on the ipad. I'd like to write an automator script (workflow?) to convert all my documents in dropbox to pages and have them stored on iCloud, then be able to access the files on my macbook pro and ipad. Thanks!

Create an AppleID under different email addresses for each family member at http://appleid.apple.com
If they don't already have their own email address just setup a free one with Gmail, Yahoo, Hotmail or whoever you prefer.
Then on each device sign into iMessage with the users own AppleID in:
Settings > Messages > Send & Receive > Tap AppleID at top > Sign Out, then sign back in again with the correct AppleID.

No control line for line item - error while posting bd to accounting

Hi all,
Billing document showing err "no control line for line item" while posting to accounting doc.Sales document is complete no in completion logs.
Previous errr: g/l missing for line item" in order incompletion after maintaining company code for customer, then refresh the g/l missing for line item is no more logs and showing the error "no control line for line item" while posting bd to accts.
Please help
Regards
anush

Hello Anush,
if the company data of the payer was not created when the sales order has been created, then the system could not create the correct records in table VBREVK. Once the company data has been maintained the VBREVK records could be corrected by re-saving the sales, but only if no billing document exists.
In your case you already created the billing document.
Please try these step:
1. reverse billing document
2. run VA02 add a blank char to PO number, save
3. create new billing document
Best regards,
Ivano.

Problem with Office 2007 whenever I install the iCloud Control Panel for Windows

Sadly I have a Win7 laptop as my work hack and am using Office 2007. Outside of work I use iCloud to sync calenders between various iOS/OS X devices however whenever I install the iCloud Control Panel for Windows Plugin my email no longer loads. Outlook starts fine and just sits there with an empty inbox waiting for mail to load. I can't even open the iCloud Panel from within Control Panel either to set preferences!
Unistalling the iCloud plug-in resolves this but I really want to sync my iCloud calender with Outlook and can't see any other way to do it, plus it worked before and then just stopped.
Any assistance would be appreciated.

I tired everything that was suggested in the forum. Tried IE and firefox to no avail. When I tried computers in stores both worked. A friend of mine who has the 32 bit setup got it to work. Several folks have stated it is the compatability issue with 64 bit. As a last resort, I loaded safari on my home computer, and yep, it works. Go figure, apple product.

Control technique for dc-dc converter

Similar Messages

Maybe you are looking for