Robust Control of Weight Compensation of the Sections of Spascraft on the Weightlessness Simulation Bench

2014 ◽  
Vol 666 ◽  
pp. 166-170
Author(s):  
Tatiana Al. Ezangina ◽  
Sergey An. Gayvoronskiy
Keyword(s):  
Maximum Degree ◽  
Test Bench ◽  
Digital Simulation ◽  
Robust Stabilization ◽  
Pi Controller ◽  
Parametric Synthesis ◽  
Degree Of Stability ◽  
Weightlessness Simulation ◽  
Weight Compensation ◽  
Coefficient Method

The structure of the robust stabilization system of cable tension for the test bench of weightlessness simulation was developed. The algorithm of a parametric synthesis of the robust PI controller based on the coefficient method and the criterion of maximum degree of stability was suggested. The operability of the synthesized robust system was confirmed by the results of digital simulation.

The Synthesis of the Robust Stabilization System of Cable Tension for the Test Bench of Weightlessness Simulation

2014 ◽  
Vol 1016 ◽  
pp. 394-399 ◽  
Author(s):  
Tatiana Al. Ezangina ◽  
Sergey An. Gayvoronskiy
Keyword(s):  
Test Bench ◽  
Digital Simulation ◽  
Robust Stabilization ◽  
Pi Controller ◽  
Stabilization System ◽  
Parametric Synthesis ◽  
Cable Tension ◽  
Degree Of Stability ◽  
Weightlessness Simulation ◽  
Coefficient Method

The structure of the robust stabilization system of cable tension for the test bench of weightlessness simulation was developed. The algorithm of a parametric synthesis of the robust PI–controller based on the coefficient method and the criterion of maximum degree of stability was suggested. The operability of the synthesized robust system was confirmed by the results of digital simulation.

Bundled Software for the Desing of Interval Dynamic Systems

2013 ◽  
Vol 446-447 ◽  
pp. 1217-1221 ◽  
Author(s):  
Tatiana Al. Ezangina ◽  
Sergey An. Gayvoronskiy
Keyword(s):  
Automatic Control ◽  
Dynamic Systems ◽  
Maximum Degree ◽  
Control Object ◽  
Quality Factors ◽  
Numerical Illustration ◽  
Linear Controller ◽  
Degree Of Stability ◽  
Coefficient Method

The article considers the system of an automatic control, that includes a linear controller and an interval control object. Using the coefficient estimations of quality factors the methodology of analysis of robust quality coefficients is developed that ensures maximum degree of stability and allowable system accuracy. The coefficient method of analysis of quality factors constitutes the basis of the method. On the basis of the obtained methods the bundled software RASILS is developed. A numerical illustration is presented in this paper.

The Control of the Descent Submersible in the Confused Sea Environment

2014 ◽  
Vol 536-537 ◽  
pp. 1200-1206 ◽  
Author(s):  
Tatiana Al. Ezangina ◽  
Sergey An. Gayvoronskiy
Keyword(s):  
Control System ◽  
Dynamic Properties ◽  
Digital Simulation ◽  
Control Loop ◽  
Parametric Synthesis ◽  
Integral Action ◽  
Quality Rating ◽  
Coefficient Method

To damp the vertical oscillations of the descent submersible caused by dusting the control system utilizing a shock-absorbing hoist located on the submersible was developed. The robust proportional-plus-integral action controller was included in the control loop to ensure the acceptable dynamic properties of the system by the interval variations of the module mass and the rope length. The parametric synthesis of the controller was carried out on the basis of the robust expansion of the coefficient method of the quality rating estimation. The system operability was confirmed by the results of the digital simulation.

Robust Fractional Order Proportional, Integral and Derivative Stabilizer for Power Systems

2016 ◽  
Vol 1 (1) ◽  
pp. 38 ◽  
Author(s):  
Magdy A.S. Aboelela ◽  
Hisham M. Soliman
Keyword(s):  
Genetic Algorithm ◽  
Fractional Calculus ◽  
Power Systems ◽  
Fractional Order ◽  
Single Machine ◽  
Robust Stabilization ◽  
Degree Of Stability ◽  
Single Machine Infinite Bus ◽  
Fractional Order Pid ◽  
Lower Limits

This paper focuses on the application of a robust Fractional Order PID (FOPID) stabilizer tuned by Genetic Algorithm (GA). The system’s robustness is assured through the application of Kharitonov’s theorem to overcome the effect of system parameter’s changes within upper and lower limits. The FOPID stabilizer has been approximated during the optimization using the Oustaloup’s approximation for fractional calculus and using the “nipid” toolbox of Matlab during simulation. The objective is to keep robust stabilization with maximum achievable degree of stability against system's uncertainty. This optimization will be achieved with the proper choice of the FOPID stabilizer’s parameters (kp, ki, kd, l, and d) as discussed later in this article. The optimization has been done using the GA which limits the boundaries of the tuned parameters within the permissible region. The calculations have been applied to a single machine infinite bus (SMIB)power system using Matlab and Simulink. The results show superior behavior of the proposed stabilizer over the traditional PID.

scholarly journals Robust Stabilization via Super-Stable Systems Techniques

Mathematics ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 98
Author(s):  
Svetlana A. Krasnova ◽  
Yulia G. Kokunko ◽  
Victor A. Utkin ◽  
Anton V. Utkin
Keyword(s):  
Direct Method ◽  
Robust Stabilization ◽  
Control Plant ◽  
Parametric Uncertainty ◽  
Parametric Uncertainties ◽  
Regular Form ◽  
The Matrix ◽  
Degree Of Stability ◽  
Control Procedures ◽  
Robust Systems

In this paper, we propose a direct method for the synthesis of robust systems operating under parametric uncertainty of the control plant model. The developed robust control procedures are based on the assumption that the structural properties of the nominal system are conservated over the entire range of parameter changes. The invariant-to-parametric-uncertainties transformation of the initial model to a regular form makes it possible to use the concept of super-stable systems for the synthesis of a stabilizing feedback. It is essential that the synthesis of super-stable systems is carried out not on the basis of assigning eigenvalues to the matrix of the close-loop system, but in terms of its elements. The proposed approach is applicable to a wide class of linear systems with parametric uncertainties and provides a given degree of stability.

scholarly journals Water distribution from medium-size sprinkler in solid set sprinkler systems

2016 ◽  
Vol 20 (3) ◽  
pp. 195-201
Author(s):  
Giuliani do Prado
Keyword(s):  
Clustering Analysis ◽  
Water Distribution ◽  
Test Bench ◽  
Digital Simulation ◽  
Medium Size ◽  
State University ◽  
Geometric Shapes ◽  
Sprinkler Systems ◽  
Visual Basic For Applications ◽  
Distribution Uniformity

ABSTRACT The study aimed to evaluate the water distribution from a medium-size sprinkler working in solid set sprinkler systems. Water distribution radial curves from the sprinkler operating under four nozzle diameter combinations (4.0 x 4.6; 5.0 x 4.6; 6.2 x 4.6 and; 7.1 x 4.6 mm) and four working pressures (196; 245; 294 and 343 kPa) were evaluated on the sprinkler test bench of the State University of Maringá, in Cidade Gaúcha, Paraná, Brazil. The sixteen water distribution curves were normalized and subjected to clustering analysis (K-Means algorithm), identifying the occurrence of normalized distribution curves with three different geometric shapes. A computer algorithm, in Visual Basic for Applications in Excel spreadsheet, was developed to simulate the water application uniformity (Christiansen's Coefficient - CU) from the sprinklers working with rectangular and triangular layouts in solid set sprinkler systems. For the three geometric shapes of the normalized water distribution curves, digital simulation results of water distribution uniformity for the sprinklers on mainline and lateral line spaced between 10 to 100% of wetted diameter indicated that sprinkler spacings around 50% of the wetted diameter provide acceptable CU values.

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