Advanced Materials Research Vols. 1030-1032

Abstract: Intelligent greenhouse cultivation and management is one of the most important technologies for continuous production of agricultural products. This article deals with the development history, status, key technologies and trend of greenhouse intelligent monitoring system£¬ makes analysis on the existent problems and developing trend so as to provide reference for the growth of China's facility agriculture intellectualization£®

Abstract: GPS (Global Positioning System) technology is the GPS car navigation technology with the rapid development of embedded technology, the automotive industry and the gradual rise of the market based on various types of GPS navigation products are more technically larger gap, a variety of GPS good and bad, regardless of the quality of the product. This paper analyzes the current status of the development of domestic and foreign car navigation systems, GPS car navigation system for the discussion in order to build a $ 3C2440 embedded development board as the core hardware system, built with WinCE platform for car navigation software for the system, using EVC (Embedded Visual C++) and eSuperMap software tools designed to be able to search the electronic navigation maps for route intelligent navigation software system.

Abstract: This paper puts forward an on-line monitoring system of power transformer which could online collect multiple physical parameters of power transformer at the same time without using electricity sensor. In this case, the sensor will not affected by the strong electric field, magnetic field and electromagnetic wave. The system analysis the running state of power transformer according to physical parameters accurately, as current technology can only measure single physical parameters, it can solve this problem that the measurement results lack of association. Moreover, the system improves the reliability of power transformer operation and security of online measurement, ensuring the safe operation of power system.

Abstract: We proposed an intelligent self-adaptive control method based on RBFNN in this paper, dynamic identification model of nonlinear control system is built based on radial basis neural network, mixed intelligent method of dynamic self-adaptive internal model control is developed by adjusting online for nonlinear control system. We applied the intelligent self-adaptive control method to nonlinear hydraulic control, simulation shows the dynamic characteristic is greatly improved by the intelligent control strategy for nonlinear control system, good tracking and control effect is reached in condition of high frequency response, and the intelligent control method has higher precision, smaller overshoot and stronger robustness compared with common PID control, BPNN control and fuzzy control. It provides a new control method for nonlinear control system.

Abstract: Helicopter is a strong coupling and instability nonlinear system, of which the inherent flight qualities are poor. Helicopter model following control technology can make four control channels of helicopter with excellent tracking and decoupling characteristics. This paper applied the control method of model following control combining eigenststructure assignment to the helicopter control system. The results of simulation show that the helicopter flight qualities meet the requirements of ADS-33, the helicopter has excellent tracking and decoupling characteristics. Thus it proves that this control method is of great effectiveness.

Abstract: It proposes a solution of the online monitoring and alarm system of the galvanized steel wire’s weight. This system can achieve stable and efficient real-time data acquisition, waveform display, and automatic alarm as soon as overrun. It also develops the functions of data management which is based on SQL Server. The system will provide the steel wire galvanizing production a comprehensive service of online monitoring, alarm and data management and so on.

Abstract: s. This thesis introduces core technology and methods of structuring the dynamic industrial equipment management system, which are technology foundation of building the system.

Abstract: The drive motor as the only drive of pure electric vehicles, its performance and its controlling technology have important impact on the performance of pure electric vehicles, So research of the drive motor is the focus of the pure electric vehicle technology research.This article expound the current conditions of the drive motor ,Through the comparative research, that provide the basis for selection and matching of parameters of the drive motor under the conditions of meeting design goals. In combination with the future development trends of pure electric vehicle, to put forward the key research contents of the future of drive motor based on pure electric vehicles

Abstract: With the rapid development of Wireless Sensor Networks (WSN) and embedded technique, especially the widely application of Internet of Things technology, more and more attention has been paid in greenhouse monitor field. The aims design of system depends significantly on the application, and it must consider factors such as temperature, humidity, light intensity, co2 concentration and other environmental factors. These sensors are equipped with wireless interfaces with which they can communicate with one another to form a network. All the environment factor information gathers by PC and embedded device, and people also can control them through Graphical User Interface (GUI).

Abstract: Instantaneous signal and alternating signals are as driven signals, using PID control, change control coefficient P's size, The stopping time of impact force under instantaneous signal with the piezoelectric ceramic content increases, the stopping time is reduced; after applying active control, the stopping is shorter than that is not applied. After applying the alternating signal to force the cantilever beam, the driving effect of the ceramic sheet is located in a cantilever position A, B, C, the effect of C under controlling is at best. The effect of two driven ceramic sheets is better than that of three driven ceramic sheets, the best control position is B+C.