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International Journal of Automotive Technology

, Volume 19, Issue 4, pp 635–642 | Cite as

Gaussian Process Regression Feedforward Controller for Diesel Engine Airpath

  • Volkan Aran
  • Mustafa Unel
Article
  • 44 Downloads

Abstract

Gaussian Process Regression (GPR) provides emerging modeling opportunities for diesel engine control. Recent serial production hardwares increase online calculation capabilities of the engine control units. This paper presents a GPR modeling for feedforward part of the diesel engine airpath controller. A variable geotmetry turbine (VGT) and an exhaust gas recirculation (EGR) valve outer loop controllers are developed. The GPR feedforward models are trained with a series of mapping data with physically related inputs instead of speed and torque utilized in conventional control schemes. A physical model-free and calibratable controller structure is proposed for hardware flexibility. Furthermore, a discrete time sliding mode controller (SMC) is utilized as a feedback controller. Feedforward modeling and the subsequent airpath controller (SMC+GPR) are implemented on the physical diesel engine model and the performance of the proposed controller is compared with a conventional PID controller with table based feedforward.

Key Words

Gaussian process regression Feedforward control Discrete time sliding mode control Airpath control 

Nomenclature

Pi

nomenclature

Px

intake manifold pressure

Pc

exhaust manifold pressure

Pa

compressor power

R

ambient pressure

R

ideal gas constant

Ti

intake manifold temperature

Tx

exhaust manifold temperature

Ta

ambient temperature

Vi

intake manifold volume

τ

turbocharger time constant

Wci

compressor mass airflow

Wxi

exhaust gas recirculation mass flow

Wie

engine inlet gas mass flow

Wxt

turbine inlet gas mass flow

Wf

fuel mass flow

ηc

isentropic compressor efficiency

ηT

turbine total efficiency

c

specific heat of air

uff

feedforward control term

ufb

feedback control component

ArEGR

exhaust gas recirculation valve area

hxt

exhaust gas enthalpy

u1

controlled input 1, area of EGR

u2

controlled input 2, area of VGT

μ

isentropic ratio

rVGT

VGT vane position

rEGR

EGR valve position

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Copyright information

© The Korean Society of Automotive Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Sancaktepe Engineering CenterFORD OTOSAN, Akpınar Mah. SancaktepeIstanbulTurkey
  2. 2.Integrated Manufacturing Technologies Research and Application CenterSabanci UniversityIstanbulTurkey
  3. 3.Faculty of Engineering and Natural SciencesSabancı UniversityIstanbulTurkey

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