Precise Fitting Algorithm for Speed Performance Curve of Medium-Low Speed Maglev Train Based on On-Site Testing Operation Data and Kalman Filtering

2021 ◽  
Author(s):  
Jiawei Ren ◽  
Lu Wang ◽  
Zhiyi Ye ◽  
Zan Yang ◽  
Wei Nai
Keyword(s):  
Kalman Filtering ◽  
Performance Curve ◽  
Site Testing ◽  
Maglev Train ◽  
Low Speed ◽  
Fitting Algorithm ◽  
Speed Performance

Compressor Performance Curve Extrapolation Method Based on the Similarity Theory

2014 ◽  
Vol 672-674 ◽  
pp. 1545-1549
Author(s):  
Zhi Tao Wang ◽  
Bing Bai ◽  
Shu Ying Li ◽  
Qing Cai Yang ◽  
Meng Qi Wang
Keyword(s):  
Incompressible Fluid ◽  
Similarity Theory ◽  
Optimization Method ◽  
Performance Curve ◽  
Low Speed ◽  
Working Medium ◽  
Speed Performance ◽  
Compressor Performance ◽  
Startup Process ◽  
Relationship Equation

Due to the fact that the low speed pump similarity theory is only applicable to incompressible fluid, this theory cannot be used for extrapolation of compressor performance curve. Considering the compressibility of working medium; therefore, this paper has modified the similarity theory and put forward a new index relationship equation. The two low speed performance lines which are already known were used to get the similar working points and extrapolate the performance lines through the optimization method. Compared with the existing performance lines, the results show that the method is simple, convenient and qualified with practicability and accuracy. This method plays an important role on studying startup process of a gas turbine and improving the accuracy of the simulation of startup process.

Experimental Low-Speed Performance Evaluation of Sensorless Passive Algorithms for SPMSM

2021 ◽  
pp. 1-1
Author(s):  
Alessandro Benevieri ◽  
Mario Marchesoni ◽  
Massimiliano Passalacqua ◽  
Luis Vaccaro
Keyword(s):  
Performance Evaluation ◽  
Low Speed ◽  
Speed Performance

scholarly journals Relation between Valve Angle Area and Low Speed Performance of a Uniflow-Scavenged Engine

1968 ◽  
Vol 34 (259) ◽  
pp. 530-536
Author(s):  
Fujio NAGAO ◽  
Kazuie NISHIWAKI ◽  
Kazuhiko OTSUBO ◽  
Fuminobu YOKOYAMA ◽  
Tetsuo OKADA
Keyword(s):  
Low Speed ◽  
Speed Performance ◽  
Valve Angle
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