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This paper presents ongoing work on the formalism of Cyber-Physical Systems (CPS) simulations. These systems are distributed real-time systems, and their simulations might be distributed or not. In this paper, we propose a model to describe the modular components forming a simulation of a CPS. The main goal is to introduce a model of generic simulation distributed architecture, on which we are able...
Modeling and Simulation (M&S) has become an essential tool in the development, testing and verification of operational software in a complex multi-domain, multi-threaded heterogeneous system of systems environment. The complex systems of today encompass mix of hardware sub-systems (with varying degree of capabilities), software environments (comprising a plethora of development environments, operating...
In order to evaluate combat effectiveness of missile weapon system, especially to provide guidance for structural plan design and fuse-warhead coordination design, this paper hereby studies issues about terminal efficiency of three-dimensional fragment type air-to-air missile. Terminal efficiency computation framework of projectile is established, and detailed modeling is conducted to single-shot...
Finite difference time domain (FDTD) method is widely used to understand and interpret results of Ground penetrating radars (GPR). Simulation studies using FDTD on response of buried features to GPR is a standard practice. However, quantification of these simulated GPR response, which is required for application to real life problems, is not common. In the present work, several scenarios of pipe buried...
Today, most large and complex systems such as aircrafts or power grids integrate physical and human aspects with computing and networking, and therefore constitute so-called socio-cyber-physical systems (SCPS). Their engineering, from prospective and conceptual studies (to determine the scope of the system) through design and construction to operation, maintenance and upgrades, necessitates the cooperation...
Military modelling and simulation plays a key role in troops training as well as in verification of military scenarios. Most of topics in the modelling of military performance were already successfully implemented into the simulators (like troops moving, fighting, aircraft simulation, etc.) however the simulation of surface (ground) based air defence systems capabilities are not fully developed now...
Air Data Computer (ADC) is an electronics device computes air data flight parameters. The objective of this paper is to analyze, simulate, and propose hardware implementation module for the Air Data Computer. Simulation of ADC model has been faced by two problems. The first one was to choose true values of dynamic temperature because it depends on flight altitude and airspeed. The second problem is...
In order to meet the requirements of hydraulic servo control technology, the structural parameters of the hydraulic flapper-nozzle of the water hydraulic servovalves are studied. By theoretical analysis, the simulation conditions of the hydraulic flapper-nozzle valve are confirmed. Simulation method is used to analyze the diameter of nozzle straight tube and the diameter and length of nozzle hole...
This paper proposes a method to calculate the lift force of propeller using simulation software FLUENT. And on the basis of this, a certain degree of applicability of the formula from blade element theory is verified. It also presents suggestions for the analysis of the lift force of the propeller in the case of the impact of the incoming flow.
The study of single and bistatic radar scattering characteristics on stealth aircraft, for the future of collaborative detection on aircraft swarms is of great significance. Based on the characteristics analysis of stealth aircraft, using the software FEKO to establish stealth aircraft model, focusing on simulation research in different polarization ways, single and bistatic radar static RCS, through...
The explosion of Internet traffic mainly due to multimedia services is bringing real challenges to Internet Service Providers (ISPs). Content Delivery Networks (CDN) aim to face this traffic growth by replicating content as close as possible to end-users. Nevertheless, several issues related to the localization of CDN nodes are involved in the CDN design. The goal of the CDN optimization is to increase...
At the Institute of Computer Science at Silesian University in Opava is developed multi-agent system (MAS) in the form of a swarm of unmanned aerial vehicles (UAV). For the simulation of the multi-agent system was proposed double-layer software environment. As the presentation layer was selected the simulation tool Webots that enables detailed parameter settings of an individual agent (flying device...
Aviation combat decision-making process has become a key issue in air battlement and puzzled many commanders and researchers several decades. This paper uses Agent-based modeling to simulate battlement scenes and use neural networks as an assistant before the commander make real decision. The paper use further “Cloud War” scenario as an example to show the usefulness of this methods. In the end, this...
Application of neural networks for direct prediction of lateral-directional force and moments coefficients from the measured flight data of the research aircraft is proposed in this paper. Proposed model of neural networks appears to be a suitable practical approach to develop relationship between flight variables. This relationship eliminates the need of aerodynamic model as well as thrust model...
The paper holistically discusses the analysis and simulation of simplified two diode model and its comparative analysis with the one and three diode models. The two diode model presented has been grounded on the interpretation of the output current equation. This model entails four parameters and condenses the complexity and the computational time considerably. I-V and P-V curves for two diode model...
A simulation framework of a guided ballistic missile has been developed to aid the design and development of autopilot of a missile guidance system. In this framework, a hardware-in-the-loop (HIL) is utilized in the autopilot. The system dynamic engine works with the hardware autopilot in order to guide the simulated missile platform during a flight. Performance of the hardware autopilot is evaluated...
Total Pressure and Stock Level in the headbox of a paper machine control the quality of paper produced and cross directional flow at the slice. Thus, these are the important parameters to be controlled. With the advancement in artificial intelligence, mathematical approaches that demand high degree of precision has been avoided by using the best estimates in the research work. Soft computing technique...
In complex systems, like the modern air traffic system, human operator taskload can have a profound influence on how well the system performs. Because of the system's complexity, however, it can be difficult to determine all of the situations where taskload issues can arise. Simulation and formal verification have been used separately to explore human taskload in complex systems. However, both have...
Simulation of human flow in virtual reality systemplays an important part in the research of microscopic humanflow behaviour in disaster situations. But developing such simulationis a difficult work because of its inherent complexity. In thispaper, we proposed a multi-agent simulation to analyze humanflow characteristics in disaster affected area and the interactionmechanism among human or between...
The design of the payload for a UAVs robotic assembly system is of the highest importance. This is the piece of the work cell that physically interacts with the environment. The paper present a payload for HIRRUS V1, which is analyzed in terms of kinematic and dynamic. Functional calculation is presenting for the payload mechanism. Also, dynamic modeling are presented for retracted payload and small...
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