The servo control energizes the linear electromagnetic actuator with {HEAD ~ a current} which always has the proper polarity and {TAIL ~ value} to compensate for losses 
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The servo control energizes the linear electromagnetic actuator with { HEAD ~ a current } which always has the proper polarity and { TAIL ~ value } to compensate for losses
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH