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CLC number: TH137

On-line Access: 2008-04-15

Received: 2007-10-16

Revision Accepted: 2008-01-28

Crosschecked: 0000-00-00

Cited: 27

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Citations:  Bibtex RefMan EndNote GB/T7714

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Journal of Zhejiang University SCIENCE A 2008 Vol.9 No.5 P.624-632


Dynamic simulation and optimal control strategy for a parallel hybrid hydraulic excavator

Author(s):  Xiao LIN, Shuang-xia PAN, Dong-yun WANG

Affiliation(s):  State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   linxiao12@163.com

Key Words:  Hybrid system, Hydraulic excavator, Multi-work-point dynamic control, Direct torque control

Xiao LIN, Shuang-xia PAN, Dong-yun WANG. Dynamic simulation and optimal control strategy for a parallel hybrid hydraulic excavator[J]. Journal of Zhejiang University Science A, 2008, 9(5): 624-632.

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journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

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%T Dynamic simulation and optimal control strategy for a parallel hybrid hydraulic excavator
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%A Shuang-xia PAN
%A Dong-yun WANG
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%@ 1673-565X
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A071552

T1 - Dynamic simulation and optimal control strategy for a parallel hybrid hydraulic excavator
A1 - Xiao LIN
A1 - Shuang-xia PAN
A1 - Dong-yun WANG
J0 - Journal of Zhejiang University Science A
VL - 9
IS - 5
SP - 624
EP - 632
%@ 1673-565X
Y1 - 2008
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A071552

The primary focus of this study is to investigate the control strategies of a hybrid system used in hydraulic excavators. First, the structure and evaluation target of hybrid hydraulic excavators are analyzed. Then the dynamic system model including batteries, motor and engine is built as the simulation environment to obtain control results. A so-called multi-work-point dynamic control strategy, which has both closed-loop speed PI (proportion integral) control and direct torque control, is proposed and studied in the simulation model. Simulation results indicate that the hybrid system with this strategy can meet the power demand and achieve better system stability and higher fuel efficiency.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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