Advanced Materials Research Vols. 712-715

Abstract: This paper analyzes the concrete mixing station control system problems, put forwards the total design scheme, communication and database configuration, designs the PC management software. Monitoring, introduces user management, basic setting, process parameters, production process monitoring, alarm system, the running task information, material weight measurement; management, focuses on the proportioning management, task management, report management and invoice etc. From the debugging situation, reliable operation, simple operation, convenient maintenance, good results.

Abstract: This paper analyzes the concrete mixing station control system problems, puts forward the total design scheme, and designs the hardware and software of programmable logic controller. In the software project, focusing on the automatic run program, aggregate discharge procedures, two feeding procedures, alarm procedures. The design also uses intermediate temporary storage technology, pressurized water discharge technology. The experiments prove that the system is reliable, simple operation, convenient maintenance, good effect.

Abstract: A novel robust adaptive back-stepping control scheme for attitude maneuver of over-actuated spacecraft system with redundant reaction fly-wheels (RWs) is proposed. The robust adaptive controller based on back-stepping may achieve the high accuracy and speed of the attitude control for the rigid spacecraft with uncertain inertia matrix and bounded external disturbs. The Lyapunov functions are employed to analyze and prove the systems stability, so the fine and accuracy performances are ensured. The numerical simulation results verify the effectiveness and feasibility of the control schemes derived here using the MATLAB/SIMULINK software.

Abstract: Set guided bomb as the study object, we study a new variable structure control (VSC) method based on support vector machines (SVM). The SVM is applied to identify the model of the control system using the principle of Support vector machines regression (SVMR). So, the input of the control system can be obtained from the training directly. The VSC then designed based on this. Simulation results of guidance bomb control system show the effectiveness and feasibility of the VSC based on SVM.

Abstract: Discrete chaotic systems are more difficult to control than continuous chaotic systems. We discuss adaptive control scheme of continuous chaotic systems published in a series of papers, and study on how the convergence factor affects the convergence time and the property of final control strength by mathematical analysis and number simulations. Then we generalize it into discrete systems satisfying certain conditions and provide mathematical proof. The effect of convergence factor is emphasized. Finally, we apply the scheme to two discrete chaotic systems, which verify its effectiveness.

Abstract: A spray control system with PLC was designed to realize the requirement of exhaust gas desulfurization experiment control system in ship. The relevant parameters were changed in manual control, according to the experimental requirements. The flow rate of the spray liquid along with the changing of the exhaust gas amount was changed in the automatic control system. The multi-level control and cascade control was used to adopt the different equipments, in order to obtain the anti-reference function of system. The PLC module was chosen and programs were designed. The relevant parameters were determined through computer simulation. The results showed that computer simulation met the requirement of experiment.

Abstract: The urban pipeline wireless monitoring system is presented based on WSN technology and GPRS so as to solve the existing problem in the operation of urban pipeline networks. Hardware and software design of wireless sensor node and coordinator is given. GPRS module serves as gateway interface between WSN and internet. The collected field data which consist of pressure and flow rate of water, natural gas and heating water is finally transmitted to the control center through internet. The main interface of control center is developed with configuration software which is famous for its direct viewing and easy-to-use. The experimental results indicate that the control center can get real-time field data of pressure and flow rate at any time, sensor nodes collects data accurately, data is transmitted reliably via wireless sensor networks. It has wide field of application with good prospects.

Abstract: Network control systems have been one of the main research focuses in academia as well as in industry for many decades and have become a multidisciplinary area. With these growing research trends, it is important to consolidate the latest knowledge and information to keep up with the research needs. In this paper, we take network time delay and data package dropout into consideration, and propose a DR model based network control system. After theoretical analysis to our system, we do some simulation experiments to validate the efficiency of the proposed system.

Abstract: In accordance with the technical features of large capacity, non-linear and dead time temperature resistance kiln system.a fuzzy predicted coordinated control algorithm is stated .Enhance tracking and anti-inference capabilities of The algorithm. Simulation results indicate that this method is better adaptive to the alteration and improverer the static precise that PID control.

Abstract: According to the temperature control of brazing furnace, a fuzzy B-spline function neural network based on the Particle Swarm Optimization (PSO) algorithm is proposed by using B-spline function as fuzzy membership function and using neural network to realize fuzzy interference, using PSO to completes the network' s weights' learning and training. The result shows the system is validity and feasibility.