State Space Wavelet Network is a specific neural network with non trivial structure. Such a structure implies problems with the network training. In SSWN, during the training process, weights and wavelons parameters a...
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Because of variable delays and stochastic data packets loss networked control systems require suitable algorithms to ensure stability of the control system and guarantee desired control performance. This paper present...
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This paper deals with the optimisation of control structures for multivariable process control systems. Incremental optimisation of control structures is the task of improving the performance of an existing control st...
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ISBN:
(纸本)9781424414970;1424414970
This paper deals with the optimisation of control structures for multivariable process control systems. Incremental optimisation of control structures is the task of improving the performance of an existing control structure by incrementally introducing or removing dynamic connections in the control structure. A preliminary method for the detection of an improving structural change in an existing control structure is presented. The method is applied to the control of a pulverized coal injection process to show its validity and has proven to give good results.
The design of interval observer for estimation of unmeasured state variables for application to drinking water distribution systems is described in this paper. In particular, it considers the design of such observer f...
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In the paper the method of automated cells tracking in the sequence of images is presented. The method starts with a sequence of images processing by the use of an adaptive threshold operator. Then the cells are detec...
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Advanced design aims to achieve the best possible performance subject to operational constraints. Such questions can be formulated as optimization problems. The advantages of using an explicit optimization formulation...
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Advanced design aims to achieve the best possible performance subject to operational constraints. Such questions can be formulated as optimization problems. The advantages of using an explicit optimization formulation include clear articulation of performance trade-offs and the provision of a clear basis for quantitative comparison of different strategies. In this paper we will briefly review aspects of modern optimization. We will also show how these tools can be deployed in scheduling, estimation and control. We will illustrate the ideas by examples drawn from the mining, mineral and metal processing field.
Respiration rate is very important parameter for biological processes in wastewater treatment plant {WWTP). The sequential algorithm for estimate the respiration rate is proposed and investigated. The Kaiman filters (...
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作者：
Jimshone LiJason Sheng-Hong TsaiLeang-San ShiehControl System Laboratory
Department of Electrical Engineering National Cheng Kung University Tainan 701 Taiwan R.O.C. Jim-Shone Li was born in Taiwan
R. O.C. on April 20 1967. He received B.S. and M.S. degrees in Electrical Engineering from the Chung-Cheng Institute of Technology Taoyuan Taiwan R.O.C. in 1989 and 1993 respectively. He is currently a Ph.D. student at National Cheng-Kung University Tainan Taiwan R.O.C. His research interests include analysis and design of multidimensional systems and nonlinear system control. Department of Electrical and Computer Engineering
University of Houston Houston TX 77004-4793 U.S.A.
An optimal control method for two-dimensional (2-D) linear systems with variable coefficients and free boundary conditions in Roesser's model is proposed in this paper. Based on Roesser's model, an equivalent ...
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An optimal control method for two-dimensional (2-D) linear systems with variable coefficients and free boundary conditions in Roesser's model is proposed in this paper. Based on Roesser's model, an equivalent general 1-D model of the 2-D system is presented, and the problem of minimizing a 2-D linear quadratic (LQ) cost function is solved for the case where complete state information is available. The solution is obtained by using the proposed dynamic programming in 1-D descriptor form to solve the Riccati equation and then arriving at the optimal control law and minimum cost. The proposed control methodology can be applied to discrete-time models of systems described by partial differential equations and can also be used in the field of signal processing.
Active filters are used to eliminate current harmonics near nonlinear loads. This paper presents a new method for the evaluation of the current that should be injected by the active filter in order to eliminate harmon...
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ISBN:
(纸本)142440813X
Active filters are used to eliminate current harmonics near nonlinear loads. This paper presents a new method for the evaluation of the current that should be injected by the active filter in order to eliminate harmonics. The method proposed is based on the Synchronous Reference Frame method and explores the fact that the performance of the active filter depends on the speed of the system that determines the rotating reference frame, but doesn't depend on its position. Compared with other methods, this method presents some advantages, due to its simplicity and its rudeness to perturbations on the ac network. Normally active filters have poor performances under non symmetrical and non-sinusoidal voltage conditions. The method proposed in this paper presents good response in presence of harmonics on the ac mains voltages and in presence of imbalance.
Aeration is an important and expensive activity that is carried out during wastewater treatment plant (WWTP) operation. The aeration system serves as the actuator to deliver the airflow prescribed by the dissolved oxy...
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