The closed loop stability issue of finite precision realizations was investigated for digital controllers implemented in block floating point format. The controller coefficient perturbation was analyzed resulting from...
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The closed loop stability issue of finite precision realizations was investigated for digital controllers implemented in block floating point format. The controller coefficient perturbation was analyzed resulting from using finite word length (FWL) block floating point representation scheme. A block floating point FWL closed loop stability measure was derived which considers both the dynamic range and precision. To facilitate the design of optimal finite precision controller realizations, a computationally tractable block floating point FWL closed loop stability measure was then introduced and the method of computing the value of this measure for a given controller realization was developed. The optimal controller realization is defined as the solution that maximizes the corresponding measure, and a numerical optimization approach was adopted to solve the resulting optimal realization problem. A numerical example was used to illustrate the design procedure and to compare the optimal controller realization with the initial realization.
The article deals with the choice of criteria for efficiency, applicability in measuring technology, analytical and construction, on the basis of which a methodology for assessing the quality of structures of measurin...
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In this work the normality property of specification languages for discrete-event systems under partial observation is investigated in a modular context for large-scale systems-modelling. This is related to work on co...
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This paper considers the time consistency of multistage cooperative games in which there are multiple optimal trajectories with complete information. In dynamic cooperative games, an important condition for the distri...
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The paper describes the design conception of an industrial multiloop adaptive regulator and the practical approach of the implementation of a highly reliable adaptive control strategy.
The paper describes the design conception of an industrial multiloop adaptive regulator and the practical approach of the implementation of a highly reliable adaptive control strategy.
This paper presents an approach to sensor-based obstacle modeling in a configuration space for manipulator motion planning in unknown environments. In order to achieve this objective, an efficient algorithm is used to...
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The authors present a program packaqe prepared for a personal computer of 64 kbytes. The program package is suitable for processing of measurement data, identification of control systems, design of controllers and sim...
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The authors present a program packaqe prepared for a personal computer of 64 kbytes. The program package is suitable for processing of measurement data, identification of control systems, design of controllers and simulation. The console communication is interactive and plotting is graphic on both the screen and the printer. Time series data are stored in files and the appropriate programs write in and read from the files. The operation of the programs is illustrated by examples.
A new algorithm for segmenting and tracking deformable (shape-changing) linear (thin and long with negligible diameter) objects in video images is presented. The core of algorithm is to detect the two boundary curves ...
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ISBN:
(纸本)0769507506
A new algorithm for segmenting and tracking deformable (shape-changing) linear (thin and long with negligible diameter) objects in video images is presented. The core of algorithm is to detect the two boundary curves of a deformable linear object within adaptive tracking windows. The boundaries are found by analyzing the gray value gradients within the tracking windows. The algorithm allows moderate changes in the image brightness by introducing tolerance parameters to the algorithm. It also provides a robust tracking of the shape- and width-changing object by using a fuzzy estimation of the object's membership function at the tracked points. The result describes the shape of the object and is used to define features for shape change detection.
Although the recently developed reduced instruction set computer (RISC) architecture has proven to offer impressive performance in general applications, it has its drawbacks in the field of multitasking real-time envi...
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Although the recently developed reduced instruction set computer (RISC) architecture has proven to offer impressive performance in general applications, it has its drawbacks in the field of multitasking real-time environments. The difficulties are mainly related to the large number of processor registers which must be saved and restored on every context switch. On the other hand, since this large number of registers accounts for most of the performance benefits, a concept had to be developed which preserves the advantages of the RISC architecture and provides for the necessary real-time capabilities. This paper describes a solution in which additional hardware performs a part of the save/restore task associated with every context switch. This approach yields a RISC architecture suited for the requirements of a modern processcontrol system. Subject area. 4.1 Digital computercontrol Systems
A new algorithm for segmenting and tracking deformable (shape-changing) linear (thin and long with negligible diameter) objects in video images is presented. The core of the algorithm is to detect the two boundary cur...
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ISBN:
(纸本)0780362977
A new algorithm for segmenting and tracking deformable (shape-changing) linear (thin and long with negligible diameter) objects in video images is presented. The core of the algorithm is to detect the two boundary curves of a deformable linear object within adaptive tracking windows. The boundaries are found by analyzing the gray value gradients within the tracking windows, The algorithm provides a robust tracking of the shape- and width-changing object by using a fuzzy estimation of the object's membership function at the tracked points. The result of the segmentation is a list of base describing the shape of the object. This list is used to define features for shape change detection. For the feature analysis, we propose an algorithm which works well for several classes of feature curves. Experiments on robotic applications using both algorithms show promising results.
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