Key Engineering Materials Vols. 460-461

Abstract: In order to improve the level of control and management of coke oven, the research on control and management integrated system is carried out. In modern advanced control system of coke oven, the control scheme of feedback combined with feed-forward, and control merged with management is widely used. The integrated control and management system of coke oven is introduced systematically, including the system model, production planning and management, heating control system, the model and method of evaluating temperature, intelligent combustion control and the pressure control gas collector of coke oven. It is pointed out that the integration of control and management is the developing orientation of coke oven control system.

Abstract: Green manufacturing is an effective way of realizing the sustainable development strategy. From the view of evolution of production chain and goods value, energy-saving, cleaner production and green manufacturing of iron and steel industry is discussed and the importance of system optimization of steel manufacturing process is stressed. Connotation of green manufacturing for the iron and steel was explained, the function of steel production process for green manufacturing was discussed and the content system of implementation of green manufacturing for the iron and steel enterprise was established. Finally the steel production process was optimized. The function of iron and steel manufacturing procedure are broaden-manufacturing function of steel product, function of energy conversion and function of waste recycling, which will enhance enterprise’s competitiveness and sustainability.

Abstract: It is difficult to do the fault diagnosis on the modern car engines which have high technology and complex structures. In this study, a case-based-reasoning (CBR) based automobile engine intelligent fault diagnosis system was proposed against this problem. The system’s structure and its mechanism of fault diagnosis were introduced. The key techniques to implement the system were analyzed, including the case establishment, the case search, the case learning and the maintenance of case library. The proposed system gave a new way to establish an efficient automobile engine fault diagnosis system.

Abstract: To improve the fidelity of the motion cueing in the flight simulator, an improved adaptive motion drive algorithm was presented. In this algorithm, the motion limits of single degree of freedom, which calculate according to the Stewart platform kinematics, was introduced in to reduce the possibility of actuators exceeding theirs motion limits. So the algorithm parameters can be tuned more “open up” to improve the fidelity of motion cueing. The improved motion drive algorithm was verified in the airplane takeoff and landing. The results show that the algorithm can improve the fidelity when the platform has more available motion space; and can avoid exceeding motion limits when the platform has small motion space.

Abstract: The observation of scanning electron microscope (SEM) showed that a tibia bone is a kind of bioceramic composite consisting of hydroxyapatite layers and collagen protein matrix. All the hydroxyapatite layers are parallel with the surface of the bone and consist of numerous hydroxyapatite sheets. The observation also showed there is a kind of intercrossed microstructure of the hydroxyapatite sheets. In which the hydroxyapatite sheets in an arbitrary hydroxyapatite layer make a large intercrossed angle with the hydroxyapatite sheets in its adjacent hydroxyapatite layers. The maximum pullout force of the intercrossed microstructure, which is closely related to the fracture toughness of the bone, was investigated and compared with that of the parallel microstructure of the sheets through their representative models. Result indicated that the maximum pullout force of the intercrossed microstructure is markedly larger than that of the parallel microstructure.

Abstract: Scanning electron microscope (SEM) observation on a mature shankbone shows that the bone is a kind of bioceramic composite consisting of hydroxyapatite sheets and collagen protein matrix. The observation also shows that there are many holes in the bone and that the hydroxyapatite sheets near by these holes helicoidally round these holes forming a kind of helicoidally-rounded-hole microstructure (HRHM). The maximum pullout force of the HRHM is investigated and compared with that of non-helicoidally-rounded-hole microstructure (NHRHM). It shows that the HRHM could markedly increase the maximum pullout force of the hydroxyapatite sheets compared to the NHRHM and therefore enhance the fracture toughness of the bone.

Abstract: Sustainable development is a basic national strategy. According to the internal demand of this strategy of sustainable development, this paper illustrates the influences of developing green materials to traditional system of accounting scientifically, these influences include need of green conception, adding the assets of natural resource and introducing the evaluation system with a method of Data Envelopment Analysis based on data of accounting for packaging enterprises. The aim of these researchs will be references for evaluating the economic effectiveness of resources invested in developing green materials for packaging enterprises.

Abstract: This paper presents an empirical study the factors that influence financial performance of enterprises’ industrial diversification. The method of empirical analysis is comparing the good performance diversified companies with the bad to test which factor affects the financial performance of industrial diversification significantly. Basing on the theoretical analysis, we selected variables that measure corporate governance, diversification strategy, and enterprise management. We ran logistic regression with the data from Chinese listed companies. The result shows that more meetings of the board of directors, less unrelated diversification degree, higher total assets turnover and stronger ability to obtain operating cash inflow will increase the financial performance of enterprises’ industrial diversification.

Abstract: The main objective of this paper is to classify four kinds of automobile lubricant by near-infrared (NIR) spectral technology and to observe whether NIR spectroscopy could be used for predicting water content. Principle component analysis (PCA) was applied to reduce the information from the spectral data and first two PCs were used to cluster the samples. Partial least square (PLS), least square support vector machine (LS-SVM), and Gaussian processes classification (GPC) were employed to develop prediction models. There were 120 samples for training set and test set. Two LS-SVM models with first five PCs and first six PCs were built, respectively, and accuracy of the model with five PCs is adequate with less calculation. The results from the experiment indicate that the LS-SVM model outperforms the PLS model and GPC model outperforms the LS-SVM model.

Abstract: Currently, the shortage of engineering talent and quality of engineering education is a common problem all over the world. CDIO is a new engineering education concept and implementation of systems, with good prospects for the development and popularization. Therefore, this paper research and implement education programs Information Platform System (EPIPS). The system, based on CDIO engineering education, develop education plan and set up the architecture to the course of three projects, and it is based on Rich Internet Application (RIA) that can provide students rich learning experience. The result indicates that students can acquire graphical education plan based on CDIO friendly. In this paper, system architecture, the algorithm of traversing education plan and key techniques are introduced. Now, the system is running in Heilongjiang Institute of Science and Technology, and the ability of CDIO has been significantly improved, including of Students Engineering practical, the sense of teamwork.