Design and implementation of lunar surface inspection simulation and validation system

Research and design of simulation and verification system of intelligent expressway based on ETC big data

Design of unmanned swarm intelligent operation simulation and evaluation system based on the technologies of modeling and simulation, intelligent operation, effectiveness evaluation, is presented for the requirements of unmanned equipment demonstration, combat concept demonstration, combat application research. According to the basic function of traditional operation simulation system, the simulation function and model of unmanned swarm mission command are put forward in this design, which can provide effective simulation of unmanned swarm intelligent operation with platform unmanned and system manned. Moreover, general and extensible system architecture is provided in this design, which is useful to extend the unmanned swarm mission, command function and simulation model to comply with the development of unmanned equipment and intelligent operation mode.

The amalgamation of pervasive computing and simulation technology is very useful and important. The HIL (Hardware In Loop) simulation is a specified system and one of simulation system compositions. It will bring more convenience resource sharing and serving to users by amalgamation of pervasive computing and HIL simulation system. Design of HIL simulation system is just finding an approach of reforming and expanding a HIL simulation system to apply to pervasive computing. Such as analysis of designing objective for HIL simulation system research, designing scheme of system, key technologies correlating to system design, and so on.

Purpose – The purpose of this paper is to develop an automatic disassembly navigation approach for human interactions in the virtual environment to achieve accurate and effective virtual assembly path planning (VAPP). Design/methodology/approach – First, to avoid the error-prone human interactions, a constraint-based disassembly method is presented. Second, to automatically provide the next operable part(s), a disassembly navigation mechanism is adopted. Finally, the accurate assembly path planning can be obtained effectively and automatically by inversing the ordered accurate disassembly paths, which are obtained interactively in the virtual environment aided with the disassembly navigation matrix. Findings – The applications present that our approach can effectively avoid the error-prone interactive results and generate accurate and effective VAPP. Research limitations/implications – There are several works that could be conducted to make our approach more general in the future: to further study the basic disassembly direction deducing rules to make the process of determining disassembly direction totally automatic, to consider the hierarchy of the parts in virtual reality system and to consider the space for assembly/disassembly tools or operators. Originality/value – The approach has the following characteristics: a new approach to avoid the error-prone human interactions for accurate assembly path planning obtaining, a new constraint deducing method for determining the disassembly semantics automatically or semi-automatically is put forward and a new method for automatically identifying operable parts in VAPP is set forward.

The Graduate Automotive Technology Education (GATE) Center at the University of Tennessee, Knoxville (UTK) offers courses addressing the simulation, modeling, and control system design of hybrid electric vehicles (HEV). In the Spring of 1999 such a course was conducted to support the UTK FutureCar Challenge entry for 1999. The vehicle modeled is a Dual-configuration Hybrid Electric Vehicle (DHEV) which uses a planetary power-split device similar to the Toyota Hybrid System used in the Toyota “Prius”. The goals of the course included the development of a real-time simulator that could incorporate actual vehicle control hardware in the simulator loop. This “control-hardware-in-the-loop” (CHIL) configuration was used for simulation, control system design, and troubleshooting. This approach allows the simulation of normal vehicle operating conditions as well as emergency fault handling situations in which it may not be desirable to subject the actual prototype vehicle to a given test condition. Additionally, it is possible to do a great deal of control system testing and development without an operating vehicle.

Strap-down inertial navigation system (SINS) is widely used in military field, to facilitate the study of SINS algorithms and various coupled navigation algorithms, a simulation system of SINS is designed. Based on modular design, with good portability and expansibility, the system consists of four independent modules: analysis module of motion state, trajectory simulator, IMU simulation module and SINS calculation module. With graphical interface, the system can control every motion state of the trajectory, which is convenient to generate various trajectories efficiently. Using rotation vector attitude algorithm to process simulation data, experiment results show that the attitude, velocity and position error is consistent with the theoretical value, which verifies the rationality of the simulation model and the availability of the simulation system.

This paper designs and implements a simulation system that can verify the planning algorithms such as table tennis trajectory planning and robot leg movement planning. The simulation system and the humanoid robot’s control system are connected based on the RTnet real-time Ethernet protocol. The table tennis game of the humanoid robot is implemented using the simulation of the forward and inverse kinematics of the robot arm, the hitting planning, and the forward and inverse kinematics of the robot leg.

This tutorial has two purposes: to show how the features of CLOS affect a design and to describe the design of a general-purpose simulation system. The tutorial is designed for those who want to understand the practical importance of the unique features of CLOS and also those who would like to learn how to use or build object-oriented simulation systems. The tutorial emphasizes the underlying model of object-oriented programming in CLOS and distinguishes it from other models. It also describes the requirements of a simulation system and the design of DEVS-CLOS, a publicly available simulation system. DEVS-CLOS is an extension to CLOS that supports modeling and simulation. It supports visualization, supports hierarchical design of simulations, allows first-order logic in models, and supports adaptive system simulation. The tutorial shows how a system like DEVS-CLOS can be used to solve typical simulation problems, and how CLOS concepts like multimethods, multiple inheritance, pre- and post-methods and dispatching algorithms were used in the design of DEVS-CLOS.

Based on the analysis of the broad band wireless communication, we design a wireless terrain network with some different subnet of satellite, microwave, LTE, and so on. OPNET provides a virtual network environment, through the modeling of the network. We give the simulation flow of the wireless communication. It designs the station node and satellite node, and builds a simulation system for the broad band wireless communication by OPNET. According the wireless communication topology, it realizes the network simulation system with six zone subnets which contain six single users and two communication vehicles. It contains the communication satellites which use the transparent transponders. The simulation system can display the dynamic route by the simulation system. It also can analyze the performance and efficiency of the wireless system with the parameters, such as: throughput, delay, processing delay, Packet Loss Ratio. It can use “Failure Recovery” module in the simulation system and set the parameters and analyze the communication system influence.

study presented is the project: A Study on the Techniques of Major Danger Supervision And Precaution on the subject of The Evaluation and Macro-control Techniques of Major Danger Source of Key Technology of Labor Safety, a national key scientific and technological project of the 8th five-year plan. As shown in the study, the modern technological means will enable the solution of the safety observation and control of major danger source in the field of labor safety. Hence a supervision and precaution system capable of temporary supervision, forecasting of abnormal situation and immediate control of critical state, such as formed by the integration of sensor technology, multimedia technology, computer technology, technology of diagrams and figures, model and simulation technology and automatic control technology, based on the theories and practice of systematic safety engineering, will serve as the technical support to improve the level of safe working.

In this paper, design and implementation of a radar signal simulation system is introduced. It is based on standard CPCI bus and follow the design principle of standardized, modular and extendable in design process. This system is made up of standard hardware and the simulated waveform can be obtained from any algorithms. This system is felxible to extend based on complexity of the algorithms.

In recent years, with the continued progress of science and technology, as an aided tool for physical training, the computer plays a more and more important role in continuously penetrating the high-tech achievements in the sports. The computer simulation technology has been a breakthrough in the training, which has caused the attention of the majority of sports coaches and athletes. According to the analysis of each subject of the sports training, we find that the computer simulation technology has not fully obtained the popularization and application in many aspects of the sports, which is related to the development levels of the computer simulation technology. The simulation system designed in some directions is not practical, and some are still in the blank. Therefore the application of the simulation system in the sports training has a long way to go.

A simulation system was established in the Matlab/Simulink environment based on the bionic underwater vehicle propelled by multiple undulating fins. It was composed of motion and attitude controller and plant model including 6DOF rigid body kinetic model, carrier's hydrodynamic model, and multiple undulating fins' hydrodynamic model. All parts of the simulation system were designed in detailed, and a layered control system was put forward. Finally, the performance of the control channels for speed, depth and yawing were simulated in terms of the real design parameters and hydrodynamic coefficients. Results show that the simulation system has important significance to research on the dynamic of the bionic underwater vehicle and verify the design of control system.

The theoretical basis and implementation solution of business process simulation and analysis system (BPSAS) is put forward in this paper. With workflow technology, Petri net theory and simulation technology, the workflow engine independent business process analyzing system is realized to provide Petri net based business process analysis. Further more, an example is illustrated to demonstrate how to analyze business process in order to select optimized model. And at the same time, as a business process analyzing tool, it supports the specified BPM (business process management) process.

This paper introduced the background of LNG powered ship reliquefaction plant and its working principle, established the calculation model of simulation system, taking the VLCC ship LNG powered ship as the mother ship, provided the thermodynamic calculation flow chart, developed the software for the operation simulation system and the developed the assessment system and the equipment management system. This software can simulate the operation process and carry out the numerical calculation. It is good for the purpose of training students and has great reference value for research.