[TriEmbed] ABC's of Electronics (V, I, Z)

[Rodney Radford]

I have been thinking of giving a talk on motor types and motor control at a
future robotics meeting (we meet in the same room on the 1st Monday of the
month).

I would cover:

    * Basic types of motors
          + R/C servo (both positional and continuous)
          + DC brushed
          + DC brushless (only to describe how they work, but not delve
into detail as this is a full talk by itself)

     * Basic control circuits:
           + Simple R/C servo (varying pulse width to control position)
           + Simple on/off of a DC brushed motor (no change direction)
           + Using PWM to control speed (open loop)
           + Using a relay to change motor direction
           + Replacing the relay with an H-bridge

That should be enough for one session...  but the plan is to lead up to the
next session where I want to get into closed-loop motor speed and position
control:

    * Sensing motor speed/direction
         + analog feedback (generator)
         + optical break or Hall effect sensors
         + quadrature encoders, quadrature + home sensors
    * Basic types of motor control algorithms
         + on until set point, then off
         + proportional (the P of PID)
         + PI (add the integral term)
         + PD (add the derivative term)
         + PID (all together)
     * More complicated controls
         + PIDs within PIDs (oh my)
         + changing PID parameters on the fly

The plan is to show each of the P, PI, PD, and PID graphically, which is
what I am working on now - a motor control board that implements PID but
also allows me to graph the motor response curve so we can see what happens
as we change (or eliminate/add) each parameter.

This talk may be of interest to the TriEmbed group - if so, you could
either attend the robotics meeting, or I could give it again.

I could do the first talk now, but I am about 2-3 months away from having
what I want for the second talk.

Is there any interest?


On Tue, Jun 9, 2015 at 2:44 PM, Shane Trent via TriEmbed <
triembed at triembed.org> wrote:

> Now that is an art!
>
> Sent from my iPhone
>
> On Jun 9, 2015, at 1:08 PM, Craig Cook via TriEmbed <triembed at triembed.org>
> wrote:
>
> >> I would be interested in giving a mini-talk on electronics terminology.
> >> After all, you can't spell Geek without "EE."  :-)
> >>
> >> Here are some possibilities, but I need your input...
> >
> > How about "how to read a datasheet?"
> >
> > Sounds like a great talk
> >
> > Thanks
> >
> >
> > Craig
> >
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