Compact pitch-compensated inductive displacement transducer

Details Compact pitch-compensated inductive displacement transducer Compact pitch-compensated inductive displacement transducer

2007-07-03

2007-07-03

LeDynh, Bot (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

C324S207120, C324S207170

Reexamination Certificate

active

11492366

ABSTRACT:
An induced current position transducer reduces spatial phase errors associated with layout constraints. Each winding of the transducer comprises a set of loops arranged in hypothetical basic polarity zones that alternate along the measuring axis and a set of loops arranged in hypothetical offset polarity zones that are offset from the basic polarity zones along the measuring axis. Hypothetical offset zones are defined at positions where basic and offset polarity zones that have opposite polarities overlap. Due to layout constraints, each winding may have an offset zone including an unbalancing coupling area that differs from the coupling area in the majority of offset zones. The windings are configured such that the amount of unbalanced coupling area included in the offset zones of each respective winding is approximately the same for each of the windings, making their respective phase errors approximately the same.

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patent: WO 97/19323 (1997-05-01), None

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