Differential Evolutionary Modeling with Residual Correction and Down-load Characteristic Analysis for Marine Turbocharged Unit

Abstract

Abstract:

Abstract： For the modeling and operation characteristic analysis of marine turbocharged unit, an improved differential evolutionary modeling method with residual correction was designed in this paper. This method adopted the differential evolution algorithm to identification model parameters based on the mechanistic model of turbocharged unit, and then used the residuals of original data and model outputs to correct errors, which avoided the deviation caused by experience or experimental data under ideal state. Simulation experiments were conducted based on this model and existing supercharged model to studied the dynamic characteristics of turbocharged unit in pastdown load process. The comparsion of the simulation result with the original data proved that the differential evolution algorithm with residual correction could automatically generate dominant model that met realtime and accuracy requirements in a given model space and parameter ranges. Further analysis of simulation results showed that there was ignificant lag of turbocharged unit in the pastdown load process.

Key words: turbocharging unit, differential evolutionary, residual modification, down-load characteristics

CLC Number:

NI He,XIAO Hang,ZENG Fanming,SUN Fengrui. Differential Evolutionary Modeling with Residual Correction and Down-load Characteristic Analysis for Marine Turbocharged Unit[J]. Journal of Shanghai Jiaotong University, 2015, 49(05): 620-625.

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