Thermal-hydraulic modeling and analysis of hydraulic system by pseudo-bond graph
来源期刊：中南大学学报(英文版)2015年第7期
论文作者：HU Jun-ping LI Ke-jun
文章页码：2578 - 2585
Key words：thermodynamics; hydraulic system; pseudo-bond graph; piston pump; modeling; temperature simulation
Abstract: To increase the efficiency and reliability of the thermodynamics analysis of the hydraulic system, the method based on pseudo-bond graph is introduced. According to the working mechanism of hydraulic components, they can be separated into two categories: capacitive components and resistive components. Then, the thermal-hydraulic pseudo-bond graphs of capacitive C element and resistance R element were developed, based on the conservation of mass and energy. Subsequently, the connection rule for the pseudo-bond graph elements and the method to construct the complete thermal-hydraulic system model were proposed. On the basis of heat transfer analysis of a typical hydraulic circuit containing a piston pump, the lumped parameter mathematical model of the system was given. The good agreement between the simulation results and experimental data demonstrates the validity of the modeling method.
HU Jun-ping(胡均平), LI Ke-jun(李科军)
(College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China)
Abstract:To increase the efficiency and reliability of the thermodynamics analysis of the hydraulic system, the method based on pseudo-bond graph is introduced. According to the working mechanism of hydraulic components, they can be separated into two categories: capacitive components and resistive components. Then, the thermal-hydraulic pseudo-bond graphs of capacitive C element and resistance R element were developed, based on the conservation of mass and energy. Subsequently, the connection rule for the pseudo-bond graph elements and the method to construct the complete thermal-hydraulic system model were proposed. On the basis of heat transfer analysis of a typical hydraulic circuit containing a piston pump, the lumped parameter mathematical model of the system was given. The good agreement between the simulation results and experimental data demonstrates the validity of the modeling method.
Key words:thermodynamics; hydraulic system; pseudo-bond graph; piston pump; modeling; temperature simulation
