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Hi Tim,
My electronics skills are fairly good, I have built many projects over the time. What I was wanting to do, is have a control box in the shack with a readout and left/right controls. And have the provision to also be able to have a PC control it. I like the Pitch-prop motor, as it is strong, and can be controlled easy. The way I control it at the moment, is via a 2 voltage system. The pitch-prop runs at 36volts for full speed, and when I wish to slow it down for small movements, I use a second set of controls at 15volts. Not the best way of doing it, but it works. I then look out the window and see where it is pointing. I know where N, E, S, W are on my section. As to price on the parts, I would like to keep it down to around a couple of hundred dollars. ![]() Regards and thanks for your input. Kevin, ZL1KFM www.qsl.net/zl1hk "Tim Wescott" wrote in message ... Excepting the readout, this should be a fairly routine motor control problem. Depending on what you want to do your control box could be as simple as a current-limited power supply and a couple of switches or as complex as a fully fed-back motion control system. How's your electronics skills, and how fancy do you want it to be? -- Tim Wescott Wescott Design Services http://www.wescottdesign.com Posting from Google? See http://cfaj.freeshell.org/google/ "Applied Control Theory for Embedded Systems" came out in April. See details at http://www.wescottdesign.com/actfes/actfes.html |
#13
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Hey Kevin:
http://www.wescottdesign.com/articles/pidwophd.html http://www.wescottdesign.com/article.../friction.html If you want to control it from a PC I'd suggest that you drive an H bridge from a microprocessor, with a PID controller in there to make it go. The biggest key to making a PID loop without doing a bunch of math is to keep your ambition under control -- if you have to go fast, then you need to delve into theory. As pointed out, PID control can be tricky -- even though I'm a control systems professional there's a good chance that if I did it rev 1.0 would just use the micro to implement virtual buttons, with feedback control for rev 1.1. You definitely want to make sure all the pieces are working before you close the loop. Kevin & Natalia wrote: Hi Tim, My electronics skills are fairly good, I have built many projects over the time. What I was wanting to do, is have a control box in the shack with a readout and left/right controls. And have the provision to also be able to have a PC control it. I like the Pitch-prop motor, as it is strong, and can be controlled easy. The way I control it at the moment, is via a 2 voltage system. The pitch-prop runs at 36volts for full speed, and when I wish to slow it down for small movements, I use a second set of controls at 15volts. Not the best way of doing it, but it works. I then look out the window and see where it is pointing. I know where N, E, S, W are on my section. As to price on the parts, I would like to keep it down to around a couple of hundred dollars. ![]() Regards and thanks for your input. Kevin, ZL1KFM www.qsl.net/zl1hk "Tim Wescott" wrote in message ... Excepting the readout, this should be a fairly routine motor control problem. Depending on what you want to do your control box could be as simple as a current-limited power supply and a couple of switches or as complex as a fully fed-back motion control system. How's your electronics skills, and how fancy do you want it to be? -- Tim Wescott Wescott Design Services http://www.wescottdesign.com Posting from Google? See http://cfaj.freeshell.org/google/ "Applied Control Theory for Embedded Systems" came out in April. See details at http://www.wescottdesign.com/actfes/actfes.html -- Tim Wescott Wescott Design Services http://www.wescottdesign.com Posting from Google? See http://cfaj.freeshell.org/google/ "Applied Control Theory for Embedded Systems" came out in April. See details at http://www.wescottdesign.com/actfes/actfes.html |
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