Wyniki wyszukiwania - BazTech

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Metody diagnozowania linii abonenckich z wykorzystaniem robota pomiarowego

Wawrzyński W., Siergiejczyk M.

Diagnostyka

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2006

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nr 3(39)

87-94

PL

Robot pomiarowy jest elementem systemu diagnostyki central cyfrowych wspomagającym personel utrzymania w zakresie określenia aktualnego stanu badanych łączy i podejmowaniu decyzji o dalszych działaniach utrzymaniowych mających na celu zapewnienie ciągłości świadczenia usług telekomunikacyjnych. W referacie omówiono rolę i funkcjonalność urządzeń cyfrowej centrali DGT 3450 służących do wykonywania pomiarów linii abonenckich i międzycentralowych.. System komutacyjny DGT 3450 jest wyposażony w niezbędne funkcje eksploatacyjne i utrzymaniowe, zapewniające skuteczną i elastyczną realizację eksploatacji i utrzymania centrali w trybie obsługowym i bezobsługowym z i bez scentralizowanego systemu eksploatacji i utrzymania.

EN

Measuring robot is the element of diagnostic system of the digital telephone exchange supporting the maintenance staff in the domain of qualification of the current state of the examined junctions as well as in taking a decision concerning further maintenance activities eye assurance permanence of providing telecommunication services. In the paper there is presented the role and running of the devices of the digital exchange DGT 3450 used for realization of the subscriber's lines and between-exchanges measures. The commutation system of DGT 3450 is equipped into necessary exploitation and maintenance functions, assuring the efficient and elastic realization of the exchange exploitation and maintenance in the service and non-service manner with and without the centralized system of exploitation and maintenance.

2

Variational formalism applied to control of autonomous switching systems

Bagdouri M. E., Cebron B., Sechilariu M., Burger J.

Control and Cybernetics

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2004

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Vol. 33, no 4

535-549

EN

The formalism of the calculus of variations is applied to determine an optimal control of a class of Hybrid Dynamical Systems. This class consists of autonomous switching systems where jumps of the state are taken into account. It is shown that model switching involves discontinuities in the adjoint state of the system. The expression of the gradient of the cost function, with respect to the control, allows for the calculation of an optimal control by implementing a descent method. Au illustrative linear quadratic example is given, which allows to conclude that, the method can be easily implemented.

3

Wyznaczanie charakterystyk niezawodności wybranych elementów cyfrowych systemów komutacyjnych.

Siergiejczyk M.

Zagadnienia Eksploatacji Maszyn

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1998

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Vol. 33, nr 3

381-390

EN

Paper presents problems of reliability of the digital communication systems. To assure by the exchange the maintenance of calling in the optional moment of time there must be assured the high reliability level of its working. Requirements connected with the reliability of the telecommunication devices are much more stronger than for most of the computer systems. For realization of these requirements it is necessary to double at least the common exchange equipment with possibility to detect the damaged module in the calling disposing system and to change over the switching process to the serviceable module. In the paper there is presented the algorithm of determination of the chosen reliability characteristics for the two-processor system working in the configuration with cold reserve. At the end there is presented algorithm of determination of the availability factor, which is the fundamental measure of reliability estimation used in the evaluation of the communication systems.