scholarly journals SIESTA, a time domain, general purpose simulation program for the VIRGO experiment

1999 ◽  
Vol 10 (4) ◽  
pp. 369-386 ◽  
Author(s):  
B Caron
Keyword(s):  
Time Domain ◽  
General Purpose ◽  
Simulation Program

scholarly journals Design and Simulation of a New Intermodal Automated Container Transport System (ACTS) Considering Different Operation Scenarios of Container Terminals

2020 ◽  
Vol 8 (4) ◽  
pp. 233
Author(s):  
Sung-Ho Hur ◽  
Chaeyoung Lee ◽  
Hong-Seung Roh ◽  
Sebeom Park ◽  
Yosoon Choi
Keyword(s):  
Transport System ◽  
Road Transport ◽  
General Purpose ◽  
Specific Region ◽  
Container Terminals ◽  
Simulation Program ◽  
Processing Capacity ◽  
Container Transport ◽  
Equipment Size ◽  
Optimum Input

In this study, we have designed a new intermodal automated container transport system (ACTS) via a roll-on/roll-off method that connects a logistics hub between a port and inland. Further, we have presented the development of a simulation model and the results of the simulator development. A simulation program was developed using a general-purpose simulation system (GPSS)/H to predict the processing capacity of the ACTS system and derive the optimum input equipment size and operation method. Additionally, the PROOF5 program was used for the visual verification of the system algorithm and for users to intuitively view and monitor events occurring in the terminal. The simulation program developed in this study can be used in the future as a tool to compare and analyze the efficiency of the existing road-transport-based system and the proposed ACTS system when the latter is implemented in a specific region.

scholarly journals Modelling and Simulation of Tramway Transportation Systems

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
A. Capasso ◽  
M. Ceraolo ◽  
R. Lamedica ◽  
G. Lutzemberger ◽  
A. Ruvio
Keyword(s):  
Time Domain ◽  
Energy Recovery ◽  
Simulation Models ◽  
Transportation Systems ◽  
General Purpose ◽  
Storage Device ◽  
Time Domain Simulation ◽  
Real Cost ◽  
Braking Energy Recovery ◽  
Track Analysis

Electrified guided vehicles typically face routes having a large number of acceleration and braking phases. The braking energy, since the feeding line presents nonreversible electrical feeding substations, can be recovered in the presence of other nearby vehicles. To improve braking energy recovery, one or more storage systems can be positioned along the track. Analysis of effectiveness for the considered solution requires time-domain simulation models, to be created through suitable simulation general-purpose languages or specialised languages/software. In this paper, three different tools for the considered existing tramway were developed, and the main examined characteristics have been compared to each other. Then, analysis of output results was also performed, demonstrating the real cost-effectiveness of introducing one storage device on the considered tramline in operation.

scholarly journals Multi Simulation Platform for Time Domain Diffuse Optical Tomography: An Application to a Compact Hand-Held Reflectance Probe

2019 ◽  
Vol 9 (14) ◽  
pp. 2849 ◽  
Author(s):  
Edoardo Ferocino ◽  
Antonio Pifferi ◽  
Simon Arridge ◽  
Fabrizio Martelli ◽  
Paola Taroni ◽  
...  
Keyword(s):  
Time Domain ◽  
Count Rate ◽  
Breast Imaging ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
Cost Effective ◽  
General Purpose ◽  
Simulation Platform ◽  
Photon Count ◽  
Optical Properties Of Tissue

Time Domain Diffuse Optical Tomography (TD-DOT) enables a full 3D reconstruction of the optical properties of tissue, and could be used for non-invasive and cost-effective in-depth body exploration (e.g., thyroid and breast imaging). Performance quantification is crucial for comparing results coming from different implementations of this technique. A general-purpose simulation platform for TD-DOT clinical systems was developed with a focus on performance assessment through meaningful figures of merit. The platform was employed for assessing the feasibility and characterizing a compact hand-held probe for breast imaging and characterization in reflectance geometry. Important parameters such as hardware gating of the detector, photon count rate and inclusion position were investigated. Results indicate a reduced error (<10%) on the absorption coefficient quantification of a simulated inclusion up to 2-cm depth if a photon count rate ≥ 106 counts per second is used along with a good localization (error < 1 mm down to 25 mm-depth).

Transient Analysis of Multi-Conductor Transmission Line Based on the Second-Order Upwind Scheme

2014 ◽  
Vol 543-547 ◽  
pp. 821-824
Author(s):  
Yin Han Gao ◽  
Jun Dong Zhang ◽  
Kai Yu Yang ◽  
Tian Hao Wang ◽  
Yu Zhu ◽  
...  
Keyword(s):  
Transmission Line ◽  
Time Domain ◽  
Splitting Method ◽  
General Purpose ◽  
Second Order ◽  
Upwind Scheme ◽  
Application Process ◽  
Discontinuous Solutions ◽  
Leapfrog Scheme ◽  
Line Coupling

On the basis of the second-order upwind scheme, combined with the flux splitting method, we derive a uniform multi-conductor transmission line time-domain calculations. This method is a direct time-domain discrete numerical method with second order accuracy. It does not have any special requirements for circuit and the application process and complex transformations which lead to facilitate the preparation of the program. Numerical experiments show that this method of preparation of general purpose computing program has roughly the same computational efficiency with the traditional leapfrog scheme and at the discontinuous solutions, there are no non-physical oscillations. It can easily be used to calculate a uniform multi-conductor transmission line coupling.

scholarly journals A Global Robotic Telescope Network for Time-Domain Science

2011 ◽  
Vol 7 (S285) ◽  
pp. 408-410 ◽  
Author(s):  
R. A. Street ◽  
T. A. Lister ◽  
Y. Tsapras ◽  
A. Shporer ◽  
F. B. Bianco ◽  
...  
Keyword(s):  
Network Design ◽  
Time Domain ◽  
General Purpose ◽  
Technical Failure ◽  
Network Approach ◽  
Robotic Telescope ◽  
Astronomical Facility

AbstractLas Cumbres Observatory Global Telescope Network (LCOGT) is currently building a new kind of general-purpose astronomical facility: a fully robotic network of telescopes of 2m, 1m and 0.4m apertures and homogeneous instrumentation. A pan-network approach to scheduling (rather than per individual telescope) offers redundancy in the event of poor weather or technical failure, as well as the ability to observe a target around the clock. Here we describe the network design and instrumentation under development, together with the main science programmes already being lead by LCOGT staff.

Cascade control of hydraulically actuated manipulators

Robotica ◽  
1990 ◽  
Vol 8 (3) ◽  
pp. 207-216 ◽  
Author(s):  
N. Sepehri ◽  
G.A.M. Dumont ◽  
P.D. Lawrence ◽  
F. Sassani
Keyword(s):  
Computer Simulation ◽  
Frequency Domain ◽  
Time Domain ◽  
Control Strategies ◽  
Dynamic Modelling ◽  
Simulation Program ◽  
Fundamental Study ◽  
Effective Factor ◽  
Industrial Manipulators ◽  
Hydraulically Actuated

SUMMARYA fundamental study on the control of hydraulically actuated robots is presented. Dynamic modelling is performed in both time-domain and frequency-domain. It is shown that the inclusion of hydraulic elements increases the order of the system. Hydraulic compliance is the most effective factor in this regard.Three distinct control strategies are applied. Their performances are evaluated and compared. All three methods are exemplified with a two link hydraulic robot in a computer simulation. The robot has the same hydraulic configuration as many existing industrial manipulators. The simulation program is written in ACSL (Advanced Continuous Simulation Language) running on a VAX 11/750.

MODELING AND SIMULATION OF CONVERTER SYSTEMS PART II: SIMULATION PACKAGE TCAD

1995 ◽  
Vol 05 (04) ◽  
pp. 669-697 ◽  
Author(s):  
ROMUALD SZCZESNY ◽  
MIECZYSLAW RONKOWSKI
Keyword(s):  
Circuit Simulation ◽  
Critical Evaluation ◽  
General Purpose ◽  
Electrical Circuit ◽  
Simulation Program ◽  
Voltage Source ◽  
Engineering Practice ◽  
Pwm Inverter ◽  
Operation Conditions ◽  
Simulation Package

The methods, models and techniques — presented in the companion paper — have been used as a basis for the evaluation of popular general-purpose electrical circuit simulation programs, in particular, their applicability in the analysis of power electronic circuits. As a result of this critical evaluation, the general requirements for the simulation program adequate for converter systems studies and design have been formulated. On this basis the algorithm of TCAD — a general-purpose converter system simulation program — has been elaborated. In presentation of the TCAD program three parties have been distinguished: the first one emphasizes the applications of modern simulation methods for converter systems, the second describes briefly the features of the main modules of the TCAD package, and the third presents some simulation examples of practical converter systems. Three simulation examples are presented: two resonant converters and an induction motor drive fed by a full-bridge voltage source PWM inverter at normal and fault operation conditions. A good agreement between simulation and experimental results has proved that this simulation package is a power tool for research, teaching and engineering practice.

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