Linear resolver utilizing plural nulled coil sets

摘要: A linear resolver utilizes multiple pairs of nulled coil sets arranged co-linearly for sensing the position edges a magnetically permeable object. An excitation produces an alternating magnetic field which is normally weakly coupled to across gap. As object covers area gap, coupling between and individual coils in set increased. Each output varies cyclically with increasing coverage The two each pair are offset from other so that their cyclical outputs by one quarter cycle, or 90° respect Detection means provided resolve precisely determine edge. processed separately detection can be detected.