Title :
A multichannel DSP-based instrument for displacement measurement using differential variable reluctance transducer
Author :
Flammini, Alessandra ; Marioli, Daniele ; Sisinni, Emiliano ; Taroni, Andrea
Author_Institution :
Dept. of Electron. for the Autom., Univ. of Brescia, Italy
Abstract :
This paper presents a novel instrument for the analysis of signals coming from a matrix of differential variable reluctance transducers (DVRTs). The signal processing technique is based on a fast Fourier transform (FFT) evaluation. The main objectives are compactness and a short elaboration time. In particular, information from up to 11 different sensors can be simultaneously processed with an overall measuring time of about 300 μs. Experimental results show a standard deviation in the ±0.3 μm order.
Keywords :
array signal processing; differential transformers; displacement measurement; fast Fourier transforms; position measurement; signal processing equipment; transducers; DVRT; array signal processing; compactness; differential transformers; differential variable reluctance transducer; digital signal processors; displacement measurement; elaboration time; fast Fourier transform evaluation; multichannel DSP based instrument; position measurement; real-time systems; sensor information; signal analysis; Coils; Digital signal processing; Digital signal processors; Displacement measurement; Instruments; Sensor phenomena and characterization; Signal analysis; Time measurement; Transducers; Transformers;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2004.834052
