[Coco] Artificial Intelligent (AI) Opponent

[Dave Philipsen]

A lot of applications don’t require PID. You just use a feedback amplifier to drive a servo, essentially just the ‘P’ of the equation. But when you need to be more precise or perhaps overcome certain variations in the operating environment then PID works great.  Back then I had to buy a book with a chapter on it to understand how to write the program. We used 12-bit ADCs and calculated with integer arithmetic (no floating point).

I designed some servo boards for hydraulic valves that drove large cylinders used to move a motion base simulator ride and that did not require PID.

On the other hand, I worked with a company in Korea on a huge motion base simulator ride that carried upwards of 2-3 dozen people and I believe PID was used for that (by means of a PLC). The company specialized in military aircraft simulators but they got involved with the entertainment business mostly because no one had ever made a motion base that large for entertainment purposes.  The hydraulic pump was about the size of a medium-sized truck!


Dave

> On Jan 2, 2018, at 8:51 AM, Allen Huffman <alsplace at pobox.com> wrote:
> 
> 
> 
>> On Jan 2, 2018, at 8:48 AM, Dave Philipsen <dave at davebiz.com> wrote:
>> 
>> Cool. So the feedback on the fire nozzle was some sort of flow sensor? And I’m eager to know how you would have incorporated a PID loop into a garage door opener!
> 
> My previous job was working on oil industry "flow computers" and the made big use of PID loops. I’d never heard of them before then.
> 
> Now I wonder if we look up the old A-BUS interface stuff if they would be discussed for hardware those boards could be hooked up to.
> 
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