a motor drive for driving {HEAD ~ said motor} on the basis of {TAIL ~ the target motor current} set by said control unit; and 
a motor drive for driving { HEAD ~ said motor } on the basis of { TAIL ~ the target motor current } set by said control unit ; and
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH