Compensation control for the supply pressure fluctuation in electro-hydraulic load simulator

Author

Songshan, Han ; Zongxia, Jiao ; Yaoxing, Shang ; Chengwen, Wang ; Shuai, Wu

Author_Institution

Sci. & Technol. on Aircraft Control Lab., Beihang Univ., Beijing, China

fYear

2011

fDate

17-20 Aug. 2011

Firstpage

914

Lastpage

919

Abstract

The capability of depressing pressure fluctuation is important to achieve high tracking performance of electro-hydraulic load simulator (EHLS). This paper summarizes the major factors that may cause the pressure fluctuation in hydraulic systems. The effect of pressure fluctuation on the control precision of EHLS is also analyzed. To further improve the system robustness, a generic compensation algorithm of pressure is proposed to adjust the control gain in forward channel on-line, which utilizes the feedback of supply pressure to decrease the interference of pressure fluctuation. The simulation and experiments show that this algorithm can effectively reduce the torque ripples and improve the tracking performance of EHLS.

Keywords

compensation; electrohydraulic control equipment; EHLS; electro-hydraulic load simulator; generic compensation algorithm; hydraulic systems; supply pressure fluctuation; torque ripples; Fluctuations; Load modeling; Loading; Mathematical model; Servomotors; Torque; Valves; Electro-hydraulic load simulator; Pressure compensation; Supply pressure fluctuation; Variable gain;

fLanguage

English

Publisher

ieee

Conference_Titel

Fluid Power and Mechatronics (FPM), 2011 International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-8451-5

Type

conf

DOI

10.1109/FPM.2011.6045892

Filename

6045892