Repetitive processes are a class of 2D systems that can be used to model physical systems and also there are applications, such as iterative learning control, where using a repetitive processes setting for design has ...
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Paper deals with an algorithm which allows the automatic selection of the best operating point of biological system. This task is one of the subjects of research in the field of metabolic engineering, which deals with...
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The paper deals with the methodology of creation of sequential control system programs in the language of function block diagrams (FBD). After analyzing basic blocks of the sequential functions chart (SFC) language, t...
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The paper deals with the methodology of creation of sequential control system programs in the language of function block diagrams (FBD). After analyzing basic blocks of the sequential functions chart (SFC) language, the form of state block and implementation of branching or connecting paths of sequences are formulated using the FBD language. It is a simplification of the application of the SFC language. Our method of creating the sequential system ensures a compact form of the final program and is particularly useful for small PLC controllers. The method is illustrated by example of the simple sequential control system.
The autocorrelation is often used in signal processing as a tool for finding repeating patterns in a signal. In image processing, there are various image analysis techniques that use the autocorrelation of an image fo...
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A design method is proposed for LUT-based Mealy FSMs. The method is based on transformation of state codes into outputs of FSMs. Example of design and results of investigations are given. The method allows obtaining F...
A design method is proposed for LUT-based Mealy FSMs. The method is based on transformation of state codes into outputs of FSMs. Example of design and results of investigations are given. The method allows obtaining FSM logic circuits with less amount of LUTs than known from literature methods.
In this paper, the potential possibilities of robust tuning of the Balance-Based Adaptive controller (B-BAC) are discussed in terms of user-defined gain and phase margins. Considering the First Order + Dead Time (FOPD...
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ISBN:
(纸本)9781479917730
In this paper, the potential possibilities of robust tuning of the Balance-Based Adaptive controller (B-BAC) are discussed in terms of user-defined gain and phase margins. Considering the First Order + Dead Time (FOPDT) process to be controlled and starting from previously suggested simple B-BAC tuning method, the additional tuning parameter is introduced and its influence on the stability boundaries and on the robust tuning region is investigated, in comparison with the conventional PI controller. It is shown that the stability and robust tuning regions are larger for the B-BAcontroller and how the additional tuning parameter can be used for robust retuning of the B-BAcontroller.
In today's economy, it is crucial to optimize the resources used in agriculture, especially when the everyone goal is to get a high yield, with a higher profit, at a low cost as possible. Taking into account this ...
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In today's economy, it is crucial to optimize the resources used in agriculture, especially when the everyone goal is to get a high yield, with a higher profit, at a low cost as possible. Taking into account this context, the paper presents an architectural model for a Wireless Sensor Network, as a part of an Agricultural Geographic Information System, and describes the main components, the types of sensor used in this Wireless Sensor Network and three different ways to use them. In additional, ontology for Agricultural Geographic Information System is proposed, having the aim to offer a common view and to facilitate the understanding of the knowledge.
For the visually impaired people, navigating in unfamiliar environments represents a considerable challenge. In recent years, virtual reality based applications for the blind people have used the auditive channel as a...
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For the visually impaired people, navigating in unfamiliar environments represents a considerable challenge. In recent years, virtual reality based applications for the blind people have used the auditive channel as a way to convey perceptual and spatial information. This paper presents a sound localization experiment having the purpose of studying the orientation and mobility skills of 10 blindfolded subjects. Our research concluded that the use of the hearing sense as an alternate compensatory modality has a positive impact on the improvement of the localization skills and discrimination perceptual abilities in virtual reality based auditory environments.
A router exploiting the active queue management can drop arriving packets even if its buffer is not full. This is meant to notify the TCP senders to reduce their sending rates. One type of the active queue management ...
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A router exploiting the active queue management can drop arriving packets even if its buffer is not full. This is meant to notify the TCP senders to reduce their sending rates. One type of the active queue management is based on dropping arriving packets with probability that is a function of the queue size observed upon packet arrival. Although the queuing models of algorithms of this type have been developed, they present some numerical difficulties that have to be overcome in order to be practically usable, e.g. they require inverting large matrices. In this paper we compare several inversion methods with respect to their applicability in the parameterization of the dropping mechanism of the active queue management. In addition to their implementations on a CPU, we also check their performance when implemented on a graphics processor unit.
The continuous fermentation processes involving yeast Saccharomyces cerevisiae or bacterium Zymomonas mobilis often exhibit oscillatory behavior. Because, the oscillatory mode of operation may lead to higher or lower ...
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The continuous fermentation processes involving yeast Saccharomyces cerevisiae or bacterium Zymomonas mobilis often exhibit oscillatory behavior. Because, the oscillatory mode of operation may lead to higher or lower average ethanol concentrations, hence, there is a natural need to control this behavior. The idea presented in this paper is based on the use of a mixture of two substrates that are continuously fed into the reactor chamber and the continuous fermentation process is described by an unstructured mathematical model with a product inhibition on cell growth. The relative contribution of both substrates will be treated as a new control variable. Moreover, it is assumed that the microorganisms exhibit diauxic growth and that the occurrence of the oscillatory behavior is related to a time delay in the response of cells to changes in the environment. From the bifurcation analysis of the system, it is shown that an appropriate ratio of both substrates to the mixture allows for induction and elimination of the oscillatory behavior.
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