Applied Mechanics and Materials Vols. 313-314

Abstract: Becauseof the existence of the nonlinear load, rectifier circuit in the work will produce harmonic. It analyzed the infection of the harmonicto the circuit and analyzed the quantity of differ-harmonic in theoutput from three-phase bridge rectification circuit and reversing double-starrectification circuit with equilibrium reactor.This can guide us to research how to suppress harmonic.

Abstract: A parallel hybrid power unit model has been established on Matlab/Simulink platform. A torque control strategy is put forward in this paper and four working conditions which include starting, acceleration, adding load and unloading are studied. The results of simulation indicates that the control strategy is feasible.

Abstract: In this paper, a novel method based on cubature Kalman filter (CKF) and strong tracking filter (STF) has been proposed for nonlinear state estimation problem. The proposed method is named as strong tracking cubature Kalman filter (STCKF). In the STCKF, a scaling factor derived from STF is added and it can be tuned online to adjust the filtering gain accordingly. Simulation results indicate STCKF outperforms over EKF and CKF in state estimation accuracy.

Abstract: To study the dynamic characteristics of belt conveyor during belt rupture, the finite element dynamic model of belt conveyor was built. Dynamic simulation system of DTII type belt conveyor was established with AMESim. The simulation parameters were determined by DTII type belt conveyor design manual and the dynamic model. The speed, displacement of break point and mechanic characteristic carve in break moment were obtained. According to the result, the optimal capture time was confirmed.It provides the theoretical basis for the design of belt rupture equipment.

Abstract: Study the lateral stability control method with regenerative braking for 4WID electrical vehicle whiling braking, an integrated control strategy with primary objective to enhance vehicle lateral stability was proposed, by which the regenerative braking, hydraulic braking, ABS and direct yaw moment control system were coordinated effectively. Simulation results on split-μ road indicated that compared with traditional ABS, the integrated control method can improve the lateral stability of vehicle at urgent braking condition, and increase the mileage of electric vehicles.

Abstract: The use of Aluminum castings parts in the automotive industry has increased dramatically over the past few decades. The driving force for this increased use is vehicle weight reduction for improved performance. In many cases the mechanical properties of the cast aluminum parts are superior to those of the cast iron or wrought steel parts being used.This paper proposes the computer simulation of the sand casting of Aluminum Plate. It aims to study the behavior of fluid flow during mould filling and solidification and to optimize the process parameters, which help to predict and control casting defects such as gas porosity and shrinkage porosity. Here an attempt is being made to model and simulate the casting process using the AutoCAST software. The technological as well as practical aspects of using casting software are illustrated with an industrial case study.

Abstract: Five-axis linkage CNC Machining CenterXH756 has five axis -- X, Y, Z, A, B, can achieve five axis linkage processing function, is the most ideal equipment of processing space curve CAM, cylindrical CAM and die. Its numerical control system is M520 of Mitsubishi of Japan. XH756 is most advanced CNC processing equipment with high precision in China now.

Abstract: A compromise design approach for nonlinear autopilot for tactical missile is detailed from an application point of view. The nonlinear actuator is treated by description function. The damping loop and acceleration loop is dealt with using separation design strategy, respectively. The feasibility and correctness of this proposed method is validated by simulation results.

Abstract: The low yield rate in display panel production that results from imperfect Indium Tin Oxide layer deposition is well known. In this experiment a 6^th Generation TFT-LCD is used to investigate an ultra-precise method for the removal of Indium Tin Oxide (ITO) thin film microstructure from defective display panels. The complete removal of the ITO layer makes it possible to put these panels back into the production line for reuse with a considerable reduction of both waste and production cost. This process, which involves the removal of ITO layer substructure by means of an electro-chemical etching process, is of major interest to the optoelectronics semiconductor industry. The ITO film can be removed completely by a proper combination of feed rate and electric power. In this electro machining process a high current flow and high feed rate of the display (color filter) achieves complete and efficient removal of the ITO layer. A large diameter cathode virtual rotation circle also corresponds to a higher removal rate. A small cathode end radius effectively improves dregs discharge and is an advantage when associated with a high workpiece feed rate. This precision reuse process for the recycling of defective display screen color filters is presented as an effective tool for use in the screen manufacturing process. The defective Indium Tin Oxide thin-film can be removed easily and cleanly in a short time.

Abstract: Thermoeconomics combines the thermodynamic analysis and economics evaluation, and simultaneously considers the thermodynamics and economics effect of the process of energy conversion in power plant. It becomes the focus of research. This paper mainly discusses the establishment method of the exergy cost equation in thermoeconomics structure theory, at the same time this method also combines with thermoeconomics accounting theory. Through the research, this paper presents a clear, simple, utility exergy cost equation established method. Compared with the chain differential principle, this method has the advantages of a simple form of expression and faster calculation speed. The method is applied to an actual 600MW power plant, established exergy cost equation and obtained the exergy cost for each component.The exergy cost concept is used to evaluate the production performance of the major equipment, to find the reason of production cost growing and direct the thermal power systems exergy optimization.