Nonsymmetrical flow compensation using hydraulic accumulator in direct driven differential cylinder application

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussavertaisarvioitu




This paper presents a novel hydraulic setup, direct driven hydraulics (DDH), which consists of two pumps on a common axis driven by a servomotor. These pumps are directly connected to each chamber of a differential hydraulic cylinder. The pumps are dimensioned so that the respective nominal sizes corresponds to the expected flows of each cylinder chamber. However, the dimensioning of the pumps are slightly off, leading to an excess rise of pressure in the B-chamber. This paper investigates if the implementation of a hydraulic accumulator can mitigate this mismatch problem. A Matlab/Simulink model was created and utilized for simulating the optimal accumulator parameters for energy efficiency. The optimal alternative was implemented to the research setup and energy efficiency measurements are performed with various loads and different ambient temperatures. The results shows that this solution was a viable alternative and that the energy efficiency of this setup was improved.


Otsikko9th FPNI Ph.D. Symposium on Fluid Power, FPNI 2016
TilaJulkaistu - 2016
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaFPNI Ph.D. Symposium on Fluid Power - Florianopolis, Brasilia
Kesto: 26 lokakuuta 201628 lokakuuta 2016
Konferenssinumero: 9


ConferenceFPNI Ph.D. Symposium on Fluid Power

ID: 10437448