The strip temperature dynamics of the heating furnace of the continuous galvenizing line (CGL) consists of dead time and time lag against the change of various plant variables. The exact identification of these charac...
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The strip temperature dynamics of the heating furnace of the continuous galvenizing line (CGL) consists of dead time and time lag against the change of various plant variables. The exact identification of these characteristics is difficult because the dynamics is time-varying depending upon the operational conditions and long-term shifts of plant characteristics. In view of these facts, the author applied the self-tuning generalized predictive control to the strip temperature control of the heating furnace, obtained fine control performance, and established a new strip temperature control for the heating furnace of CGL or CAPL (continuous annealing and processing line). This control has been successfully applied at the No.5CGL of Nagoya Works of Nippon Steel Corporation since June 1990 and the basic principle of the control has been transferred to the No.2CAPL of Nagoya Works and the No.2CAPL of Kimitsu Works.< >
作者：
S.V. GaikwadD.E. RiveraDepartment of Chemical
Bio and Materials Engineering and Control Systems Engineering Laboratory Computer-Integrated Manufacturing Systems Research Center Arizona State University Tempe AZ USA
control-ID is a computer aided controlengineering (CACE) tool serving as a support environment for computer aided control system design (CACSD) in the chemical process industry. The fundamental basis for this tool is...
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control-ID is a computer aided controlengineering (CACE) tool serving as a support environment for computer aided control system design (CACSD) in the chemical process industry. The fundamental basis for this tool is the theory of control-relevant system identification, which takes advantage of the interplay between identification and control design. control-ID is implemented using MATLAB on a VAXStation 4000 cluster, which is integrated in real-time to an industrial-scale Honeywell TDC 3000 plant information and control system. control action is computed on the TDC 3000 system using low-order difference equations, which yield superior performance over traditional PID control while resembling the behavior of model predictive controlsystems. Results from a simulation study using a gas/oil furnace are reported.< >
An intelligent and robust voting service for real-time distributed controlsystems is proposed. Three novel features of the voter are described. Firstly, the voter is distributed using a primary site algorithm. This a...
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We introduce a new model of fuzzy pattern recognition where data available about class membership are given implicitly rather than explicitly. While the explicit classification training set conveys complete details ab...
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We introduce a new model of fuzzy pattern recognition where data available about class membership are given implicitly rather than explicitly. While the explicit classification training set conveys complete details about class membership, the implicit format of classification lends itself to more synthetic forms of classification outcomes (such as those expressed in terms of similarities between some pairs of patterns). The relevant architectures are proposed along with the pertinent learning schemes.< >
This paper presents experimental results on empirical nonlinear models (of the Hammerstein type) for a reactive ion etcher. A nonlinear tracking controller design based on the nonlinear model was implemented. Experime...
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This paper presents experimental results on empirical nonlinear models (of the Hammerstein type) for a reactive ion etcher. A nonlinear tracking controller design based on the nonlinear model was implemented. Experimental data on the performance of the control system is also included.
In this paper a fast spatial adaptive algorithm is presented for the efficient least squares (LS), autoregressive exogenous (ARX), two-dimensional (2-D) modeling. Filter masks of general boundaries are allowed. Effici...
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In this paper a fast spatial adaptive algorithm is presented for the efficient least squares (LS), autoregressive exogenous (ARX), two-dimensional (2-D) modeling. Filter masks of general boundaries are allowed. Efficient space updating recursions are developed by exploiting the spatial shift invariance property of the 2-D data set.< >
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.< >
Considers nonlinear systems with stable linear unmodeled dynamics at the input. First the authors illustrate the main instability mechanisms on an example. Then the authors propose a dynamic feedback design which guar...
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Considers nonlinear systems with stable linear unmodeled dynamics at the input. First the authors illustrate the main instability mechanisms on an example. Then the authors propose a dynamic feedback design which guarantees global boundedness in the presence of input unmodeled dynamics. The authors apply this design to feedback linearizable systems, for which global asymptotic stability is also achieved.< >
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