Eliminating sizing error in direct-driven hydraulics

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussa



  • Fujian University of Technology


This paper presents a realization of decentralized hydraulics for industrial applications and off-road machinery by means of direct-driven hydraulics (DDH). DDH consists of two pump/motor units driven by a servomotor. These units should be dimensioned to the match expected flows of the corresponding chamber in a differential cylinder. However, the sizing error between the available pump units causes an excess pressure rise in the chambers and degrades the system efficiency. Therefore, this paper investigates elimination of the sizing error with proposed solutions utilizing hydraulic accumulator and gear selection respectively. Created Matlab/Simulink models were utilized to investigate the system performance from an energy efficiency point of view. The results showed that both of the proposed solutions are viable approaches to improve the energy efficiency of the DDH setup. The proposed hydraulic solution was implemented in the DDH setup of a crane and measurements were
performed to validate the built DDH model.


OtsikkoThe 10th JFPS International symposium on Fluid Power, Fukuoka, Oct 24-27, 2017
TilaJulkaistu - 24 lokakuuta 2017
OKM-julkaisutyyppiD3 Ammatillisen konferenssin julkaisusarja
Tapahtuma JFPS International Symposium on Fluid Power - Fukuoka, Japani
Kesto: 24 lokakuuta 201727 lokakuuta 2017
Konferenssinumero: 10


Conference JFPS International Symposium on Fluid Power

ID: 14806363