Advanced Materials Research Vols. 562-564

Abstract: The wheat precise seeding technology is an effective way to increase the production of wheat. Walking precision of the agricultural machinery combined with precise seeders has a directly effect on the accuracy of sowing. The real-time tracking technology has become the main problem in agricultural fields. In this paper, the kinematics model of a mobile robot was established and MATLAB was used to make simulation analysis of Path tracking. The results meet the requirements of the robot path tracking and provide technical support for precision seeding.

Abstract: The complexity of locomotive onboard devices and their coupling relationship are increasing along with the high-speed development of our nation’s railway vehicle technology. By combining diagnostic technique with expert system and using fault trees and rules, a new monitor and diagnosis method has been proposed on the overall view of railway vehicles to enhance the diagnosis accuracy. This research is supported by the National High Technology Research and Development Program ("863" Program) of China, the result of this research has been statically tested on relevant electric locomotives.

Abstract: In several typical battlefield terrains, this paper analyzed the obstacle performance of the micro battlefield robot (MBR)and found out the major parameters. After tested with a prototype robot for many times, the analysis is proved right.

Abstract: Mobile path planning is a focus area and the key to intelligent technologies in robot. As one of the most basic and important topics the problem of mobile robot path planning solve the trouble that the robot avoid obstacles in the environment and how to successfully reach the destination. On the emergence of case that is the robot can not reach the target point and easy to fall into local minimum .This will be optimized by improving the way repulsive field function, When the robot close to the target point, not only the gravity of the gravitational field continue to reduce but also the repulsion of the repulsive force field has also been decreasing. This would solve the problem that when the robot reach the target point but easy to fall into local minimal solution. In traditional artificial potential field method, the target is static, but due to prey (i.e. target) is dynamic in this article, the traditional artificial potential field of gravitational field function is not suitable for the situation discussed. Therefore this paper puts forward a dynamic movement is based on the goal of the gravitational field of new functions.

Abstract: Multi-robot SLAM has become a research hotspot in robot simultaneous localization and mapping (SLAM) in recent years. In this paper, we propose multi-robot exactly sparse extended information filters algorithm (MRESEIF) to solve Multi-robot SLAM problem. MRESEIF algorithm sets the threshold to divide the features which are observed by robots into two parts. One part of features are used on observation update, while the other one are used on robots relocalization. The simulation data shows that MRESEIF algorithm can solve multi-robot SLAM problem effectively, the oberservation update time and motion update time are kept in constant range, and the accuracy of robot poses is perfect.

Abstract: Obstacle avoidance in move control process is a key intelligent technology in robot control. As one of the most basic and important topics the problem of mobile robot path planning solve the trouble that the robot avoid obstacles in the environment and how to successfully reach the destination. This paper introdues the artificial potential field method for robot obstacle avoidance. Then this paper presents the simulation on obstacle avoidance method for multi-robots in move control process. Firstly, the paper introduces simulation on obstacle avoidance method in matlab environment. Second, this paper introduces simulation on obstacle avoidance method in movement process for multi-robots using software Multigen Vega and Multigen Creator to realize. At last, simulation results show the movement process for multi-robots in multiple obstacles. Multi-robots have good obstacle avoidance effect.

Abstract: In order to discuss more convenient the relationship of coating morphology and frictional wear in processing, according to the one correspondence of gray image and actual surface topography, this proposed a method of digital image processing. with binary image of different load F and serial rubbings obtained pits distribution rate T and the optimal range in wear resistance. It calculated fractal dimension D based on the Discrete Fractional Brownian Random Field, summarized the osculating relationship of D and surface topography in frictional wear.

Abstract: To improve the success rate of Soccer Robot Path Planning, artificial potential field is amended, autonomous potential field is presented to solve the path planning problem by analyzing shortcomings of the basic shooting algorithm, the autonomous potential field function centering on the soccer robot is constructed, and the robot’s movement in the new potential field is analyzed, the modified artificial potential field model and autonomous potential field model is contrasted, each vicinal potential energy of the modified artificial potential field model and autonomous potential field model is analyzed. The simulated results demonstrate that this method can optimize the path of a soccer robot, decrease the complexity, enhance the real time capability, perform the shooting action better, and improve the success rate of a soccer robot shooting a goal.

Abstract: In VANETs, each vehicle should obtain an IP address for its identification before connecting to the Internet or getting some information from the Internet. Due to the rapid movement of vehicles, each vehicle must perform a handoff procedure between different access points. To ensure that the transmission of packets is not interrupted, the handoff scheme for VANETs is a key design issue. In view of this, we design a V2V-based fast handoff scheme using IP address passing for VANETs in this thesis.

Abstract: Aiming at the shortcoming of test system used in our country and fulfilling the practical need of the enterprise, this paper advances a new method to test vehicle performance based on virtual instruments, studies and builds a new vehicle performance test system based on virtual instrument technique. This paper develops and applies a series of new critical technologies about signal processing. The test proves that the system offers high accuracy and reliability by use of these key technologies and realizes the fully compatible in connection of sensor and second instrument.