Applied Mechanics and Materials Vols. 341-342

Abstract: To meet the approval test need of certain UAV, make up the shortfall of some test difficult to implement, according to the actual demand of the shooting range, the function needs of cruise UAV simulation system is presented based on HLA, the simulation environment is introduced, such as circulating system and supporting conditions. The implementing program of software & hardware and operation process of system is also designed, which has been applied to the development of certain UAV simulation system. Practical application indicated that the design is reasonable, easy to operate, and can meet the need of UAV weapon system simulation.Keywords: HLA; cruise UAV; weapon system; simulation; construction

Abstract: Global navigation satellite system (GNSS)-like the Global Positioning System (GPS) and the future Chinese Beidou system-can deliver very good position estimates under optimum conditions. However, especially in critical positioning scenarios like urban canyons or indoor environments the performance loss would be very high or GNSS based positioning is even not possible. Based on the concept of Cooperative Positioning in acquiring real-time positioning information of mobile robots, GNSS Peer-to-Peer Cooperative Positioning (P2P-CP) technology is proposed to overcome the shortage of GNSS positioning. Terrestrial ranging and communication modular are equipped with GNSS receivers to construct real-time CP network. The terrestrial ranging and communication modular respectively used for distance measurement and communication between nearby GNSS receivers, distributed algorithms are applied to fuse pseudorange and neighbors nodes distance to calculate the nodes position. Current research results of GNSS CP show that this new positioning strategy gets equal or better precision with less time cost compared with Assisted GNSS (AGNSS).

Abstract: Air quality monitoring is an important application in Internet Of Things (IOT). In this paper, a design and implementation scheme of air quality monitoring system for industrial parks has been put forward. After the introduction of its applications, an integral project is presented, including system architecture, system functions and system deployment. The paper finally comes to a conclusion that the operation of the system deployed in Qujing modern industrial park is proved stable and reliable.

Abstract: Compressed natural gas (CNG) automobile is an emerging new energy car. How to control gas injection is the key technology of CNG electronic control system. At present, the control based on the MAP graph is used usually, but this control method has some shortages, for example larger data, poor adaptive capacity and difficulties in data updating. BP neural network control has adaptive and self-learning, nonlinear processing ability and high generalization, and faults tolerant ability in processing information. In this paper, BP neural network is used to control natural gas injection in order to solve the shortage of the MAP picture control. Simulation experiment shows thefeasibility and advantage of this method.

Abstract: MLAT (Multilateration) is becoming one of the leading techniques in the airport surveillance. It locates the positions of aircrafts by the TDOAs (Time Difference of Arrivals) of signal from the aircraft to the different remote stations. In views of the influence from the geometric relation and the clock error among different stations, an improved simulation is proposed to estimate the measurement error for the optimal tracking. The model of simulation takes both the GDOP (Geometric Dilution of Precision) and TOA (Time of Arrival) error into consideration. Experiment results show that compared with the traditional simulation method, the improved simulation is more accurate and is able to be used in the practical application.

Abstract: Traditional contacting measure method can easily cause cigarette filter rod distortion and needs long measure time. Its measure precision is difficult to satisfy practice demand and it cannot implement online measure. In order to overcome these shortages, imaging measure technology is used to measure cigarette filter rod parameters. Firstly, preprocessing filtering is operated on the image acquired from imaging measure system. Then binary cigarette filter rod target image is obtained through Otsu segmentation method. After that target feature extraction is processed and correlative parameters of cigarette filter rod are gained. Parameters measuring absolute error for two images which are acquired from the same cigarette filter rod under different illumination is 0.683%. Experiment proves that the proposed method can rapidly and correctly measure cigarette filter rod and has good robust and adaptability. It can effectively measure cigarette filter rod in practice.

Abstract: The purpose of this study is to design a flamethrower robot that works on power transmission lines. Composed of wheels and arms, the robot is able to move on the power transmission lines and also can get rid of the foreign matter like kites hanging on the line. Geometric design of the mechanism is discussed in detail and the critical problem of slide occurred between the line and the wheel is solved in this study. Also, the kinematics and the work space of the arm fixed on the robot are researched to ensure that the foreign matter hanging on the line can be cleared wherever it is. The effectiveness of the proposed concept is proved by experiments performed in a simulated line environment.

Abstract: This paper combines the related developed technology and current functional requirements, show you a multifunction household services given trajectory transfer robot with low cost ,which is designed for the elderly and wreck. And the R&D of this robot has been finished according to the status of domestic and international development

Abstract: This paper took wireless sensor network (WSN) as the data transmission way and used the LabVIEW platform, and design multifunctional virtual instrument system with signal acquisition, demonstration, analysis, storage and the historical data inquiry to implement remote operation of gas monitoring.In terms of hardware design, the wireless sensor nodes and radio frequency circuit were mainly designed, and in terms of software design, the wireless communication procedures and LabVIEW program were mainly designed. The data of measured objects were collected in real time by wireless sensor nodes, and were sent to wireless main nodes through the ZigBee wireless technology. The wireless main nodes received data of all wireless sensor nodes, and the data are encapsulated into USB package and submitted to PC, then were processed through LabVIEW platform. The system was characterized with its low power consumption, high precision, simple design, convenient operation, friendly interface and good reliability.

Abstract: Model checking is an important method to verify state machine based system. In this paper, we using PAT, a novel and powerful model checking tool, to verify the logic module of flight control software, which is public available. Conclusions are drawn from the verification and these are valuable for similar researches.