Advanced Materials Research Vols. 945-949

Abstract: A switching control of uncertain switched fuzzy systems is presented. In this model, each subsystem of switched system is an uncertain fuzzy system. Using Multiple Lyapunov function method and switching technique, the relevant closed-loop system is asymptotically stable for all allowable uncertainties. Moreover, switching strategy achieving system global asymptotic stability of the uncertain switched fuzzy system is given. The main condition is given in form of LMI which are more solvable. A simulation shows the feasibility and the effectiveness of the method.

Abstract: In order to test the parking brake performance of in-use vehicle, in this research, we designed a set of automated test system which could calculate the parking brake performance. The automated test system which was composed of four parts: vehicles weighing device, automatic traction gear, force cell, and intelligent control unit would calculate the braking force based on the traction force and the total mass of the vehicle. The results indicate that this test equipment is found to be convenient application, small floor coverage and reliable.

Abstract: This paper focus on the features of half power saving in city road lighting LED retrofits , presences a light control and time-lapse switch LED lights control scheme, use photoresistor, 555 time base circuit and CD4060 binary counter, realized the control circuit design. The experimental results show that the proposed scheme in this paper is simple, practical and reliable.

Abstract: Double tank level control system is the combined control with the host computer and basic instrument, and it realizes the communicative function through monitoring and management. The object of this topic is mainly on double-tank system, then gets the theoretical parameters PID through measuring the characteristic curves of the water level, and finally use MCGS configuration software on PC, for further interaction interface to the parameters tuning of double-holding water tank system and to set the parameters. After reaching the expected target, on the base of routine control PID, we can improve the system function by forming the double loop system and control the liquid level of the water bank better. The two tank liquid level control is made as the core control system by computer and as one kind of fashionable trends.

Abstract: With respect to the permanent magnet synchronous generator, electrical excitation synchronous generator (EESG) can control excitation and its price does not fluctuate with the rare earth materials market, so it has been applied widely. This paper introduces the converter which controls power on excitation instead of the traditional vector control technology. This system has a simple hardware structure, high system efficiency. The simulation results demonstrate the correctness of the proposed converter control strategy.

Abstract: The test rig for hydro-pneumatic converter used in straddle type monorail vehicles was researched, and its electro-pneumatic proportional control system was set up and simulated based on AMESim/Simulink. Compared fuzzy-PID (Proportion Integral Derivative) controller with PID controller through fuzzy logic tool box in Simulink, the results indicate that, this electro-pneumatic proportional control system can meet design requirements better, and fuzzy-PID controller has higher accuracy and stability than PID controller.

Abstract: A controlling system with 8 inputs and 8 outputs of washroom automatic flushing is designed. The system is composed of the proximity switch sensor as test part, electromagnetic valve as actuator and STC89C52RC single-chip microcomputer as controlling core. Also the hardware circuit and corresponding programs are presented in this paper. By simulation, testing and application of the actual circuit, it confirms that the system with high sensitivity, low cost and good extended properties is of a very good application prospect.

Abstract: Scientific and technological research for improving raw material gas quality test conducted using redundant control technology, build a platform-based control system hardware and software redundancy Siemens S7-300PLC soft environment, including system design, working principle, hardware and software design. Realization of loading and unloading, gasification combustion, feeding, excessive combustible gas containing oxygen treatment, processing and gas shutdown emptying, composition and temperature computing gasification process control, equipment control, remote centralized monitoring, data processing and management data communications and surveillance and other important parts of pellet fuel from biomass gasification to purify the whole process automation and control, equipment design and process design for a living material gas industrialization process system provides a strong basis.

Abstract: In order to avoid the substation staffs mistakenly entering charged interval and resulting in personal safety accidents, combined with the actual situation of substation maintenance work, we designed an automatic warning system. Each component was given the functions and basic principles .The system used a variety of sensors to detect people approaching charged region to improve the reliability of warning. And it can communicate with the maintenance management computers via RS485.

Abstract: In this paper, the method for NXP's JN5168 wireless microcontroller chip to create a wireless lighting network is first introduced. Meanwhile, this paper will show the JenNet-IP technology features, wireless networking and network flow. After that, this article will discuss the design of wireless communication nodes using JN5168, as well as the wireless communication network focused on LED lighting control. The advantages of JenNet-IP technology against ZigBee will also be represented in this paper.