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Idle speed controller based on active disturbance rejection control in diesel engines

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Abstract

This study proposes a design for an idle speed controller to compensate for varying engine load and friction torque in passenger car diesel engines. An active disturbance rejection control (ADRC) framework, comprised of a disturbance compensator and a feedback controller, is applied to an idle speed controller to compensate for disturbances such as engine load and friction torque. In addition, a feedforward compensator is designed into the ADRC framework to improve disturbance rejection performance. The proposed controller is validated by engine and vehicle experiments and the experiment results are compared with a commercial controller.

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Abbreviations

u o :

feedback control input, Nm

u :

compensated control input, Nm

d :

disturbance, Nm

d u :

unmeasured disturbance, Nm

d m :

measured disturbance, Nm

T :

torque, Nm

T ind :

indicated torque, Nm

T loss :

friction torque, Nm

T load :

engine load torque, Nm

f :

total disturbance, Nm

N :

engine speed, rpm

Ṅ :

engine acceleration, rpm/s

J :

crank shaft inertia, kg·m2

l :

observer gain

τ o :

time delay at switch on, ms

τ f :

time delay at switch off, ms

V d :

displacement volume, m3

P ind :

indicated mean effective pressure, Pa

n c :

number of revolutions per power stroke

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Author information

Authors and Affiliations

  1. VC Controller SW Team, LG Electronics, 322 Gyeongmyeong-daero, Seo-gu, Incheon, 22744, Korea

    E. Kang

  2. Turbo Engine Research Lab, Hyundai Motor Group, 150 Hyundaiyeonguso-ro, Namyang-eup, Hwaseong-si, Gyeonggi, 18280, Korea

    S. Hong

  3. Department of Automotive Engineering, Hanyang University, Seoul, 04763, Korea

    M. Sunwoo

Authors
  1. E. Kang
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  2. S. Hong
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  3. M. Sunwoo
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Correspondence to M. Sunwoo.

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Kang, E., Hong, S. & Sunwoo, M. Idle speed controller based on active disturbance rejection control in diesel engines. Int.J Automot. Technol. 17, 937–945 (2016). https://doi.org/10.1007/s12239-016-0091-0

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  • DOI: https://doi.org/10.1007/s12239-016-0091-0

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