In greenhouse production, more than 35% of the energy consumption was spent on greenhouse heating. Most greenhouse environmental control strategy is still static working point, and usually it can not adapt to outdoor weather changes so that the energy consumption in cold climate is enormous. In this...

Teleoperation technology is a very promising direction in the field of robot.Using virtual reality technology to provide feedback to the operator in teleoperation robot system,which help the operator to know the information of work site and improve the work efficiency.we took the Unity3D as virtual reality...

A new algorithm based on endpoints of skeleton is presented to efficiently get the number of fish in this paper. Considering the complexity of underwater environment like lack of light, this paper presents an improved adaptive thresholding method to segment the fish image better. In addition, the object...

Through analysis of basic working principle of crane drum brake, change of friction factor under the influence of relative sliding speed, load and other factors is analyzed. Combined with the static and dynamic braking torque experimental results, the Rigid body and rigid flexible coupling model of drum...

In order to improve the accuracy of the air duct rotating bending fatigue life test, basing on the related standards of aviation ministry and other types of rotary bending fatigue machines tailstock home and abroad, a 4-DOF adjusting device, which can move along X and Y axis in the horizontal plane and...

The traditional video collection program should complete all the design work from the hardware layer to the driver layer and the application layer, which is a large work. It develops a video capture program based on driver model defined in DDK kit with API of general input and output module (GIO), and...

Through the saddle intersection curve analysis, the mathematic model of the saddle-shaped space trajectory was established by matrix equation and interpolation method. For the special saddle-shaped welds of T-joints the automatic welding device is designed for automatic welding of jacketed T-joints,...

The analysis of reform and practice of excellent course of the power system, follow the outstanding project, strengthen the practice of the principle of teaching in ideology, system, teaching contents and methods and improve the quality of teachers made a number of reform and practice, has gained valuable...

In the era of intelligent robots and VR technology, High-precision position technology of indoor space is increasingly important, a variety of ways of high-precision position technology to solve different practical scene problems. Based on the laser TDOF principle, this paper presents a new positioning...

In order to find the best type-reduction algorithm of interval type-2 fuzzy sets with different characteristics, this paper makes a comparative analysis of KM, EKM, IASC and EIASC. Experiments are carried out on three type-2 fuzzy sets to compare the four algorithms.The results show that the four algorithms...

This design introduces an adjustable frequency AC Supply which is used as the excitation source of the metal particle detection sensor. According to different sine table, STC15W4K16S4 microcontroller outputs corresponding frequency SPWM control signals. These signals are amplified by the MOSFET drivers....

With the rapid development of information technology and the Internet, online learning in university computer laboratory has become more and more popular, which spurs close connection between diverse teaching activities and computer. However, the web system in university computer laboratory tends to...

Due to the challenge of complex problems in petroleum engineering field, the coupled pore fluid flow and stress analysis of reservoir has become a focus of study. Based on the rock mechanics and seepage mechanics theory, the governing equations of the coupled pore fluid flow and stress were given for...

This paper has established the robot model of three-arm and five-degree freedom increasing large scope of traversing welding and given decoupling method of model in "large scope of traversing", "triangle movement of two arms" and "spherical movement of one arm". This has completed the image of using...

It is known that optimization in a changing environment is a challenging task, for which the basic goal is not only to obtain the optimal solution, but also strongly adapting to the environmental changes and tracking the optimal solution as closely as possible. In this paper, a novel multi-swarm optimization...

Tank car accidents happened in china frequently, it is harmful to the ecological environment and the economic development. Tank testing is an effective guarantee for safe transportation of tank car. At present, the most efficient way is entering into the tank to inspect it, so, the harmful gas must be...

Gear couplings are used to transmit torque, and theoretically all teethes transmitted the same amount of torque and there is no difference in meshing force for each tooth. In practice, due to manufacturing and mounting errors, not all teeth transmit the same amount of torque, and then resulting in an...

Due to cross-level hierarchical control is usually adopted in China Power Grid, the regulating of direct-dispatching generators would have impacts on the calculation of ACE of the province, in which direct-dispatching generators locate. Closed area method that direct-dispatching generators are excluded...

Aiming at the demand of on-line calculation of temperature in the process of hot rolling production, the method of on-line forecasting of plate temperature based on PLC is studied. The rolling micro-tracing queue is established, and one-dimensional differential temperature iterative calculation formula...

In order to study the vibration response of automobile front side window glass at high speed, its constraint condition must be determined at first. However, it is difficult to establish the boundary constraint model of the window system due to the complicated mechanical properties and the irregular shape...

For a novel hybrid mechanism for automobile electro-coating conveying, a local transmission index is proposed to be used for the optimal design the geometric parameters of the conveying mechanism. By defining the transmission angle of the mechanism, the local transmission index of the mechanism is defined...

In this paper, a method for automatic segmentation of plant point cloud is proposed. We get the quasi-dense point cloud of plant from Multi-view stereo reconstruction based on surface expansion. The Adaptive Normalized Cross-Correlation algorithm is used as matching cost to match points of interest in...

A full scale aero-acoustic wind tunnel test on a 4-door middle class sedan has been applied to determine contributions of major seal components to interior leak noise with "buildup" scheme. Results using psychoacoustic metrics loudness and articulation index (AI) were also compared. The results show...

In this paper, a new frequency control strategy is proposed for islanded microgrid. Due to characteristics of islanded microgrid, the load variation and the new energy disturbance can be predicted by the ultra-short-term prediction. By using feedforward control method, the load disturbance can be roughly...

In order to reduce resonance of all-in-one machine of combine harvester and baler in normal operation, using 3D software of the compression device for parametric modeling, finite element simulation of compression device by ANSYS-Workbench software, calculating the first fourth order modal frequency and...

For the purpose of predict the electrical characteristics of black silicon solar cells, a simple lumped-parameter equivalent circuit model is proposed. This model is in the form of electrical equivalent circuit which contains one diode, one current source and two resistances. The model contains linear...

To identify vehicle wind noise sources in aeroacoustic wind tunnel, Beamforming technique is widely used today. In this study, a production car Roewe 350 was set on the turntable at 1:1 aeroacoustic wind tunnel of Shanghai Automotive Wind Tunnel Center (SAWTC), a planar spiral microphone array with 120...

In order to reduce the water consumption of agriculture to relieve the contradiction between supply and demand in the Wohushan basin, this paper get the effective rainfall in typical years by analyzing the series of rainfall of many years in this basin, and then calculated the water requirement for growth...

It is difficult for reservoirs to guarantee their main water supply aims when the water demands are tremendous and the control gats in its water supply channel are inavailable. In this papper three monitor points are set in the start, the middle and the end of the channel of the Jinxiuchuan reservoir....

In this paper, the natural exposure corrosion behavior of Q235 galvanized steel in four different substation environment including urban population centers (A), rural settlements (B), industrial park (C) and chemical industrial park (D) are studied by potentiodynamic polarization and electrochemical...

A model identification method of hydropower unit (HU) based on Auto-Regressive and Moving Average (ARMA) has been proposed. The ARMA model coefficients were obtained by least square method. Using the proposed method, the parameters ey, e, and eqh of hydro turbine can be calculated. Experiment results...

Information and cyber security has gained considerable importance as safety of the Industrial Control Systems (ICS). Both safety and security deal with risks. Risk assessment is an essential component of safety and security assurance infrastructure mechanisms. Considering the negative or uncertain influence...