This paper is concerned with the problems of H-two filtering for discrete-time Markovian jump linear systems subject to logarithmic quantization. We assume that only the output of the system is available, and therefore the mode information is nonaccessible. In this paper, a mode-independent quantized H-two filter is designed such that filter error system is stochastically stable. To this end, sufficient conditions for the existence of an upper bound of H-two norm are presented in terms of linear matrix inequalities. Considering uncertainty of system matrices, a robust H-two filter is designed. The proposed method is also applicable to cover the case where the transition probability matrix is not exactly known but belongs to a given polytope. Finally, numerical examples are provided to demonstrate the effectiveness of the proposed approach.
We have been developing three-dimensional (3-D) packaging technology for forming through-type electrodes in chips that are then directly connected in stacks. The model examined in this study is defined by its simple structure. The structure was optimized for successful connection in a chip stack without degrading the features of the chips. The use of this structure enabled a stable and rigid connection, and a four-layer chip stack assembled on a ceramic substrate exhibited adequate thermal cycle performance. This paper discusses how the structure of terminals was optimized for chip stacking. A finished package assembled from static random access memory (SRAM) with through-type electrodes was confirmed to operate well and exhibit normal functioning.
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