Temat: dead-beat - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Experimental verification of Dead-Beat predictive current controller for small power, low speed PMSM
Autorzy:: Pałka, R.
Piotuch, R.
Tematy:: current controller
PM motors
dead-beat
FEM
efficiency map; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/141182.pdf Link otwiera się w nowym oknie
Opis:: This paper presents simulation and experimental results obtained with a Dead- Beat predictive current controller for a Permanent Magnet Synchronous Machine (PMSM) drive system. With means of combined field and circuit simulations, an efficiency map and required current in a direct- and quadrature-axis are defined. A control algorithm was implemented within an open-interface inverter from Texas Instruments. Dynamic response for both axis currents was defined and verified as well as current ripples for different set currents in the quadrature axis.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Control error dynamic modification as an efficient tool for reduction of effects introduced by actuator constraints
Autorzy:: Janiszowski, K. B.
Tematy:: sterowanie cyfrowe
regulacja PID
wind-up
actuator constraints
digital dead-beat control
PID control
rate constraints
state-space control
saturations at control; Pokaż więcej
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Powiązania:: https://bibliotekanauki.pl/articles/907663.pdf Link otwiera się w nowym oknie
Opis:: A modification of digital controller algorithms, based on the introduction of a virtual reference value, which never exceeds active constraints in the actuator output is presented and investigated for some algorithms used in single-loop control systems. This idea, derived from virtual modification of a control error, can be used in digital control systems subjected to both magnitude and rate constraints. The modification is introduced in the form of on-line adaptation to the control task. Hence the design of optimal (in a specified sense) digital controller parameters can be separated from actuator constraints. The adaptation of the control algorithm (to actuator constraints) is performed by the transformation of the control error and is equivalent to the introduction of a new, virtual reference value for the control system. An application of this approach is presented through examples of three digital control algorithms: the PID algorithm, the dead-beat controller and the state space controller. In all cases, clear advantages of transients are observed, which yields some general conclusions to the problem of processing actuator constraints in control.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Synchronization of fractional-order discrete-time chaotic systems by an exact delayed state reconstructor: Application to secure communication
Autorzy:: Djennoune, Said
Bettayeb, Maamar
Al-Saggaf, Ubaid Muhsen
Tematy:: fractional order
discrete time system
chaotic map
chaotic synchronization
dead-beat observer
secure data communication
rząd ułamkowy
układ dyskretny
synchronizacja chaosu
komunikacja bezpieczna; Pokaż więcej
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Powiązania:: https://bibliotekanauki.pl/articles/329964.pdf Link otwiera się w nowym oknie
Opis:: This paper deals with the synchronization of fractional-order chaotic discrete-time systems. First, some new concepts regarding the output-memory observability of non-linear fractional-order discrete-time systems are developed. A rank criterion for output-memory observability is derived. Second, a dead-beat observer which recovers exactly the true state system from the knowledge of a finite number of delayed inputs and delayed outputs is proposed. The case of the presence of an unknown input is also studied. Third, secure data communication based on a generalized fractional-order Hénon map is proposed. Numerical simulations and application to secure speech communication are presented to show the efficiency of the proposed approach.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: A general unified approach to chaos synchronization in continuous-time systems (with or without equilibrium points) as well as in discrete-time systems
Autorzy:: Grassi, G
Ouannas, A.
Pham, V.-T.
Tematy:: chaos synchronization and control
scalar synchronizing signal
continuous-time system (with or without equilibrium points)
discrete-time systems
observer-based synchronization
dead beat control
synchronization in finite time; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/949795.pdf Link otwiera się w nowym oknie
Opis:: By analyzing the issue of chaos synchronization, it can be noticed the lack of a general approach, which would enable any type of synchronization to be achieved. Similarly, there is the lack of a unified method for synchronizing both continuous-time and discrete-time systems via a scalar signal. This paper aims to bridge all these gaps by presenting a novel general unified framework to synchronize chaotic (hyperchaotic) systems via a scalar signal. By exploiting nonlinear observer design, the approach enables any type of synchronization defined to date to be achieved for both continuous-time and discrete-time systems. Referring to discrete-time systems, the method assures any type of dead beat synchronization (i.e., exact synchronization in finite time), thus providing additional value to the conceived framework. Finally, the topic of synchronizing special type of systems, such as those characterized by the absence of equilibrium points, is also discussed.
Dostawca treści:: Biblioteka Nauki

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