开云体育

Hi Guys, I am losing a lot of hair on this one. I have two PCBs that both have MAX232 chips. One is a cpe the other has an N suffix. That part really doesn't matter as I have swapped the chips back

To me this seems like a PI vs. a P control. I don't quite see what it has to do with velocity vs. position? I would say a PID can be used for RPM control as well, what is wrong with integrating the

Hi Chris, Since you are wanting to control the speed of the motor, you want to implement a velocity control loop, not position control loop. Therefore you don't have any I term, just P and D. Thinking

Richard, Yes, the net contains a ton of information on PID. I found a couple of good pages on the subject - one I liked in particular gave good examples of PID and PI etc. Like dummy, I didn't

On Wednesday 03 May 2006 06:07 pm, Chuck Merja wrote: > A while back this list discussed a benchtop multiple voltage supply. I am > a farm kid who likes gadgets and am frustrated by all the individual

<lcdpublishing@...> wrote: PID control of motors is a favorite topic for Google. I just did a search on 'pid control of dc mot

A while back this list discussed a benchtop multiple voltage supply. I am a farm kid who likes gadgets and am frustrated by all the individual voltage adapters I need to plug into the cig lighter, so

After pondering the thought about current sensing, the only thing I could come up with is that I could use that to detect if the motor is nearing stall. Whereas with only the tachometer feedback, I

Hell Roy, if it involves electronics, I know it ain't gonna be simple! Although there isn't a whole lot of magic as to "what to do if this occurs". With only about 10 minutes of thought into it so

But that's basically what you do. If you still don't get the RPM up with pushing lotsa power in you either stop and shut down right there or you rely on the current limit to prevent the motor making

It depends on what you want to keep constant. If you want constant RPM the current does not really give you any valuable information for this loop. It would give you information about the torque

It's not quite

Somebody pointed me to Lowe's as having one of those a while back. I haven't gotten around to getting it yet, though, and I probably should. :-) -- Member of the toughest, meanest, deadliest, most

Ah but this is a great chance to learn a lot for me too! While at first glance, you wouldn't think a PCB dril would cause a load on a spindle motor, however, when that motor is little, the load is

A process (motor), with control input (PWM) and feedback output (opto tach) and a controller hooked up to the two. Well, yes! With the right bit of software that is. Feedback control can greatly

Hi Guys, For this little machine I will be going with a variable speed spindle driven by a small DC motor. I will be using an AVR to control it's speed via PWM. I had planed on putting a photo

Chris, Thanks for the contact. Joe

You might find the Dremel drill press adapter at micro-mark. They used to carry it, but a quick search of their site just now didn't turn up anything. That doesn't mean it isn't there though, the site