Real-Time Dynamic Data-Driven Simulation of Continuum Systems

2004 ◽  
Author(s):  
J. G. Michopoulos ◽  
C. Farhat ◽  
E. N. Houstis
Keyword(s):  
Real Time ◽  
Behavior Modeling ◽  
Time Data ◽  
Physical Systems ◽  
Real Time Simulation ◽  
Time Dynamic ◽  
Time Simulation ◽  
Speed Accuracy ◽  
Continuum Systems ◽  
Behavioral Monitoring

Recent proliferation of sensor networks in various application areas has promoted real-time behavioral monitoring of various physical systems. The opportunity to use sensor generated data dynamically for improving speed, accuracy, and general performance of predictive behavior modeling simulation is of paramount importance. The present paper identifies enabling modeling methods and computational strategies that are critical for achieving real-time or near real-time simulation response of very large and complex systems. It also discusses our choices of these technologies in the context of sample multidisciplinary computational mechanics applications and describes two examples to demonstrate the feasibility of integrating real-time data with real-time simulation.

A Recursive Formulation for Real-Time Dynamic Simulation

1988 ◽  
Author(s):  
D.-S. Bae ◽  
R. S. Hwang ◽  
E. J. Haug
Keyword(s):  
Real Time ◽  
Dynamic Simulation ◽  
Recursive Algorithm ◽  
Equations Of Motion ◽  
Design Tool ◽  
Real Time Simulation ◽  
Time Dynamic ◽  
Time Simulation ◽  
Design Variation ◽  
Multi Body

Abstract A new recursive algorithm for real-time, interactive dynamic simulation, animated graphics, and design variation analysis is presented for mechanical systems with closed loops. State vector kinematic relations that represent translational and rotational motion are defined, to simplify the formulation and to relieve computational burden. Recursive equations of motion are first derived for a single loop multi-body system. Faster than real-time performance is demonstrated for a closed loop robot, using an Alliant FX/8 multiprocessor. The algorithm is extended to multi-loop, multi-body systems for parallel processing real-time simulation in companion papers [1,2]. Performance of the algorithm on a shared memory multi-processor is compared with that achieved with other dynamic simulation algorithms. A vehicle example is used to demonstrate efficiency of the algorithm for real-time simulation and graphics rendering in a network environment, for use as an interactive design tool.

Real-Time Simulation of Pipe Network Based on EPANET

2014 ◽  
Vol 548-549 ◽  
pp. 1800-1803 ◽  
Author(s):  
Gen Yuan Zhang
Keyword(s):  
Real Time ◽  
Water Distribution ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Simulation System ◽  
Time Data ◽  
Real Time Simulation ◽  
The Real ◽  
Time Simulation ◽  
Real Time Data

Hydraulic simulation models of water pipe networks (WPN) are routinely used for operational investigations and network design purposes. However, their full potential is often never realized because in the majority of cases, they have been calibrated with data collected manually from the field during a single historic time period and reflects the network operational conditions that were prevalent at that time. They were then applied as part of a reactive investigation. An urban water distribution network real time simulation system based on EPANET system using OPC (object linking and Embedding for Process control) communication was built in this paper. In order to make real-time simulation of water distribution network, the real-time data was collected every 15 minutes, the real time data were received and sent into water distribution network simulation model by OPC communication of EPANET system. The real-time data included total head of reservoir, flow rate, pressure, pump operation information. The real-time simulation system can give timely warning of changes for normal network operation, providing capacity to minimize customer impact and comparing the simulation results with the real-time data collected. The real time simulation system of urban water pipe network solved the problem of data input and user interaction compare to traditional network model. It offers a way for the development of intelligent water network.

Real-Time Simulation Support for Runtime Verification of Cyber-Physical Systems

2017 ◽  
Vol 16 (4) ◽  
pp. 1-24 ◽  
Author(s):  
Xi Zheng ◽  
Christine Julien ◽  
Hongxu Chen ◽  
Rodion Podorozhny ◽  
Franck Cassez
Keyword(s):  
Real Time ◽  
Cyber Physical Systems ◽  
Runtime Verification ◽  
Physical Systems ◽  
Real Time Simulation ◽  
Time Simulation

3D Path Planning and Real-Time Simulation for Robot Manipulators With Applications to Aerospace Manufacturing

2004 ◽  
Author(s):  
Jason Michel Lambert ◽  
Iraj Mantegh ◽  
Claude Perron
Keyword(s):  
Path Planning ◽  
Real Time ◽  
Trajectory Generation ◽  
Angular Acceleration ◽  
Normal Vector ◽  
Data Generation ◽  
Time Data ◽  
Real Time Simulation ◽  
Aerospace Applications ◽  
Time Simulation

This paper presents a practical scheme for path and trajectory generation with applications in real-time simulation of robotic systems. The path planning is solved as a series of local obstacle avoidance problems which produce via points in the 3D Cartesian space as well as the normal vector to the obstacle surface at each via point. This vector is later utilized for trajectory generation. An intermediate orientation representation is used to guarantee continuity at the angular acceleration level for real-time simulation and control purposes. The proposed method is implemented in a real-time simulation environment for testing and final application. The real-time data generation allows hardware-in-the loop simulation, which is crucial in many aerospace applications.

Real Time Simulation of a VCM Plant

1997 ◽  
Vol 21 (1-2) ◽  
pp. S1111-S1115
Author(s):  
P Lundstrøm
Keyword(s):  
Real Time ◽  
Real Time Simulation ◽  
Time Simulation
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