Jerzy Nabielec, Jacek Nalepa
A SIMULATION INVESTIGATION OF DIFFERENTIAL ALGORITHM FOR THE “BLIND CORRECTION” OF DYNAMIC ERROR IN MEASURING CHANNELS WITH PERIODIC NONSTATIONARITY

The paper presents the application of a differential algorithm for the “blind correction” method with respect to measuring systems where both: the measured signal and parameters of the measuring channels are varying with the same fundamental frequency. The influence of the measuring channels’ parameters on the effectiveness of correction was investigated for the polyharmonic case, using the simulation methods.

V. Pop, P.P.L. Regtien, H.J. Bergveld, P.H.L. Notten, J.H.G. Op het Veld
UNCERTAINTY ANALYSIS IN A REAL-TIME STATE-OF-CHARGE EVALUATION SYSTEM FOR LITHIUM-ION BATTERIES

Lithium-ion (Li-ion) is the most commonly used battery chemistry in portable applications nowadays. Accurate State-of-Charge (SoC) and remaining run-time (tr) calculation for portable devices is important for the user convenience and to prolong the lifetime of batteries. A new SoC algorithm for Li-ion batteries that combines adaptivity with direct measurement and book-keeping systems has been developed and implemented in a real-time evaluation system.
In this paper the error sources in the real-time SoC evaluation system with possible calibration solutions are described. The goal of the SoC system is to predict the remaining run-time of a Li-ion battery with an uncertainty of 1 minute or better under all realistic user conditions, including a wide variety of load currents and a wide temperature range.

R. Micheletti, R. Pieri
RATIONAL BUILDING ENERGY CONSUMPTION BY ADVANCED CONTROL TECHNOLOGIES BASED ON INSTANTANEOUS AVERAGE ACTIVE POWER MEASUREMENT

Fast and accurate measurement of the instantaneous average active power (IAAP) is useful for building Energy Management System (EMS) in order to assure quality of service such as continuity, optimize energy consumption and reduce carbon dioxide emission. In this paper the problems connected to the measurement of the instantaneous average active power for energy usage improving are discussed, also as the operational processes which deal to solve such problems.

Daniele Gallo, Annalisa Liccardo, Nicola Pasquino
PERFORMANCE ANALYSIS OF AN ACTIVE ENERGY INDUCTION METER USING AN INNOVATIVE APPROACH

The paper is focused on the performance analysis of an induction energy meter under different voltage and current waveforms, both sinusoidal and deformed, which resemble possible conditions of supply network encountered during normal operation. The measurement test bench and the experimental plan are presented. Experimental results are compared to a reference watthour meter, and the relative error is characterized in terms of dependence on input quantities.

Pasquale Arpaia, Fabrizio Clemente, Carmine Romanucci, Antonio Zanesco
EXPERIMENTAL CHARACTERIZATION OF AN EIS-BASED METHOD FOR LOWINVASIVE DIAGNOSIS OF PROSTHESIS OSSEOINTEGRATION

A digital measurement method for lowinvasive clinical diagnosis of metallic prosthesis osseointegration was proposed. Electrical impedance spectroscopy is exploited to characterize the quality of the interface bone-prosthesis tissue. In this paper, in vitro and in vivo experimental results of the application of the proposed method to the evaluation of osseointegration of metallic implants used for percutaneous fixation are shown with a specific clinical case study in audiology. In particular, a cochlear implant BAHA ® from Cochlear TM with direct bone conduction was used. In vivo measurements were performed on children with fixtures implanted respectively 7, 9, and 18 months before the test.