The excitation coils 45a and 45b are individually and separately excited, using pulsing that, both in magnitude and timing, emulates {HEAD ~ the interference signal field} of {TAIL ~ the slip drive stepping motor} 23 
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The excitation coils 45a and 45b are individually and separately excited , using pulsing that , both in magnitude and timing , emulates { HEAD ~ the interference signal field } of { TAIL ~ the slip drive stepping motor } 23
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH