Aerodynamic Design Modeling and Simulation by Developing RFID Middleware

2014 ◽  
Vol 543-547 ◽  
pp. 1467-1470
Author(s):  
Shao Song Wan ◽  
Jian Cao ◽  
Cong Yan
Keyword(s):  
Modeling And Simulation ◽  
Graphical User Interface ◽  
Control Process ◽  
Simulation Method ◽  
Parametric Modeling ◽  
Superior Performance ◽  
Aerodynamic Design ◽  
Simulation Test ◽  
Test Environment ◽  
Rfid Middleware

In this paper, a parametric modeling and simulation method is proposed, which provides a virtual simulation test environment for photovoltaic radar. A graphical user interface (GUI) is developed using VC++6.0. With this system, the integration of CAD/CFD application is achieved. Application examples show that, this system can significantly improve the efficiency of aerodynamic design. Finally, it is proved that the control process of developing RFID middleware simulator has superior performance and expected effect.

Application of Photovoltaic Radar Target Simulator by Developing RFID Middleware

2014 ◽  
Vol 532 ◽  
pp. 179-182
Author(s):  
Shao Song Wan ◽  
Jian Cao ◽  
Cong Yan ◽  
Yun Yang
Keyword(s):  
External Environment ◽  
Control Process ◽  
Superior Performance ◽  
Infrared Light ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Simulation Test ◽  
Test Environment ◽  
Rfid Middleware ◽  
Radar Simulator

This paper discusses photovoltaic radar simulator by developing RFID middleware, which provides a virtual simulation test environment for photovoltaic radar. Through the intensity of infrared light supplies controlled by single-chip microcomputer, infrared supplies can simulate complex external environment. Finally, it is proved that the control process of the photovoltaic simulator has superior performance and expected effect.

Parametric Modeling and Simulation for Aerodynamic Design of Launch Vehicle

2011 ◽  
Vol 101-102 ◽  
pp. 697-701
Author(s):  
Zhong Quan Guo ◽  
Jian Xia Liu ◽  
Wen Cai Luo
Keyword(s):  
Modeling And Simulation ◽  
Modular Design ◽  
Simulation Method ◽  
Launch Vehicle ◽  
Aerodynamic Performance ◽  
Parametric Modeling ◽  
Design Parameters ◽  
Aerodynamic Design ◽  
Geometry Model ◽  
Design Variables

Aerodynamic design of launch vehicle is facing combinatorial explosion problem caused by modular design. In order to get basic feasible solution from huge design space, the efficiency of design and simulation must be improved. In this paper, a parametric modeling and simulation method is proposed, which is based on CAD/CFD tools. Firstly, the design Variables of the launch vehicle are divided into three categories: size parameters, configuration parameters and mesh parameters. Secondly, parametric geometry model, including size and configuration parameters, is obtained by secondary development of Pro/ENGINEER. Thirdly, parametric mesh files for CFD are generated by implementing CFD-GEOM with scripts written in Python. By specifying boundary conditions through command stream of GAMBIT, FLUENT software will run automatically to calculate the aerodynamic performance of the launch vehicle. Finally, a graphical user interface (GUI) is developed using VC++6.0. With this system, the integration of CAD/CFD application is achieved. As long as designers enter certain design parameters in the GUI, they will quickly achieve 3D geometry model and aerodynamic performance of the launch vehicle. Application examples show that, this system can significantly improve the efficiency of aerodynamic design of the launch vehicle, and the data error between simulation and experiment is less than 10%, which is acceptable.

Application of Photovoltaic Radar Target Simulator Using Neural Networks

2014 ◽  
Vol 543-547 ◽  
pp. 1583-1586
Author(s):  
Jian Cao ◽  
Cong Yan ◽  
Yan Bao Li
Keyword(s):  
Neural Networks ◽  
Stability Analysis ◽  
Control Process ◽  
Virtual Simulation ◽  
Superior Performance ◽  
Radar Target ◽  
Simulation Test ◽  
Test Environment ◽  
Expected Effect ◽  
Tiltrotor Aircraft

This paper discusses photovoltaic radar target simulator using NN, which provides a virtual simulation test environment for photovoltaic radar. A description of the controller architecture and associated stability analysis is given, followed by a more in-depth look at its application to a tiltrotor aircraft. Finally, it is proved that the control process of the photovoltaic simulator has superior performance and expected effect.

Application and Research of Instruction Serialization Technology in the Simulation Test System

2014 ◽  
Vol 1049-1050 ◽  
pp. 2049-2053
Author(s):  
Ai Rong Yu ◽  
Jun Wang ◽  
Xu Guang Ye ◽  
Guo You Chen
Keyword(s):  
Electromagnetic Interference ◽  
Physical Simulation ◽  
Control Process ◽  
Test System ◽  
Management Control ◽  
Simulation Test ◽  
Test Environment ◽  
Device Management ◽  
Object State ◽  
Interference Test

The process of converting a data structure or object state into a storable format is referred to as serialization. For the simulation of complex electromagnetic interference test environment, to evaluate the ability of the communication system, based on the semi physical simulation test environment, this paper presents a kind of instruction serialization mode based on TCP protocol as the data transmission and control scheme of multi device control, design and implementation of various types of equipment centralized monitoring framework for the realization of all kinds of network communications equipment and status data centralized testing and monitoring purposes, to achieve a data device management control process is accurate, real-time transmission.

scholarly journals Dynamic Analysis and Control of an Automatic Transmission for Start-Stop Function and Efficiency Improvement

2015 ◽  
Vol 2015 ◽  
pp. 1-13
Author(s):  
Yang Liu ◽  
Shuhan Wang ◽  
Peng Dong ◽  
Xiangyang Xu
Keyword(s):  
Control Strategies ◽  
Automatic Transmission ◽  
Simulation Method ◽  
Transmission Efficiency ◽  
The Novel ◽  
Test Results ◽  
Test Environment ◽  
Pump System ◽  
Oil Pump ◽  
And Control

An electric oil pump (EOP) was integrated into the hydraulic system and an automatic transmission (AT) mechanical oil pump (MOP) was downsized. These processes were performed to combine a start-stop function with the AT and further improve the transmission efficiency. Furthermore, this study established a dynamics model of power loss and leakage of an 8-speed AT; a flow-based control algorithm of the EOP was then developed to realize the start-stop function and support the MOP to meet the flow requirement of the system. Based on a driving simulation method, sizes of the MOP and EOP that ensured optimal fuel economy were selected. A control strategy for the starting clutch was also developed to minimize the starting delay of the test vehicle. A test environment on a rig and prototype vehicle was established to verify the feasibility of the proposed control strategies. The test results indicated that the transmission functioned favorably with the novel two-pump system presented, and a quick and smooth starting performance was achieved when the engine was restarted. The findings in this study are extremely valuable for forward designs of an AT for realizing start-stop function and improving efficiency.

Modeling and Simulation of the PMSM-Precision Reducer System with Modelica

2012 ◽  
Vol 201-202 ◽  
pp. 202-207
Author(s):  
Zhi Hua Li ◽  
Hong Guang Yang ◽  
Jun Yu ◽  
You Ping Gong
Keyword(s):  
Modeling And Simulation ◽  
Electromechanical Coupling ◽  
Permanent Magnet Synchronous Motor ◽  
Unified Modeling Language ◽  
Simulation Method ◽  
System Control ◽  
Dynamics Model ◽  
Physical Systems ◽  
Set Up ◽  
Complex Electromechanical Systems

There is still lack of effective modeling and simulation method for complex electromechanical coupling system. Modelica is a multi-domain unified modeling language to solve the modeling and simulation problems of the complex and heterogeneous physical systems. Dymola is a Modelica-based modeling and simulation platform for the complex physical systems. In this paper, the dynamics model of the permanent magnet synchronous motor (PMSM)-precision reducer system is established using Lagrange-Maxwell equation. The simulation model of this system is set up with Modelica language. The simulation of the system is realized in Dymola. Results show that the system can respond to good static and dynamic characteristics under a given speed for different loads. The dynamics model of the PMSM-precision reducer system can be further used in system control and optimization. The proposed modeling and simulation method based on Modelica may be commonly applied to other complex electromechanical systems.

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