Design Of Simulation System Research Articles

Design and Implementation of Visual Simulation System for Strapdown Inertial Navigation

To obtain real-time navigation data, actual flight involves a lot of efforts as well as a heavy financial budget, and the collected data can hardly be reused. Visual simulation system for strapdown inertial navigation was developed. The system is based on object-oriented thought and modular design, outputs SINS simulation data in different flight conditions and precisions, and shows simulation data on virtual multi function display. The system has the feature of flexibility and extensibility and can be used to reduce effectively the experimental expense and shorten the developing period of strapdown inertial navigation system. The real-time SINS simulation data output is of enormous engineering significance to verify the inertial navigation system algorithm, and complete the integrated avionics systems cross-linking experiments in laboratory.

Simulation Study on Power Load Characteristics Influence Voltage Collapse Process

This paper proceeds from basic circuit model, analyzing the influence of different characteristic load on voltage collapse. And then make the simulation system design. Take some examples to analyze the relation of the process of voltage collapse with system and load conditions.

On the Design of Simulation System of Intelligent City Taxi Call

The city taxi system is characterized as inconvenience information interaction with passengers and regional imbalance. With the development of wireless network technology, VANET can realize the real-time information interaction between taxi and passengers. Thus to conduct reasonable taxi scheduling and improve the efficiency of the taxi system. In order to validate the effectiveness of intelligent call system of city taxi which adopts the wireless network technology, this study provides a taxi control simulation system based on the wireless network, thus to analyze the behavior of vehicles and passengers. The results show that the real-time taxi call system and intelligent scheduling by using the wireless network technology can effectively reduce the not-taken rate and the average waiting time of passengers.

Research on General Design of HLA Based Communication Command Equipment Operation Simulation System

The general design of HLA based communication command equipment operation simulation system is given to solve the difficulty of large equipment operation training. Firstly, the simulation system and its constitution are introduced. Secondly, two different federation runtime structures including single federation basic structure and multiple federations structure are designed according to system architecture. Thirdly, information interaction mode of training and FOM are concluded. Finally, two kinds of system application modes consisting of communication skill training and communication command training are presented.

SU‐E‐I‐57: Design of a Tabletop Simulating and Testing System for CT Research and Development

Purpose: The performance of a CT system can only be maximized with an optimal combination of design parameters, which need to be thoroughly studied at its early development stage. The purpose of this investigation is to develop a tabletop simulating and testing system for CT research and development. The main functionalities of the system include the simulation of different scanning modes, verification of imaging quality, and testing of key components of CT system. Methods: The tabletop system assembly is composed of three subassemblies: a stationary gantry and its supporting frame, a rotating and elevating stage and its servo system, and a high resolution arc trail testing mechanism. The entire assembly is placed on a rigid mounting table to minimize possible vibration. X‐ray tube and detector assembly can be easily mounted or removed in order to accommodate the need of different testing tasks. A high resolution servo motor is used to drive a detector testing device to move along the rail to scan through the detector array under testing. Results: A tabletop system is designed for CT imaging simulation and key component testing. During testing, the x‐ray tube and detector assembly of the proposed system stay stationary during imaging acquisition. A variety of CT scanning modes and imaging simulations instead can be achieved by controlling the motion of an object rotating and elevating stage. A high resolution arc trail testing mechanism is also adopted for the spatial localization required for detector testing. Conclusion: Our preliminary Result of the prototype system has demonstrated its capability of performing a variety of simulating and testing tasks and providing reliable outcomes in a satisfactory fashion. This new system, with its unique and flexible design, will provide a viable way to speed up the CT research and development process.

The Calibration of Piezoelectric Phase-Shifter Based on the Improved 2-D FTP

In this work, we proposed a new calibration of piezoelectric phase-shifter using probability analysis based on Two-dimensional Fourier transform profilometry (2-D FTP). We tested the surface of the object under the noisy condition using the newly designed simulation system. It is found that both the relative and the absolute error are much less than those from the traditional method.

Design Research of Computer Aided Design and Entity Simulation System of Epicycloids Bevel Gear

Bevel gear due to the high load carrying capacity, low noise, smooth transmission, is widely used in automobiles, aircraft, ships, precision machine tools, construction machinery. In this paper, the design study of computer aided design and entity simulation system of epicycloids bevel gear is conducted with VBA as the basic tool. The basic principle of epicycloids bevel gear solid modeling is analyzed. The basic process of epicycloids bevel gear design and calculation is expounded in detail, including geometric parameters calculation, strength check and cutting adjustment calculation of epicycloids bevel gear. Two-dimensional diagram drawing and entity simulation of epicycloids bevel gear are realized by program. The problems that should be considered of in entity modeling process are analyzed. A new thought for epicycloids bevel gear research and calculation is proposed.

Design and Implementation of the Simulation Information System of Marine Oil Spill

Migration and diffusion of oil spill in sea is an extremely complex issue by the impact of the oil features and a variety of environmental factors, undergoing expansion, drift, evaporation, dispersion, emulsification, dissolution, photo-oxidation, biodegradation and their interactionsand many other processes ，at the same time has a direct relationship with the local meteorological conditions and law motionofseawater. Marine oil spill behavior analysis and research of the system, using VB technology and C#technical design and development of a marine oil spill simulation system based on Geographic Information System (GIS). The system using cloud-based GIS for a platform, using the Monte-Carlo method to simulate the behavior of chemicals in seawater on the system of cloud computing, the organic integration of GIS system application model

Designing and Realizing of UAV Simulation System

This paper discusses an Unmanned Aerial Vehicle simulation system design and implementation, which focuses on the system design, system management, software development, and the information flow management of the whole system. To simulate battlefield environments, this system provides a clear and visual expression way for complex system design. Besides, it provides services for the design, integration testing, experiment, verification and evaluation of complex system. The main tasks of the system include: establish flight control simulation model; construct three-dimensional visual environment model and three-dimensional entity model; In the case of aircraft loading, drive various kinds of simulation modules, use related model of aircraft task / path planning module; display the typical use of aircraft system visually, as combining with three-dimensional visual simulation environment. Based on VC++ and MultiGen Creator/Vega, this simulation system probes into three-dimensional modeling technology and visual simulation-driven. It proposes general techniques route, improves work efficiency and has a wide range of application.

Design of the Low Gravity Simulation System for Planetary Rovers

A large scale gravity compensation system for planetary rovers is designed. The compensation system comprises a tension system and a position system: the tension system generates the constant tension of the string; the position system carries the tension system to follow the horizontal motion of the rover so as to keep the string vertical. To acquire rapidity and dynamic precision without resonating the position system, a macro-micro and open-closed loop design is brought forward: the coaxial macro and micro motors drive the winding drum to adjust the length of the cable; a constant-force mechanism is used to strain the string. The macro motor generates the majority of the tension and suppresses the low-frequency disturbance; the micro motor precisely adjusts the tension of the string to suppress intermediate-frequency disturbance; the constant-force mechanism suppresses high-frequency disturbance with its open loop performance. To precisely follow the rover over a large scale, a double position servo system is used: the girder-trolley system carries the two-dimensional platform; the girder-trolley system covers a large area but is sluggish and imprecise, and therefore is used to imprecisely follow the rover over a large area; the platform is precise and fast but covers a small area, and therefore is used to precisely follow the rover. The system covers a 30 m×30 m area. Experiments show that the position error does not exceed 0.01 m and the force compensation error does not exceed ±0.5% under normal working condition. When step interference emerges, the force compensation error does not exceed 1.5%.

1012 マルチスケール製品設計ライフサイクル・シミュレーション・システムの設計と開発(生産加工・工作機械2,設計工学・システム)

1012 マルチスケール製品設計ライフサイクル・シミュレーション・システムの設計と開発(生産加工・工作機械2,設計工学・システム)

ABS Simulation System of Automobile Based on Virtual Technology

The difficulty of car ABS system on the teaching analysis, design, automotive brake simulation control system based on virtual technology through Labview software and data acquisition card with the host PC, as well as control the drive circuit and the sensor circuitdesign, car braking process simulation, the composition of the ABS system, the structural and mechanical connection between the real show, but also by the ABS system failure code corresponding to the fault simulation settings for simulation training in diagnosis and exclude vehicle use and maintenance of the common failures of the ABS system. The results showed that: automotive brake hardware circuit design, simulation control system is reasonably practicable, the control strategy used by the software is correct and effective, stable and reliable system operation, automotive brake simulation system design teaching.

Multi-Scale Product Design and Lifecycle Simulation System for Nano Product Design

Product designer is demanded to harmonize technical, economic, social, and environmental aspects of designing product. It is important for product designer to get the overview and the forecast of the property and the influence of the designing product by computer simulations. In order to support product designer and material designer, multi-scale product design and lifecycle simulation system is proposed. The multi-scale product design and lifecycle simulation system consists of multi-scale product design and simulation (MPDS) sub-system and product lifecycle simulation (PLS) sub-system. Concept of MPDS sub-system is an expansion of concept of current CAD/CAE system. Multi-scale products from micro/nano scale level to human scale level are designed continuously in the MPDS sub-system. Concept of PLS sub-system is an expansion of concept of current LCA system. PLS sub-system carries out product lifecycle simulation and evaluation of designing product. PLS sub-system is designed from the point of view of the interactions of subjects. The information of designing product is projected into PLS sub-system as a structured token including product information made by MPDS sub-system. Then, PLS sub-system carries out product lifecycle simulation.

Design of Acceleration Sensor Simulation System Based on STM32

A method about the simulation system of automobile acceleration sensor basing on STM32 is introduced in this paper. This system can simulate acceleration sensor signal of the real car and make the status and values of acceleration sensor to be controlled by PC. Designing of the whole project, power on detection of the acceleration sensor and the Manchester Code used for information transferring between simulation system and airbag ECU are introduced in this paper. This design is used in the detection and diagnosis system of ABRS ECU to provide acceleration signal.

Asymmetric Tunnel Field-Effect Transistors as Frequency Multipliers

This letter proposes a novel application of asymmetric (double-gate) tunnel field-effect transistors (asymmetric TFETs) as a frequency multiplier. Work-function tuning of an asymmetric TFET was used to demonstrate symmetric ambipolar transfer characteristics by TCAD simulation. Unlike the conventional balanced FET-based multiplier, the asymmetric TFET design needs only one transistor for rejecting odd harmonics. Advanced design system simulations are used to compare the performance of an n-type FET and an asymmetric TFET frequency multiplier.

A novel data transfer technique for bio-implantable devices through the inductive power transfer link

A novel technique for transferring data to biomedical implantable devices through the inductive power transfer link is presented. The new modulation technique presented in this paper is based on changing the duty cycle of the switching pulse of the class E power amplifier which drives the external coil. Hence, we call it duty cycle shift keying (DCSK). Inductive link efficiency and voltage gain are analyzed for the DCSK technique. Based on the mathematical analysis of the proposed technique its bit error rate is close to that of the BFSK. However, it can achieve a data rate to carrier frequency of 100 %. The modulator and demodulator of the proposed technique are simple and make it suitable for bio-implantable devices. The proposed circuit is simulated by advanced design system simulator using the 0.18 μm CMOS technology. Moreover, in order to verify the effectiveness of the proposed technique, a test setup is implemented using off-the-shelf components. The simulation as well as measurement results will be provided in this article.

Design and Implementation of Unmanned Vehicle Simulation System

The design use the car simulate unmanned vehicles, it take voice identificate and Bluetooth technology to control unmanned vehicles, Through identificate the speech of control person, extract the valid instruction, and send the instructions to car via bluetooth. After the car identificating the command, it can automatically finish the basic functions of start, forward, backward, turn left, turn right, accelerate, decelerate, stop, turn on the lights, turn off the lights automatically avoid obstacles and tracing. The car model also install LCD, four infrared sensors and long-range ultrasonic ranging sensors, it have good scalability, the model have a good reference value for the real unmanned vehicle.

Design of Villages and Towns Flood Disaster Simulation and Emergency Decision Support System

China is a country prone to natural disasters, especially the flood disaster. In order to improve the villages and towns flood emergency management, through a series of methods such as information management and simulation, the establishment of emergency decision support using information technology to reduce losses caused by floods, the visualization technology is used in the virtual reconstruction model of floods, intuitive way to simulate the dynamic spread of the process of the flood disaster, in a safe and economical method to obtain the number of indicators of disaster-related decision. It provides a new method and ideas, and then it gives a reliable basis for the flood prevention and emergency management. The visualization analysis and decision is achieved for the villages and towns flood control, and it provides great support for the villages and towns flood mitigation and prevention. The result shows that the system is useful and meaningful in the town flood mitigation.

Research on Anti-Mine Acoustic Countermeasure Simulation System Based on HLA

This design of the anti-mine acoustic countermeasure simulation system based on HLA was proposed for the requirement of anti-mine combat simulation. Following the technique frame of HLA, the composition and characteristic of the system were analyzed, and the general framework of acoustic countermeasure simulation system was given. The implementation of federates was explained by describing the framework of federation, flow chart and FOM/SOM of federation. And the problem should be paid attention to was proposed at last. The simulation system laid the foundation for the acoustic magnetic combined countermeasure system.

Research on the Real-Time Simulation System Design for Missile Based on RT-LAB

Abstract A semi-physical simulation system is developed based on the RT-LAB real-time simulation environment which is used to process simulation test of missile guidance controlling system. The system adopts design idea of modularization, development of all sub-system together and it integrates the Hi-fi missile aerodynamics environment, missile boron computer system, inertia measurement unit, high accurate aviation posture simulator, real missile boron port equipment, three-dimensional view and data backup system into one so that the performance of guidance controlling algorithm could be reflected comprehensively, directly and really. According to the comparison between test result of digital simulation and semi-physical system simulation, the feasibility of semi-physical simulation could be certified so that under the semi-physical simulation environment, more real and effective test could be checked for guidance controlling algorithm.