Stabilization control of a flexible marine riser with failed and bounded actuator and time‐varying boundary constraints

2021 ◽  
Author(s):  
Zhiji Han ◽  
Zhijie Liu ◽  
Xiuyu He
Keyword(s):  
Time Varying ◽  
Marine Riser ◽  
Boundary Constraints ◽  
Stabilization Control

Boundary Control of a Marine Riser Pipe Conveying Fluid

2014 ◽  
Author(s):  
M. A. Nojoumian ◽  
M. Jahromi Shirazi ◽  
H. Salarieh
Keyword(s):  
Boundary Control ◽  
Control Law ◽  
Time Varying ◽  
Pipe Conveying Fluid ◽  
Marine Riser ◽  
Marine Risers ◽  
System Parameters ◽  
Riser Pipe ◽  
The Stability ◽  
Conveying Fluid

In this paper, the model of pipe conveying fluid, like marine risers, is modeled with the effect of the interaction between the fluid and structure. A torque is assumed at one end of the pipe to control the vibration of the pipe. The stability of the pipe under time varying disturbance in forced vibration using boundary control law is proved. Exponential stability can be achieved under the free vibration condition. The proposed control law is simple and could be attained by some simple sensors at the end of the pipe. The control law is independent from system parameters so the controller is robust to disturbances and environmental conditions. The controller is obtained via a Lyapunov function in PDE form. Numerical simulations are used to verify the effectiveness of the proposed method.

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