Prediction of the Necessary Degrees of Freedom for Helicotper Real-Time Simulation Models

2008 ◽  
Vol 45 (4) ◽  
pp. 1256-1266
Author(s):  
Marilena D. Pavel
Keyword(s):  
Real Time ◽  
Degrees Of Freedom ◽  
Simulation Models ◽  
Real Time Simulation ◽  
Time Simulation

Review of RT-LAB and Steps Involved for Implementation of a Simulink Model from MATLAB to REAL-TIME

2013 ◽  
Vol 14 (6) ◽  
pp. 641-658 ◽  
Author(s):  
Suresh Mikkili ◽  
Anup Kumar Panda
Keyword(s):  
Real Time ◽  
High Performance ◽  
Simulation Models ◽  
Specific Class ◽  
Real Time Simulation ◽  
Simulation Tools ◽  
Simulink Model ◽  
Computing Technologies ◽  
Time Simulation ◽  
Real Time Digital Simulator

Abstract In recent days, every researcher wants to develop his/her model in real-time. Simulation tools have been widely used for the design and improvement of electrical systems since the mid-twentieth century. The evolution of simulation tools has progressed in step with the evolution of computing technologies. Now a days, computing technologies have improved dramatically in performance and become widely available at a steadily decreasing cost. Consequently, simulation tools have also seen dramatic performance gains and steady cost decreases. Researchers and engineers now have access to affordable, high-performance simulation tools that were previously too cost prohibitive, except for the largest manufacturers and utilities.This article has introduced a specific class of digital simulator known as a real-time simulator by answering the questions “What is real-time simulation?” “Why is it needed” and “How it works”. The latest trend in real-time simulation consists of exporting simulation models to FPGA. In this article, the steps involved for implementation of a model from MATLAB to REAL-TIME are provided in detail. The detailed real-time results are presented to support the feasibility of real-time digital simulator.

Object-Oriented Modeling for Real-Time Simulation

2000 ◽  
Author(s):  
Miguel A. Otaduy ◽  
Ana I. Martínez ◽  
Ana Vidarte ◽  
Joseba Landaluze ◽  
Raúl Reyero
Keyword(s):  
Real Time ◽  
Mathematical Formulation ◽  
Object Oriented ◽  
Simulation Models ◽  
Mechatronic Systems ◽  
Modeling Tools ◽  
Real Time Simulation ◽  
Time Simulation ◽  
New Applications ◽  
Real Time Simulations

Abstract The fast growing processing capability of digital circuits allows real-time simulation of mechatronic systems to embrace new applications at a lower cost. However, the development of real-time simulation models is still a difficult task. Object-oriented modeling, along with efficient mathematical formulation, seems to solve this matter. The work covered by this paper was carried out in order to evaluate existing possibilities for the development of real-time simulations of mechatronic systems by means of object-oriented modeling tools.

Real-Time Prediction of Ship Interaction Forces Using Simplified Models

2015 ◽  
Author(s):  
Gustavo O. Silva ◽  
Eduardo A. Tannuri ◽  
Felipe Ruggeri
Keyword(s):  
Real Time ◽  
Simulation Models ◽  
Hydrodynamic Forces ◽  
Hydrodynamic Effect ◽  
Simplified Models ◽  
Ship Maneuvering ◽  
Real Time Simulation ◽  
The Real ◽  
Application Range ◽  
Time Simulation

Real-Time Ship Maneuvering Simulation Models is becoming more common and necessary in some feasibility analysis of ports and horizontal design. Due to the complexity of the hydrodynamic effects, a fairly realistic modeling is difficult to obtain, so that this type of simulation becomes limited in some cases. Large ships face difficulties to access ports once the shallow water and bank effects become significant. Since these factors are essential in some maneuverability studies, they must be modeled to Real-Time Simulations. In order to increase the application range of this kind of simulation, this paper presents simplified models to estimate additional hydrodynamic forces related to ship-to-ship and ship-to-bank interactions. Based on some physical input data which can be easily obtained during a Real-Time simulation, such as vessel speed and relative distances between a ship and another solid body, applying a set of measured points from the vessel to check the respective environment geometric shapes, identifying the bank conditions and other nearby vessels at a given instant. Thus, we are able to determine a realistic hydrodynamic effect. Due to the difficulty to create an accurate model, the prediction of the hydrodynamic forces was obtained from experimentally validated numerical methods such as the Boundary Elements Method (BEM), using the Rankine Panel Method. This validation consists in a comparative study among other works in this area to ensure a reliable response. The model calibration was performed using dimensionless coefficients and the BEM results are applied to the Real-Time simulation for a vessel type studied. In this study, a modeling of ship-to-ship will be presented modeled to interact in a Real-Time simulator, as a way to improve the real-time simulation and it will show that this method provides more realistic results to studies related to ship-to-ship interaction.

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