In this paper a novel algorithm is presented for the efficient two-dimensional (2-D) symmetric noncausal finite impulse response (FIR) filtering and autoregressive (AR) modeling. Symmetric filter masks of general boun...
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In this paper a novel algorithm is presented for the efficient two-dimensional (2-D) symmetric noncausal finite impulse response (FIR) filtering and autoregressive (AR) modeling. Symmetric filter masks of general boundaries are allowed. The proposed algorithm offers the greatest maneuverability in the 2-D index space in a computational efficient way. This flexibility can be taken into advantage if the shape of the 2-D mask is not a priori known and has to be dynamically configured.< >
The problem of modeling dynamic systems using fuzzy relational systems is investigated. A dynamic system is modeled using a static fuzzy relational system where the dynamics is brought into the model by tapped delay l...
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The problem of modeling dynamic systems using fuzzy relational systems is investigated. A dynamic system is modeled using a static fuzzy relational system where the dynamics is brought into the model by tapped delay lines. Both the internal and the external feedback topology are relayed. It is shown that in the limit the internal feedback topology can generate a null linguistic representation of the state in the absence of normal fuzzy sets at the inputs of the static model. For handling this several schemes are considered, namely it is advocated the use of pretuned fuzzy model I/O interfaces as regenerative devices. A case study is presented.< >
This paper explores an inherent feedback limitation of using decentralized LTI control on a two-input, two-output LTI plant. The result is motivated by, and illustrated on, a reactive ion etcher.
This paper explores an inherent feedback limitation of using decentralized LTI control on a two-input, two-output LTI plant. The result is motivated by, and illustrated on, a reactive ion etcher.< >
In mobile radio networks, receiver capture is known to enhance the performance of the slotted ALOHA random access protocol substantially. The efficiency of narrowband slotted ALOHA radio networks can be further enhanc...
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In mobile radio networks, receiver capture is known to enhance the performance of the slotted ALOHA random access protocol substantially. The efficiency of narrowband slotted ALOHA radio networks can be further enhanced by using sector antennas. The paper investigates the effect of partially overlapping, realistic antenna patterns which gives highly correlated received power levels at different receiver branches. The author proposes a method for computing the joint throughput from two base station antennas. The a posteriori information provided by the event of one message capturing one antenna is used to find conditional probabilities of capturing the other antennas. Any overlap in the antenna patterns decreases the throughput, but transmissions from the overlap area face a larger probability of capture than signals from directions in which only one antenna has significant gain.
Al planning systems must be able to update their internal model of the domain in order to determine the effects of a possible action. The most widely used update method is the STRIPS operator. STRIPS operators are ext...
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A two-stage multiuser detector for the code division multiple access environment employing a combination of a decorrelator and a nonlinear multiuser interference canceler is considered. The weights of the canceler are...
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A graph-theoretic method for integration of process and control system (IPCS) syntheses has been proposed in the present paper. The foundation of this integration is a well-established, graph-theoretic approach to pro...
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A graph-theoretic method for integration of process and control system (IPCS) syntheses has been proposed in the present paper. The foundation of this integration is a well-established, graph-theoretic approach to process synthesis in conjunction with the analysis of structural controllability based on digraph-type process models. A directed bipartite graph, the CP-graph, has been introduced for unambiguous representation of an IPCS structure. The notion of CP-graph has given rise to a set of axioms for describing the combinatorially feasible and controllable structures. The maximal controllable structure of an IPCS synthesis problem has been defined as the union of combinatorially feasible and controllable IPCS structures; obviously, the optimal IPCS structure must be a substructure of this maximal controllable structure. Thus, the mathematical programming model, e.g., MINLP model, of an IPCS synthesis problem should be derived from the maximal controllable structure. The fundamental combinatorial algorithm of IPCS synthesis, i.e., algorithm CMSG, for identifying this maximal controllable structure has been formulated. The complexity of this algorithm has been proved to be polynomial on the size of the problem; its efficacy is illustrated with a relatively simple example. The resultant IPCS structures are compared with the structures synthesized without considering their controlsystems.
In this paper we discuss pattern generations and switching for robot manipulators to perform tasks under qualitative changes of the dynamic environment. The approach is to compose continuous type artificial neural ele...
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In this paper we discuss pattern generations and switching for robot manipulators to perform tasks under qualitative changes of the dynamic environment. The approach is to compose continuous type artificial neural elements as an oscillator based on mutual entrainment and generate trajectories for the manipulators. Using the neural oscillator, juggling control of manipulators is considered as a concrete task, and a method to alternate patterns of the trajectories according to the change of the desired value and environment is proposed. Some numerical examples show the efficiency of the proposed method.< >
H/sub /spl infin// and robust estimation methods are discussed from a deterministic as well as a stochastic point of view. The relationship between H/sub /spl infin// and risk sensitivity for systems with known plant ...
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H/sub /spl infin// and robust estimation methods are discussed from a deterministic as well as a stochastic point of view. The relationship between H/sub /spl infin// and risk sensitivity for systems with known plant dynamics is reviewed. This relationship is extended to the more general case of estimators that are robust to noise and plant model uncertainties. Specifically, it is shown that a stochastic equivalent to the robust H/sub /spl infin// estimator exists. An example is used to compare the estimators in the deterministic sense, using the frequency response of the transfer function between the inputs and the error, as well as in the stochastic sense, using the probability density function of the output error residual.< >
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