The controller 52 can include an algorithm to process {HEAD ~ the input} to achieve {TAIL ~ a weighted average} 
to achieve
The controller 52 can include an algorithm to process { HEAD ~ the input } to achieve { TAIL ~ a weighted average }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL