讲座题目：Hydraulic System Dynamics and Control
讲座人：Petter Krus教授
Professor in Fluid and Mechatronic Systems (Flumes) at
时间：10月11日-10月19日，上午：8：30-12：00
讲座地点：浙江大学流体传动与控制国家重点实验室老楼4楼会议室
讲座语言：英语
讲座内容简介：
(Program may subject to change)
Tuesday Oct 11.
· System Simulation
o Bi-directional delay lines (transmission line modelling, TLM)
o Introduction to HOPSAN
Wednesday Oct 12.
· Servo technology
o Stability analysis, frequency analysis
o Non-linearities, dead band, saturation, friction
o PI-lead control
o Complex load dynamics
Thursday Oct 13.
· Transmission line dynamics
o Pressure transients
o Effect on system dynamics In servo systems
· Pressure Control Valves
o Pressure relief valves
Friday Oct 14.
· Pressure Control Pumps
o Constant pressure pumps, pressure relief valves
o System dynamics and stability analysis
o Effect of long transmission lines
· Exercise
o Making a simulation model of a model relevant to your research
Tuesday Oct 18.
· Load Sensing Systems
o System dynamics and stability analysis
Wednesday Oct 19.
· Systems with counter balance valves
o System dynamics and stability analysis
· System with separate meter-in and meter-out orifices
o Control strategies
Prof. Krus has a Phd in Fluid Power from
Hydraulic systems have high energy density and a high degree of control. However, for efficient design, it is important to have a good understanding of the dynamics of such systems. Furthermore, even though the dynamics of individual components can be fairly simple, systems may exhibit complex dynamics and in some cases even be unstable. In this course some of the more important systems, such as servo systems, load sensing systems etc, are studied both theoretically and maybe more importantly, through experimentation in simulation models. After the course it is expected that the students should be able to make simpler system simulation models, to be able to analyse the simulation results, and to draw conclusions on appropriate actions for improvements.
The course is based on lectures and computer exercises in the free software Hopsan-NG wich can be downloaded from. www.iei.liu.se/flumes. The hours indicated includes both lectures and exercises.
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