Title :
Control of bulk modulus of oil in hydraulic systems
Author :
Wang, Jing ; Gong, Guofang ; Yang, Huayong
Author_Institution :
State Key Lab. of Fluid Power Transm. & Control, Zhejiang Univ., Hangzhou
Abstract :
In view of requirements for better position accuracy, response time and stability of hydraulic system, it is more important than ever to pay attention to bulk modulus of hydraulic oil. In this paper, the effects of the bulk modulus of hydraulic oil on system performance and the entrapped air on bulk modulus have been analyzed. A method of online vacuum degassing in a sealed system has been used to increase the effective bulk modulus of hydraulic oil, and a device has been developed to measure oil bulk modulus online. The experimental results show that the bulk modulus of hydraulic oil can be controlled in real system effectively by the method mentioned above.
Keywords :
elastic moduli; hydraulic systems; oils; position control; stability; bulk modulus; hydraulic oil; hydraulic system; online vacuum degassing; position accuracy; response time; stability; system performance; Analytical models; Control systems; Delay; Frequency; Hydraulic systems; Petroleum; Pistons; Stability; Vacuum systems; Valves; Bulk modulus of hydraulic oil; Hydraulic system; Online measurement; Vacuum degassing;
Conference_Titel :
Advanced Intelligent Mechatronics, 2008. AIM 2008. IEEE/ASME International Conference on
Conference_Location :
Xian
Print_ISBN :
978-1-4244-2494-8
Electronic_ISBN :
978-1-4244-2495-5
DOI :
10.1109/AIM.2008.4601865
