driving the motor in {TAIL ~ accordance} with the fed input signal to move the movable member to {HEAD ~ the desired final position} 
driving the motor in { TAIL ~ accordance } with the fed input signal to move the movable member to { HEAD ~ the desired final position }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD