Search found 3 matches

by hassmaschine
Thu May 22, 2008 3:45 pm
Forum: FreeEMS Firmware Dev
Topic: Fixed point mathematics [now with POLL please vote]
Replies: 33
Views: 41546

Re: Fixed point mathematics

We have discussed this at some length previously... I understand Hass's comments. It makes sense that a flat VE will not be hurt by taking multiply map out of the fuel equation and maybe even help. What I still do not get is the thought that a VE limit is a problem. It really depends, as I see it, ...
by hassmaschine
Thu May 15, 2008 12:07 am
Forum: FreeEMS Firmware Dev
Topic: Fixed point mathematics [now with POLL please vote]
Replies: 33
Views: 41546

Re: Fixed point mathematics

yeah, i think that's my main issue - the individual VE entries in the table shouldn't be defining the resolution. it makes for a pretty big tuning mess unless you have a flatter VE table (which multiply map does help somewhat). I do like the flexibility of 3 VE tables, multiply, and additive - i was...
by hassmaschine
Wed May 14, 2008 9:04 pm
Forum: FreeEMS Firmware Dev
Topic: Fixed point mathematics [now with POLL please vote]
Replies: 33
Views: 41546

Re: Fixed point mathematics

I think there are a few ways to use 16 bit VE values - you could either have a whole number in the VE table, and divide it by X to get the "real" VE, or you could simply add decimal places. I don't know if that much resolution is truely neccesary though - highly accurate injector PW contro...