Studying the coupled eigenoscillations of an axisymmetric tower-elevated tank system by the multimodal method

2013 ◽  
Vol 42 ◽  
pp. 152-165 ◽  
Author(s):  
I. Gavrilyuk ◽  
M. Hermann ◽  
Yu. Trotsenko ◽  
A. Timokha
Keyword(s):  
Tank System ◽  
Multimodal Method

Multimodal method for linear liquid sloshing in a rigid tapered conical tank

2012 ◽  
Vol 29 (2) ◽  
pp. 198-220 ◽  
Author(s):  
Ivan Gavrilyuk ◽  
Marten Hermann ◽  
Ivan Lukovsky ◽  
Oleksandr Solodun ◽  
Alexander Timokha
Keyword(s):  
Liquid Sloshing ◽  
Multimodal Method

scholarly journals Design of Optimal PID Controller withɛ-Routh Stability for Different Processes

2013 ◽  
Vol 2013 ◽  
pp. 1-22 ◽  
Author(s):  
XianHong Li ◽  
HaiBin Yu ◽  
MingZhe Yuan
Keyword(s):  
Pid Controller ◽  
Design Method ◽  
Optimization Methods ◽  
Pid Controllers ◽  
Water Tank ◽  
Nonlinear Constraint ◽  
Order Error ◽  
Interior Method ◽  
Tank System ◽  
Tuning Methods

This paper presents a design method of the optimal proportional-integral-derivative (PID) controller withɛ-Routh stability for different processes through Lyapunov approach. The optimal PID controller could be acquired by minimizing an augmented integral squared error (AISE) performance index which contains control error and at least first-order error derivative, or even may containnth-order error derivative. The optimal control problem could be transformed into a nonlinear constraint optimization (NLCO) problem via Lyapunov theorems. Therefore, optimal PID controller could be obtained by solving NLCO problem through interior method or other optimization methods. The proposed method can be applied for different processes, and optimal PID controllers under various control weight matrices andɛ-Routh stability are presented for different processes. Control weight matrix andɛ-Routh stability’s effects on system performances are studied, and different tuning methods’ system performances are also discussed.ɛ-Routh stability’s effects on disturbance rejection ability are investigated, and different tuning methods’ disturbances rejection ability is studied. To further illustrate the proposed method, experimental results of coupled water tank system (CWTS) under different set points are presented. Both simulation results and experiment results show the effectiveness and usefulness of the proposed method.

Liquid Level Control of Four-Tank System Based on Active Disturbance Rejection Technology

Measurement ◽  
2021 ◽  
Vol 175 ◽  
pp. 109146
Author(s):  
Xiangxiang Meng ◽  
Haisheng Yu ◽  
Jie Zhang ◽  
Tao Xu ◽  
Herong Wu
Keyword(s):  
Disturbance Rejection ◽  
Liquid Level ◽  
Level Control ◽  
Active Disturbance Rejection ◽  
Tank System ◽  
Liquid Level Control

Robust Tracking Control for Takagi–Sugeno Fuzzy Systems With Unmeasurable Premise Variables: Application to Tank System

2014 ◽  
Vol 136 (4) ◽  
Author(s):  
H. Ghorbel ◽  
A. El Hajjaji ◽  
M. Souissi ◽  
M. Chaabane
Keyword(s):  
Tracking Control ◽  
Fuzzy Systems ◽  
Design Procedure ◽  
Control Design ◽  
Linear Matrix ◽  
Robust Tracking Control ◽  
Fuzzy Observer ◽  
Tank System ◽  
System States ◽  
Takagi Sugeno

In this paper, a robust fuzzy observer-based tracking controller for continuous-time nonlinear systems presented by Takagi–Sugeno (TS) models with unmeasurable premise variables, is synthesized. Using the H∞ norm and Lyapunov approach, the control design for TS fuzzy systems with both unmeasurable premises and system states is developed to guarantee tracking performance of closed loop systems. Sufficient relaxed conditions for synthesis of the fuzzy observer and the fuzzy control are driven in terms of linear matrix inequalities (LMIs) constraints. The proposed method allows simplifying the design procedure and gives the observer and controller gains in only one step. Numerical simulation on a two tank system is provided to illustrate the tracking control design procedure and to confirm the efficiency of the proposed method.

scholarly journals Actuator fault diagnosis for flat systems: A constraint satisfaction approach

2013 ◽  
Vol 23 (1) ◽  
pp. 171-181 ◽  
Author(s):  
Ramatou Seydou ◽  
Tarek Raissi ◽  
Ali Zolghadri ◽  
Denis Efimov
Keyword(s):  
Fault Detection And Isolation ◽  
System Model ◽  
Actuator Faults ◽  
Consistency Test ◽  
Output Vector ◽  
Flat Systems ◽  
Set Membership ◽  
Tank System ◽  
Derivatives Of ◽  
Estimator Design

This paper describes a robust set-membership-based Fault Detection and Isolation (FDI) technique for a particular class of nonlinear systems, the so-called flat systems. The proposed strategy consists in checking if the expected input value belongs to an estimated feasible set computed using the system model and the derivatives of the measured output vector. The output derivatives are computed using a numerical differentiator. The set-membership estimator design for the input vector takes into account the measurement noise thereby making the consistency test robust. The performances of the proposed strategy are illustrated through a three-tank system simulation affected by actuator faults.

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