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