Applied Mechanics and Materials Vols. 63-64

Abstract: Array bound is a concealed security defect. It generally cannot be found in the compiling progress, so it is extremely easy to cause a system crash. In this paper, we describe a static array bound checker, which concentrates on the defect of interprocedural array bound. This method is achieved by using the technology of static analysis, interval arithmetic and procedure summary, so it can detect the faults before the progress running. We finally give an experiment to verify the effectiveness and the high precision of this method. The method has been applied to practical projects.

Abstract: Through the research on the network survivability, this paper proposes a website protection strategy based on network survivability from the angle of fine management, in which the paper makes the website server to ensure uninterrupted service under attack and improve the stability of network operation. At the same time this paper proposes a framework for website protection from the perspective of data protection and file protection in order to achieve network survivability. Finally, in accordance with the proposed protection system architecture and strategy, this paper builds the network environment and emulation of illegal attacks, the experiment results show that this strategy can protect the stable operation of the website, and the survivability of website can be reflected.

Abstract: Incentive is an effective way for information sharing mechanism in a supply chain. All participants will obtain advantages during information sharing incentive. Based on the given cost and weights of participants, an incentive model is built to analyze profit and cost in the supply chain of chained drug stores. Relationship between information sharing effort and cost of the headquarter is proposed in the conclusion.

Abstract: Container Terminal Scheduling System is a random, dynamic, nonlinear complex systems. How to schedule in order to achieve MES seamless connectivity for management system and control system, which is reseach focus of MES currently. Aiming at the production process and production management features for container terminal, a thorough research on CIMS of container terminal enterprise is taken, the relationships of information exchange that among the plan layer, the execution layer and control layer are analyzed. On the basis of control theory and system engineering theory, and viewpoint of process control, a closed MES control system is build. It is established step by step to achieve seamless integration MES by intelligent modeling and control compensation of scheduling. A new and original way for realizing accurate and transparency management in the production process and production optimization is provided.

Abstract: In order to improve the motion quality of the search-rescue robot, the new hexapod robot system is proposed in this paper. Based on the completed system hardware design and implementing scheme, embedded system software initialization design is realized. Through the improved kinematics analysis method, a simulation model of hexapod search-rescue robot is established in ADAMS. The experiment result shows that the whole robot is flexible and powerful.

Abstract: The search and rescue robot has the characteristics of quadruped walking machine. A simulation model of quadruped search-rescue robot is established in ADAMS, and the kinetics equation is analyzed using Lagrange theory. The walking characteristics and stability evaluation of the system are observed using the simulation model established. Simulation results show that the walking stability of the system is closed related to the length of stride.

Abstract: This paper analyzes the principle of Viterbi algorithm which can be used in the norm of the mobile communication system. Then a new Viterbi decoding scheme of (2, 1, 7) convolutional code is presented for FPGA implementation. To take advantage of the FPGA, a new branch weight algorithm and uniform state weight memories is used. At last, a new decoding circuit which can work on 35MHz and can achieve 120 kbs in decoding speed was designed. To use the design of survival path exchange register module, it can decrease the power consumption and the RAM size.

Abstract: This paper describes Freescale company’s DSP device MC56F8013 implementation of a control method for sensorless BLDC motor, which is according to fuzzy neural network. The inductance of stator core varies according to the variation of rotor position, and the rotor position can be estimated with the variation of current response caused by six direction voltage vectors. Then use fuzzy neural network PI control method to optimize the dynamic performance, accelerate the rotor to a certain speed, and switch to EMF mode. The experiment results show that the proposed method can have fast response, strong robustness and superior performances.

Abstract: To achieve human face identification, this paper adopts the method of geometric feature extraction and the enlargement of image interpolation on the basis of the completion of face detection. First of all, the input digital image will be normalized to reduce the complexity of the image, and then the feature of human face will be extract. With the feature information extracted, we can construct the feature vector and assign different weights to different feature vector. Weight is interpreted as the EXP obtained after a large amount of training experience is gained. Finally, to get the similarity of picture, the bilinear interpolation method is adopted on the basis of the nearest interpolation. Thus, we will get the results of face identification according to the similarity quality. Through the development and implementation of practical programming, this paper proves the feasibility of such method.

Abstract: For avoiding false-alarm and diagnosing intermittent fault, based on the relationship analysis between intermittent fault and false-alarm, the intermittent fault diagnosis model of power system based on HMM (Hidden Markov Model)-SVM (Support Vector Machine) characteristics was constructed in this paper. By means of this model, the intermittent fault diagnosis procedure of power system based on HMM-SVM characteristics was built. Finally, the intermittent fault diagnosis simulation system of power system based on HMM-SVM characteristics was demonstrated and validated by QUEST software. The result showed that the proposed method was available, and can provided guidance for avoiding false-alarm and diagnosing intermittent fault, and support for stable performance in power system.