Electronic guru's- need some help with electronic terms?

[stephen4785]

I use a program at work to hook up to waukesha engine(large v12 industrial engine). No one seems to understand exactly what there adjusting when they change the governor values. Can anyone explain (in laymans terms) some of these values? the ones in blue. The governor controls the throttle on the engine and basiclly looks like an electric motor with heim joint attached to the top and only moves the heim about 45 degress(0-100% throttle)
proportion gain
integral gain
differential gain
forward torque %
sync rpm
proportional sync
forward delay

[majorownage]

http://en.wikipedia.org/wiki/PID_controller

I wouldn't f around with them unless you want weird oscillations in rpm.

[Samhain]

A PID loop or calculation is used in this application to maintain rpm. Changing any of the three variables will affect speed, duration, and amplitude of the rpm relative to the desired rpm set point. Normally on equipment that is manufactured as an integrated package the factory set points for PID loops are pre calculated. Unless the machine is hunting above and below set point, adjustment is not needed.

[dee]

Can't help with the terms but Waukesha builds a huge engine.Is it on a generator or pump of some kind?

[stephen4785]

A PID loop or calculation is used in this application to maintain rpm. Changing any of the three variables will affect speed, duration, and amplitude of the rpm relative to the desired rpm set point. Normally on equipment that is manufactured as an integrated package the factory set points for PID loops are pre calculated. Unless the machine is hunting above and below set point, adjustment is not needed.

Im having surging issues. Iv got several units that surge about 50 rpm. Some governors sit and flutter badly but it doesnt seem to hurt the rpm. Im wondering if I can change anything to get them to operate a lot smoother.

[stephen4785]

Can't help with the terms but Waukesha builds a huge engine.Is it on a generator or pump of some kind?

They power natural gas compressors. The engines are 190L V12. If I could find a decent picture online Id post one but all the pics are tiny and dont show any size reference for some reason.

[dee]

I thought about it possibly being a power source for a compressor. Our city has one that powers a generator at the waste water plant that runs on methane gas it's older than dirt and has no electronics on it.

[4.6coupe]

Something is out of adjustment causing the governor to come into play. Changing the governor settings to compensate or alleviate said error is a big no no in my book. Think of a governor as a safety device.

At least thats how our governors work.

[psdtech]

5794esm? Is it still running Esm for emissions or has it been switched over to emit or afr controller? Also is a duel drive system or direct?

[jyro]

My simplified version of PID
P = the magnitude of the correction change, sometimes called gain
I = a time related setting, sometimes called reset, how often the P is applied
D = delays the I and waits for a change in the error signal

http://www.expertune.com/tutor.aspx