Advanced Materials Research Vols. 846-847

Abstract: In this paper the working principle of cotton foreign fibers detecting and clearing on line device paving and loosing part is described, and the mathematical model of the relationship between line speed is established, and paving part control system that is suitable for this device has been designed on this basis.

Abstract: This paper considers the problem of robust admissibility analysis of uncertain discrete-time switched linear singular systems for arbitrary switching laws. The parameter uncertainties are assumed to be of linear fractional form. By using the switched Lyapunov function approach, some new sufficient conditions ensuring such systems to be admissible for arbitrary switching laws are presented in terms of linear matrix inequalities (LMIs). Example is provided to demonstrate the effectiveness of the obtained results

Abstract: In order to solve the deficiency that traditional user-defined indicator does not consider the internal structure of multivariable decentralized controller, we propose the assessment method that based on improved user-specified benchmark. In the method, the open-loop delay and interference of traditional user-specified benchmark replaced by the effective partially closed-loop delay and interference correspondingly. New right diagonal interactor matrix replaces the unit interactor matrix, which greatly simplifies the complexity of solving performance indicators. The experimental results prove that the method can assess decentralized control system with internal interference and is effective for performance assessment

Abstract: The internet of things (IoT) is considered as one of the most important supporting technologies for the smart grid, which is considered as one of the most important application areas of the IoT. In the electric IoT, with the development of electric vehicles (EVs), effectively modeling road network becomes more and more important. In this paper, a road network model which captures the real-life road conditions better than previous models is introduced. Moreover, an awaiting time in the queue is taken into consideration before EVs being charged. Compared with minimum distance standard, the proposed time minimum standard and Dijkstra algorithm are adopted to track the path of the EVs. Finally, a velocity limitation of EV is considered in the simulations to embody the real-life road network.

Abstract: To monitor and control the pump units of the oil pipeline, the system is expected to not only have a high instantaneity and control precision of measurement, but also keep highly reliable and stable in horrible and changeable environments. This study, taking the CompactRIO module by NI Company as the data collection control unit of system, introduces the design and realization of the monitoring system of the pump units of oil pipelines; besides, in the experiment on the system, ideal findings are obtained.

Abstract: With the DCS of Zhejiang SUPCON as a platform, in view of the characteristics of the Electric heating jacketed boiler temperature are large inertia, large delay, the effect of the traditional PID control is not ideal, a fuzzy predictive control algorithm with nonlinear scaling factors is proposed, which combines the advantages of predictive functional control is not strict with prediction model, due to the introduction of nonlinear scaling factors, can improve the sensitivity of fuzzy controller effectively. Algorithm using Advan Trol-Pro configuration software to implemented. Through the application of the Electric heating jacketed boiler temperature control system which indicates that fuzzy predictive functional control based on DCS is feasible, it also can improve the system response speed, and realize the accuracy of the system stability and perfect controlling effect.

Abstract: Considering the characteristics of UHVDC(Ultra High Voltage Direct Current) transmission in HMI (Human Machine Interface), this paper discusses the engineering design plan of HMI software for UHVDC transmission project in detail. Especially speaking, this paper focuses on how to carry out robotics solutions which include automatic interface generation, auto correlation between the interface and database data, and the function of system error correction, etc. Finally, an engineering solution based on data driven project is presented for the future domains of DC transmission HMI.

Abstract: For the fuzzy controller performance optimization, several optimization strategies on the membership function, control rules and scaling factors respectively are analyzed and compared, on the basis, the sigmoid function is introduced to replace the linear factor so to optimize the conventional fuzzy controller. The theoretical analysis is carried from mapping relations of sigmoid scaling factor and relations between it and the other parameters. It is shown that sigmoid scaling factor can get the same control effect to adjusting control rules or membership function. It can ensure the dynamic performance and at the same time effectively reduce the steady-state error, but the adjusting parameter is far less than the other strategies, it is easy and feasible.

Abstract: This paper analyzes CNC machine tools machining error sources, put forward a kind of on-line monitoring technology of CNC machine tools machining accuracy based on online neural network. Through the establishment of CNC machine tools condition monitoring platform, collection sensor signal of the key components of CNC machine tools, using time domain and frequency domain method of the original signal processing, extract the characteristic related to machining accuracy change, input to the neural network, identification the changes of machining accuracy. The experimental results show that, the on-line monitoring technology based on neural network, can identify the changes of machining accuracy.

Abstract: The traditional lighting control system has the problem that short communication distance, slow transmission speed and high error rat. This paper presents and designs an intelligent lighting control system based on CAN bus. Describing the design framework of intelligent lighting system, it focuses on the realization of CAN communication module of SJA1000. The intelligent lighting control system based on CAN bus is a distributed intelligent control system. Compared with the traditional lighting control system, it overcomes the effect of relatively scattered control and disadvantages of poor management, poor real-time and low degree of automation.