The individual input control signal for each power source is obtained by summing the error signal with {TAIL ~ the individual signal} representing {HEAD ~ the variable component} 
The individual input control signal for each power source is obtained by summing the error signal with { TAIL ~ the individual signal } representing { HEAD ~ the variable component }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD