Modern complex system design demands modeling on a high level of abstraction together with the system environment components. Such model enables mission level system simulation in the context of its operational condit...
An implementation of a computational tool to generate new summaries from new source texts in Portuguese language, by means of connectionist approach (artificial neural networks) is presented. Among other contributions...
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This paper deals with the problem of semiactive vibration control of civil engineering structures subject to unknown external disturbances (for example, earthquakes, winds, etc.). Two kinds of semiactive controllers a...
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ISBN:
(纸本)9780780397958
This paper deals with the problem of semiactive vibration control of civil engineering structures subject to unknown external disturbances (for example, earthquakes, winds, etc.). Two kinds of semiactive controllers are proposed based on the backstepping control technique. The experimental setup used is a 6-story test structure equipped with shear-mode semiactive magnetorheological dampers being installed in the Washington University Structural Control and Earthquake engineering Laboratory (WUSCEEL). The experimental results obtained have verified the effectiveness of the proposed control algorithms.
Virtual 3D models play important role in a today factory layout design, physical modeling, control synthesis, performance analysis, dynamic simulation and visualization of real systems. In this paper, we go one step f...
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Virtual 3D models play important role in a today factory layout design, physical modeling, control synthesis, performance analysis, dynamic simulation and visualization of real systems. In this paper, we go one step further and besides visualization, we monitor all measurable states in the real system and use active 3D models in-the-loop for real-time supervisory control. Such concept enables an event detection not possible with conventional sensors, including the ability to predict possible outcomes in the system operation. A virtual environment simulator and the way it can be connected to other simulators (e.g., Matlab/Simulink), is presented. The examples of virtual sensors, and collision free-based trajectory planning for robotic manipulators are demonstrated
Power consumption and heat dissipation become key elements in the field of high-end integrated circuits, especially those used in mobile and high-speed applications, due to their increase of transistor count and clock...
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Power consumption and heat dissipation become key elements in the field of high-end integrated circuits, especially those used in mobile and high-speed applications, due to their increase of transistor count and clock frequencies. Dynamic thermal management strategies have been proposed and implemented in order to mitigate heat dissipation. However, there is a lack of a tool that can be used to evaluate DTM strategies and thermal response of real life systems. Therefore, in this paper we introduce and define for the first time the concept of thermal benchmark software as a software concept (and tool) for run-time system level thermal characterization.
We present a methodology by which multiword communication could one day be realized in a population of evolving Artificial Life agents. The method which combines genetic algorithms and artificial neural networks has t...
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We present a methodology by which multiword communication could one day be realized in a population of evolving Artificial Life agents. The method which combines genetic algorithms and artificial neural networks has the prospect of a gradual increase of communication complexity (multi-word communication) through a series of evolutionary phases that take place in tandem. This is a layered treatment of gradual increasing complexity thus making the framework suitable for computational investigations. We present an example in which agents evolve a shared lexicon that pertains to two concepts (direction and quantity) and address the issue of the ordering of the lexical forms of those concepts.
Underwater vehicles are highly nonlinear and complex systems, that makes designing autopilots extremely difficult. This paper presents autotuning as a method for tuning parameters of a micro-ROV autopilot. The main be...
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Underwater vehicles are highly nonlinear and complex systems, that makes designing autopilots extremely difficult. This paper presents autotuning as a method for tuning parameters of a micro-ROV autopilot. The main benefit of this procedure is that the model of the process does not have to be known. Autotuning is often used for industrial processes but not on marine vessels. This procedure, which is performed in closed-loop, is completely automated and enables the operator to retune an autopilot whenever ROV performance is degraded (due to different operating points, tether influence, currents, etc.). In this article we use already known different autotuning recommendations (primarily designed for type 0 processes) with some modifications which we recommend for micro-ROVs. We also give results of using different types of PID controllers, whose parameters are being tuned. A real life demonstration on a VideoRay Pro II micro-ROV is provided
This paper deals with the problem of semiactive vibration control of civil engineering structures subject to unknown external disturbances (for example, earthquakes, winds, etc.). Two kinds of semiactive controllers a...
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The paper summarizes knowledge acquired from analysis of automatic control of municipal solid waste incinerator plant during the reduction of nitrogen oxides (NOx). On the base of theoretical analysis and practical me...
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ISBN:
(纸本)8086059456
The paper summarizes knowledge acquired from analysis of automatic control of municipal solid waste incinerator plant during the reduction of nitrogen oxides (NOx). On the base of theoretical analysis and practical measurement it was derived that the standard control concept is not suitable. The reason is a lacking influence of ammonia during reduction of nitrogen oxides and this non-linearity of plant is contradicted for utilization of integral component in controller's transfer function.
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