Inductive transducer measurement system

Details Inductive transducer measurement system Inductive transducer measurement system

2008-01-29

2008-01-29

Aurora, Reena (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

C324S207160

Reexamination Certificate

active

07323863

ABSTRACT:
An inductive transducer measurement system is provided. A measuring circuit simultaneously drives a plurality of transducer windings and measures their inductance by using a load impedance in an inductance measurement circuit configuration. The system may be designed such that a circuit characteristic that includes a measurement period value, a winding inductance value, and a non-inductive impedance value in series with the winding inductance, is set at a nominal value that suppresses a second harmonic error component that is inherent in the measuring circuit. When a three-phase winding configuration is used, preferred signal processing techniques may be used to cancel third harmonic errors in the system, which in combination with the second harmonic error suppression technique creates a variable inductance measurement system that is relatively free from errors.

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patent: 6859762 (2005-02-01), Mawet
patent: 2004/0085063 (2004-05-01), Jin et al.

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