Advanced Materials Research Vols. 846-847

Abstract: Aimed at the problems existed in remote monitoring system of shearer, this paper put forward a new remote control strategy of shearer based on virtual reality (VR) to achieve control visualization and automation of equipment in coal face. Firstly, after analysed the control demands of shearer in the automatic coal face, an overall scheme of coal mining machine virtual control system was put forward, its working principle and main composition were introduced also. Secondly, the methods and procedures for VR-based remote control system for shearer using Quest3D, such as virtual control platform, logic control, data transmission and communication were described. Finally, the experiments were carried out to validate and evaluate those technologies. The experimental result show that the VR techniques were the effective and efficient way to carry out remote control of mining equipment and to improve safety and reliability of production in coal mine.

Abstract: To saves water resources and low carbon environmental, we have designed a smart monitoring watering system based on power carrier and wireless communications, the system schema is divided into three layer, background server control the concentrated controller through wireless core network; each concentrated controller controls watering system through power carrier network; watering systems as the terminal access points of The Internet of Things , directly control the location regional's temperature, humidity and the soil situation, thereby achieved unmanned unattended, automatically watering. System integrates technology as wireless communications, power line carrier, single-chip microcomputer , application in LCD and so on, through hardware and software design, realizes data storage, the node information query, node failures and cable guard alarm function. Experimental results show that the overall system has low power consumption, high reliability, strong anti-jamming ability, so that it can better meet site's needs.

Abstract: In order to save energy and to implement the intelligent of the classroom management, we design a set of classroom intelligent management control system based on Wifi and Zigbee communication, for the application of embedded technology, network technology, remote control technology, and the Android mobile phone software platform, realize the classroom automatic lighting, manual and computer remote control, mobile control management control and other a variety of ways. Classroom nodes subsystems curtain automatic control, Light to adjust, the human body detection, fire alarm and classroom information real-time query functions, the software system provides a platform for information broadcasting and feedback, so that make the campus the classroom management intellectualization, humanized, both saving energy and reducing the workload of the administrator.

Abstract: The efficient temperature control of variable air volume (VAV) air-conditioning system can greatly reduce the energy consumption. In order to due with system constraints and uncertainties, and guarantee the closed-loop stability, an off-line min-max robust model predictive control algorithm is presented for the temperature control of a VAV system. As the first-order-plus-time-delay model of system is described by a polyhedral described uncertain model, the off-line ellipsoidal invariant set based robust MPC algorithm is employed for the controller design. Simulation results show efficiency of the proposed control algorithm implemented in the temperature control of a VAV system, which can enhance robustness, and satisfy the constraints.

Abstract: According to coupling phenomenon of reactive power when a power plant is connected to another power plant, reactive power can not be to achieve a reasonable distribution of each power plant,which causes the problem of voltage control. This paper describes the methods of adjusting the parameters of automatic voltage control (AVC) to realize the coordinated control between power plants connected, which makes the voltage of power system to meet the demand of power grid operation.

Abstract: Aimed at the shortage water resources and demand for water-saving irrigation in our country, this paper puts forward an irrigation control system realization method by using wireless sensor network on the basis of Zigbee wireless network. And then, this paper shows the specific implementation details. Through the preliminary experiments, it has been proved that this system can accurately obtain data from network node. Besides, the system is stable so that it has certain application value.

Abstract: Considering the simple interconnected power systems, the finite-time stable control problem is studied. A nonlinear feedback control method with dynamic active compensation is proposed, which makes the systems achieves approximately the finite-time stable control. Meantime, in order to solve the problem of system uncertainty and unmeasurable states, an extended state observer is designed. Simulation results show the effectiveness of the control method.

Abstract: Smart home generally creates a communication network for the family to provide necessary information accesses in the home network operating system. Under the controls of the hardware and the corresponding implemental agency, all the home network appliances control and monitoring are achieved. As the smart home becomes more advanced and complex, its urgent to search for an effective management model. In this paper, we propose a compatible smart home system management model and make some future development assumptions.

Abstract: This paper presented a new method based on the Fuzzy self - adaptive PID for BLDCM. This method overcomes some defects of the traditional PID control. Such as lower control precision and worse anti - jamming performance. It dynamic model of BLDCM was built, and then design method for TS fuzzy PID model is given, At last, it compared simulation results of PID control method with TS Fuzzy PID control method. The results show that the TS Fuzzy PID control method has more excellent dynamic antistatic performances, as well as anti-jamming performance. The experiment shows that TS fuzzy PID control has the stronger adaptability robustness and transplant.

Abstract: For the defects of the parameter tuning and optimization of the PID controller uses an improved Particle Swarm Optimization (IPSO) algorithm to apply on the dual closedloop DC speed tuning system and adjust PID controller parameters online. The optimization result of adopting step response of the improved PSO algorithm is analyzed. It shows that using the improved PSO algorithm will obtain better dynamic performance, follow faster and more robustness than the traditional engineering design method. It provides a good performance of practical method for PID parameters optimization.