closed loop control with an on line microcomputer?
437118
The loop response time is the key requirement. How fast must the feedback loop correct for a loop input error? Make a model of the complete feedback loop characterizing the time delay of each of it's functional blocks. If the microcomputer is actually within the loop rather than external to it, you'll need to have a repeatable input to output response time. Of course the theory of feedback or servo loops is addressed in electrical engineering courses on "feedback control loops". A "real time operating system" may be required for the microcomputer hardware and software if the response time is critical.
73266
try http://www.switchboard.com
1046467
I've seen this done for a senior project and it worked out well. You could build a remote controlled device (car, airplane, robot, etc) connect to it through a WIFI signal. You’ll need a control board as well as a WIFI receiver (I suggest WIFI because it’s an easy signal to ramp up over a large area). Then control the device using say a web interface then it would be easy to control from say a PDA. If you’re really ambitious you could also write a mini phone application and use it call into your server station (you'll need a receiver app or module for that) to control the device by phone. \nAlso consider \nStreaming video with this\nAlso if you use phone, make sure you have enough throughput on the line.\nAlso ensure that whatever connection you decide to use has very little lag, you may have to make up for such short comings in your code \nGood Luck and have fun
735882
If you use VB.NET you can easily accomplish this with Managed Direct X.\n\nTry downloading the Direct X SDK:\n\nhttp://msdn.microsoft.com/directx/
773937
You can program on ANY machine.\n\nPlease don't ask for personal replies, it's not in the spirit of Y!Answers. I'd even go as far as to say it's selfish.\n\nRawlyn.
272923
mechanical timer\nNO delay until closed\npencil lead and 120AC\nDon't hurt anybody
1116506
I know of two products:\nElectronic Service Control (has a free 30 day trial + an online trial) - trialhttp://www.coastalcomputercorporation.com/index.html?engine=Google&term=hvac_software&GTSE=GOOG&GTKW=hvac+software \nShafer's - http://www.shafers.com/hvac_software/?wt.srch=1\n\nFree Software is hard to come by, maybe you could try a P2P Network - http://www.shareaza.com/
96818
u hav trouble spelling I think\nif you meant 'two phase closed loop thermosyphon' then try the link below
1161830
I like the system mechanic. unfortunately it isn't free.\n\nYou can download a demo here:\nhttp://www.systemmechanic.com/\n\nCynthia
310681
Basic Input Output System.
510200
More info is needed. What type of control system does the chair use, a modern or older chair for example. The electronic circuitry is fairly straight forward, but without more information little can be done. If you can locate my email on this site, write me and I'll try to help. I have 36 years experience in electronic control systems.\n\nOuzinki
475513
If you are using windows xp with service pack 2, using Remote desktop you can control.\n\nOtherwise use symantech's PCAnyware
574852
try zonelabs\n\nclick on this link for more details\n\ntry downloading zonelabs
67926
Here's all you need to know about "phase-locked loops"\nhttp://www.uoguelph.ca/~antoon/gadgets/pll/pll.html
624271
Zonelabs Zonealarm\nhttp://www.zonelabs.com
360147
Allen Bradley has PLC simulator software.  I believe it will simulate the usual SLC500 and micrologix line of PLCs.  As for a book, start at www.AB.com and check out their knowledge base.
854800
this one here --->  http://www.pcmech.com/byopc/