MULTIPLE MODEL ADAPTIVE CONTROL DESIGN A COMPUTER ALGEBRA APPROACH
Published In: 3RD INTERNATIONAL CONFERENCE ON ADVANCES IN MECHANICAL AND AUTOMATION ENGINEERING
Author(s): AGHIL SHAVALIPOUR , SALLEHUDDIN MOHAMED HARIS , YUZITA YAACOB, , ZULKIFLI MOHD NOPIAH
Abstract: The multiple model adaptive control (MMAC) method potentially has the ability of providing excellent control performance over a wide range of parameter variations. A key part in the design of a MMAC system is the choice of candidate models. In this work, a method to optimally determine these candidate models is proposed. The method exploits the relationship between Grobner bases and polynomial spectral factorization through the notion of sum of roots. Using computer algebra techniques, the symbolic solution to the Algebraic Riccati Equation, and hence the H2 optimal control problem, can be obtained. The symbolic solution gives the relationship between the optimal controller gains and the uncertain parameters. Hence, the candidate controllers in the MMAC system could be selected based on this relationship to best counter the parameter variations. To illustrate the effectiveness of the proposed method, a case study of a MMAC implementation on a quarter car active suspension with varying
- Publication Date: 11-Dec-2015
- DOI: 10.15224/978-1-63248-080-4-114
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MEASUREMENT OF CURRENT DUE TO SPACE CHARGE PRESENT IN PVC SHEATHS AFTER AGING UNDER AC SINUSOIDAL HIGH VOLTAGE BY THE THERMAL WAVE METHOD
Published In: 3RD INTERNATIONAL CONFERENCE ON ADVANCES IN MECHANICAL AND AUTOMATION ENGINEERING
Author(s): ABDELKRIM LAIFAOUI , HAKIM AIT SAID , JEAN MICHEL REBOUL , YOUCEF ZEBBOUDJ
Abstract: Several techniques exist to characterize the presence of remanent polarization and / or space charge in an insulating material. Among them which may be mentioned thermal methods such as the Thermal Wave Method (TWM). Among the most widely used polymers in electrical insulation, we find the polychloride vinyl (PVC). In this work, we describe the characterization of PVC sheaths to improving the reliability of power transmission cables. We set the objective to adapt the TWM for space charges measures in this material and under this cylindrical form. The study concerns a few samples of PVC sheaths, part of which has undergone aging until 4250h under alternating voltage of 20 kV sinusoidal AC voltage in the electrical engineering laboratory of Bejaia (LGEB). Also we have another lot of samples in new condition for comparison. The space charge measurements were made at LUSAC in Cherbourg. After presenting the specific banc measurement of MOT for this type of samples, we present the first cur
- Publication Date: 11-Dec-2015
- DOI: 10.15224/978-1-63248-080-4-115
- Views: 0
- Downloads: 0