期刊名称：International Journal of Energy and Environment
印刷版ISSN：2076-2895
电子版ISSN：2076-2909
出版年度：2019
卷号：10
期号：6
页码：1-16
出版社：International Energy and Environment Foundation (IEEF)
摘要：The problem of vibrations cause the collapse of the systems and cause significant economic losses if not
avoided. For this reason, the researchers have dealt with this issue in all years, but the problem is not over.
In this paper will highlight the problem of controlling the vibrations resulting from fluid flow inside the
pipes, in addition to the study of reducing the vibrations of these pipes. The ideal control is designed based
on, the state space theory and according to the linear behavior of time, because the stability of the pipes
are found from linear change. Different factors were studied on the controller's performance and then the
optimal factors were obtained to obtain the best performance. The research included the study of the
response and the natural frequency and the study of the dynamic behavior of different types of stabilization
of the pipes in the presence with no hydraulic damping (active control) and monitoring the response and
stability of each case of stabilization. Where, the control investigation include using the analytical solution
of general equation of motion for pipe by using state space technique. There, the parameters studied for
active control pipe vibration included the effect of hydraulic damper position, base width of hydraulic
damper, damping, and the flow Pressure, on the pipe vibration response, with various pipe boundary
conditions supported.
关键词：Active vibration control analysis; Pipe conveying fluid; State space method; Phase plane;
linear time invariant; Multiple input; Multiple output systems;
