MPG Cruise Control Algorithm

[GasSavers_maximilian]

Just for kicks I wrote up the algorithm I currently follow when driving. It's very similar to the last one. Just stays in coast mode once it enters it until the speed reaches the minimum allowable. Obviously I adjust it to account for stops and sharp curves. The GPS algorithm is for that info.

Repeat {

if( grade <= MIN_GRADE_FOR_COASTING) {

// on steep downhill
while( speed >= MIN_SPEED ) {

coast;

}

} else if( speed <= MIN_SPEED ) {

// very steep uphill, economy is not the concern
adjust throttle as needed to maintain MIN_SPEED;

} else {

// slight uphill, level, or slight downhill
compute speed for maximum efficiency;
// for a level, this will be a cruise speed of around 50-55
// for slight uphill, this will be slower than the cruise speed
// for slight downhill, this will be faster than the cruise speed

}

}