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Frequency-Shaped and Observer-Based Discrete-time Sliding Mode Control - BIJNAN BANDYOPADHYAY - AXAYKUMAR MEHTA

Frequency-Shaped and Observer-Based Discrete-time Sliding Mode Control

Titre de l'éditeur : Frequency-Shaped and Observer-Based Discrete-time Sliding Mode C

BIJNAN BANDYOPADHYAY
AXAYKUMAR MEHTA

 
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EN SAVOIR PLUS Résumé

It is well established that the sliding mode control strategy provides an effective and robust method of controlling the deterministic system due to its well-known invariance property to a class of bounded disturbance and parameter variations. Advances in microcomputer technologies have made digital control increasingly popular among the researchers worldwide. And that led to the study of discrete-time sliding mode control design and its implementation. This brief presents, a method for multi-rate frequency shaped sliding mode controller design based on switching and non-switching type of reaching law. In this approach, the frequency dependent compensator dynamics are introduced through a frequency-shaped sliding surface by assigning frequency dependent weighing matrices in a linear quadratic regulator (LQR) design procedure. In this way, the undesired high frequency dynamics or certain frequency disturbance can be eliminated. The states are implicitly obtained by measuring the output at a faster rate than the control. It is also known that the vibration control of smart structure is a challenging problem as it has several vibratory modes. So, the frequency shaping approach is used to suppress the frequency dynamics excited during sliding mode in smart structure. The frequency content of the optimal sliding mode is shaped by using a frequency dependent compensator, such that a higher gain can be obtained at the resonance frequencies. The brief discusses the design methods of the controllers based on the proposed approach for the vibration suppression of the intelligent structure. The brief also presents a design of discrete-time reduced order observer using the duality to discrete-time sliding surface design. First, the duality between the coef?cients of the discrete-time reduced order observer and the sliding surface design is established and then, the design method for the observer using Riccati equation is explained. Using the proposed method, the observer for the Power System Stabilizer (PSS) for Single Machine In?nite Bus (SMIB) system is designed and the simulation is carried out using the observed states. The discrete-time sliding mode controller based on the proposed reduced order observer design method is also obtained for a laboratory experimental servo system and veri?ed with the experimental results.

Détails
Prix : 91,93 $
Catégorie :
Auteur :  BIJNAN BANDYOPADHYAY
AXAYKUMAR MEHTA
Titre : Frequency-Shaped and Observer-Based Discrete-time Sliding Mode Control
Date de parution : janvier 2015
Éditeur : LIVRES NUMÉRIQUES DIVERS
Sujet : NUL DIVERS
ISBN : 9788132222385 (8132222385)
Référence Renaud-Bray : 3063513
No de produit : 3063513
Droits numériques
Format : EPUB
Disponibilité : Canada, consultez la liste des pays autorisés.
Gestion des droits numériques : Adobe DRM
Entrepôt numérique : NUMILOG
Nombre d'appareils autorisés : 3
Nombre de copier/coller : 0
Impression : 0

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Frequency-Shaped and Observer-Based Discrete-time Sliding Mode Control , BANDYOPADHYAY , BIJNAN*MEHTA , AXAYKUMAR
© LIVRES NUMÉRIQUES DIVERS 2015