A Digital Hydraulic Load-Sensing System Based on Hydraulic Free Piston Engine

Feng Wang; Jiaming Wu; Bing Xu; Zongxuan Sun

doi:10.1115/FPMC2022-88601

A Digital Hydraulic Load-Sensing System Based on Hydraulic Free Piston Engine

Feng Wang
, Jiaming Wu
, Bing Xu
, Zongxuan Sun

Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Scopus citations

Abstract

The hydraulic load-sensing system is a more efficient system solution than constant pressure system in mobile machine. However, the overall system efficiency for multiple actuators is still low since this centralized hydraulic control system only adapts to the highest load pressure. Therefore in this paper, a distributed hydraulic control system where each function is powered by a hydraulic free piston engine is proposed. Compared with centralized solution, it is more efficient since the power of hydraulic free piston engine is tailored to each function. By integrating small inertia linear engine and pump piston in one unit, the hydraulic free piston engine is an efficient and fast response hydraulic power source. Since the hydraulic free piston engine is essentially a digital hydraulic power source, a digital load-sensing control is proposed in this study. The system architecture, modeling, controller design and performance of the digital hydraulic load-sensing control system are presented. A test bench is developed to verify the system feasibility and performance.

Original language	English (US)
Title of host publication	Proceedings of BATH/ASME 2022 Symposium on Fluid Power and Motion Control, FPMC 2022
Publisher	American Society of Mechanical Engineers
ISBN (Electronic)	9780791886335
DOIs	https://doi.org/10.1115/FPMC2022-88601
State	Published - 2022
Event	BATH/ASME 2022 Symposium on Fluid Power and Motion Control, FPMC 2022 - Bath, United Kingdom Duration: Sep 14 2022 → Sep 16 2022

Publication series

Name	Proceedings of BATH/ASME 2022 Symposium on Fluid Power and Motion Control, FPMC 2022

Conference

Conference	BATH/ASME 2022 Symposium on Fluid Power and Motion Control, FPMC 2022
Country/Territory	United Kingdom
City	Bath
Period	9/14/22 → 9/16/22

Bibliographical note

Funding Information:
This research is conducted in the State Key Laboratory of Fluid Power and Mechatronic Systems at Zhejiang University. This study is supported by National Natural Science Foundation of China (grant number: 51875509 and 91748210).

Publisher Copyright:
© 2022 by ASME.

Keywords

Hydraulic free piston engine
centralized hydraulic control
digital hydraulic load-sensing control system
distributed hydraulic system
mobile machine

Publisher link

10.1115/FPMC2022-88601

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Cite this

Wang, F., Wu, J., Xu, B., & Sun, Z. (2022). A Digital Hydraulic Load-Sensing System Based on Hydraulic Free Piston Engine. In Proceedings of BATH/ASME 2022 Symposium on Fluid Power and Motion Control, FPMC 2022 Article V001T01A007 (Proceedings of BATH/ASME 2022 Symposium on Fluid Power and Motion Control, FPMC 2022). American Society of Mechanical Engineers. https://doi.org/10.1115/FPMC2022-88601

A Digital Hydraulic Load-Sensing System Based on Hydraulic Free Piston Engine. / Wang, Feng; Wu, Jiaming; Xu, Bing et al.
Proceedings of BATH/ASME 2022 Symposium on Fluid Power and Motion Control, FPMC 2022. American Society of Mechanical Engineers, 2022. V001T01A007 (Proceedings of BATH/ASME 2022 Symposium on Fluid Power and Motion Control, FPMC 2022).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Wang, F, Wu, J, Xu, B & Sun, Z 2022, A Digital Hydraulic Load-Sensing System Based on Hydraulic Free Piston Engine. in Proceedings of BATH/ASME 2022 Symposium on Fluid Power and Motion Control, FPMC 2022., V001T01A007, Proceedings of BATH/ASME 2022 Symposium on Fluid Power and Motion Control, FPMC 2022, American Society of Mechanical Engineers, BATH/ASME 2022 Symposium on Fluid Power and Motion Control, FPMC 2022, Bath, United Kingdom, 9/14/22. https://doi.org/10.1115/FPMC2022-88601

Wang F, Wu J, Xu B, Sun Z. A Digital Hydraulic Load-Sensing System Based on Hydraulic Free Piston Engine. In Proceedings of BATH/ASME 2022 Symposium on Fluid Power and Motion Control, FPMC 2022. American Society of Mechanical Engineers. 2022. V001T01A007. (Proceedings of BATH/ASME 2022 Symposium on Fluid Power and Motion Control, FPMC 2022). doi: 10.1115/FPMC2022-88601

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title = "A Digital Hydraulic Load-Sensing System Based on Hydraulic Free Piston Engine",

abstract = "The hydraulic load-sensing system is a more efficient system solution than constant pressure system in mobile machine. However, the overall system efficiency for multiple actuators is still low since this centralized hydraulic control system only adapts to the highest load pressure. Therefore in this paper, a distributed hydraulic control system where each function is powered by a hydraulic free piston engine is proposed. Compared with centralized solution, it is more efficient since the power of hydraulic free piston engine is tailored to each function. By integrating small inertia linear engine and pump piston in one unit, the hydraulic free piston engine is an efficient and fast response hydraulic power source. Since the hydraulic free piston engine is essentially a digital hydraulic power source, a digital load-sensing control is proposed in this study. The system architecture, modeling, controller design and performance of the digital hydraulic load-sensing control system are presented. A test bench is developed to verify the system feasibility and performance.",

keywords = "Hydraulic free piston engine, centralized hydraulic control, digital hydraulic load-sensing control system, distributed hydraulic system, mobile machine",

author = "Feng Wang and Jiaming Wu and Bing Xu and Zongxuan Sun",

note = "Funding Information: This research is conducted in the State Key Laboratory of Fluid Power and Mechatronic Systems at Zhejiang University. This study is supported by National Natural Science Foundation of China (grant number: 51875509 and 91748210). Publisher Copyright: {\textcopyright} 2022 by ASME.; BATH/ASME 2022 Symposium on Fluid Power and Motion Control, FPMC 2022 ; Conference date: 14-09-2022 Through 16-09-2022",

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AU - Xu, Bing

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N1 - Funding Information: This research is conducted in the State Key Laboratory of Fluid Power and Mechatronic Systems at Zhejiang University. This study is supported by National Natural Science Foundation of China (grant number: 51875509 and 91748210). Publisher Copyright: © 2022 by ASME.

PY - 2022

Y1 - 2022

N2 - The hydraulic load-sensing system is a more efficient system solution than constant pressure system in mobile machine. However, the overall system efficiency for multiple actuators is still low since this centralized hydraulic control system only adapts to the highest load pressure. Therefore in this paper, a distributed hydraulic control system where each function is powered by a hydraulic free piston engine is proposed. Compared with centralized solution, it is more efficient since the power of hydraulic free piston engine is tailored to each function. By integrating small inertia linear engine and pump piston in one unit, the hydraulic free piston engine is an efficient and fast response hydraulic power source. Since the hydraulic free piston engine is essentially a digital hydraulic power source, a digital load-sensing control is proposed in this study. The system architecture, modeling, controller design and performance of the digital hydraulic load-sensing control system are presented. A test bench is developed to verify the system feasibility and performance.

AB - The hydraulic load-sensing system is a more efficient system solution than constant pressure system in mobile machine. However, the overall system efficiency for multiple actuators is still low since this centralized hydraulic control system only adapts to the highest load pressure. Therefore in this paper, a distributed hydraulic control system where each function is powered by a hydraulic free piston engine is proposed. Compared with centralized solution, it is more efficient since the power of hydraulic free piston engine is tailored to each function. By integrating small inertia linear engine and pump piston in one unit, the hydraulic free piston engine is an efficient and fast response hydraulic power source. Since the hydraulic free piston engine is essentially a digital hydraulic power source, a digital load-sensing control is proposed in this study. The system architecture, modeling, controller design and performance of the digital hydraulic load-sensing control system are presented. A test bench is developed to verify the system feasibility and performance.

KW - Hydraulic free piston engine

KW - centralized hydraulic control

KW - digital hydraulic load-sensing control system

KW - distributed hydraulic system

KW - mobile machine

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M3 - Conference contribution

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BT - Proceedings of BATH/ASME 2022 Symposium on Fluid Power and Motion Control, FPMC 2022

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ER -

A Digital Hydraulic Load-Sensing System Based on Hydraulic Free Piston Engine

Abstract

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