An Improved UKF Algorithm based on Minimum Sample Skewness and the Ratio Correction Factor

2013 ◽  
Vol 5 (2) ◽  
pp. 747-754
Author(s):  
Xiuhua ZHANG ◽  
Lianjun ZHANG ◽  
Yongcheng JIANG
Keyword(s):  
Correction Factor ◽  
Minimum Sample ◽  
Ratio Correction

scholarly journals Interpolation formulas for Balling´'s alcohol factors

2020 ◽  
Vol 66 (2) ◽  
pp. 239-244
Author(s):  
Jan Šavel ◽  
Petr Košin ◽  
Adam Brož ◽  
Jakub Vlček
Keyword(s):  
Correction Factor ◽  
Sample Volume ◽  
Calculation Formula ◽  
Isolated Points ◽  
Minimum Sample ◽  
Beer Production

The article deals with the interpolation of the Balling alcohol factors, given at isolated points in 1% (m/m) increments ranging from 1 to 30% in the Hrach table published in 1927. Interpolation was necessery for the calculation of real (RDF) or apparent (ADF) degree of attenuation, according to which optimal barley varieties were selected for beer production. Analytica EBC initially preferred ADF, although it also reported RDF, used by ASBC. According to ASBC, the Balling RDF is multiplied by a correction factor or calculated using a modified calculation formula. Both ways gave the same results and increased Balling RDF values by 1-2% m/m. Refractometry with a pocket digital refractometer set to °Bx allows beer analysis from a minimum sample volume.

scholarly journals The Method to Determine the Turns Ratio Correction of the Inductive Current Transformer

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8602
Author(s):  
Ernest Stano
Keyword(s):  
Correction Factor ◽  
Current Transformer ◽  
Frequency Characteristics ◽  
Magnetization Curves ◽  
Current Transformers ◽  
Current Error ◽  
Ratio Correction ◽  
Secondary Winding ◽  
Load Conditions ◽  
Load State

This paper presents the method for evaluation of the turns ratio correction of the inductive current transformer using the magnetization curves determined at the non-load state and in the load conditions. The presented method may be applied to determine even a fractional winding correction factor. The standard IEC 61869-2 provides the method to determine the turns ratio correction of the tested CT from the measured rms values of voltages on its primary and secondary winding in the non-load state. However, this approach is limited in determining the significant changes in the number of turns of the secondary winding. Moreover, the paper presents the influence of the applied turns ratio correction on the frequency characteristics of the current error and phase displacement of the inductive current transformers evaluated for the transformation of the distorted current.

Performance enhancement of normal contact ratio gearing system through correction factor

2019 ◽  
Vol 13 (3) ◽  
pp. 5242-5258
Author(s):  
R. Ravivarman ◽  
K. Palaniradja ◽  
R. Prabhu Sekar
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Correction Factor ◽  
Bending Strength ◽  
Performance Enhancement ◽  
Transmission Ratio ◽  
Contact Ratio ◽  
Element Analysis ◽  
Normal Contact ◽  
Root Region

As lined, higher transmission ratio drives system will have uneven stresses in the root region of the pinion and wheel. To enrich this agility of uneven stresses in normal-contact ratio (NCR) gearing system, an enhanced system is desirable to be industrialized. To attain this objective, it is proposed to put on the idea of modifying the correction factor in such a manner that the bending strength of the gearing system is improved. In this work, the correction factor is modified in such a way that the stress in the root region is equalized between the pinion and wheel. This equalization of stresses is carried out by providing a correction factor in three circumstances: in pinion; wheel and both the pinion and the wheel. Henceforth performances of this S+, S0 and S- drives are evaluated in finite element analysis (FEA) and compared for balanced root stresses in parallel shaft spur gearing systems. It is seen that the outcomes gained from the modified drive have enhanced performance than the standard drive.

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