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Based on control system of the belt intelligent transmission system analysis and research, the choice of the principles of PLC of intelligent transport systems and the circuit and the control procedures of control part have been. They meet the system's functionality.
In this paper, CPDP350 using pulsed MIG welding machine, in the two pulse mode, respectively welding current, Arc voltage welding parameters and acquisition welding current and voltage waveforms. Through the current and voltage waveform analysis of different pulse mode parameters on welding and seam welding process of forming, help in the application process to choose a suitable model pulse welding...
This dissertation analyzed and evaluated solar hot water system from the angle of technology and economy. First, it is analyzed that the operating principle and technical specialty of Solar hot water system, which is a kind of energy-efficient and environmental protection hot water system, which is an effective advisable way for heating water, compared with other traditional hot water system. Then,...
After analyzing take-up assembly for belt conveyor, the current flaw that the device has existed is pointed out in this paper. Then the take-up assembly is improved designed. The improved take-up assembly consists of take-up winch system, hydraulic system, electrical control system etc. System mainly through pressure switch controls oil pump electrical machinery's movement and parking, controls system...
This dissertation analyzed air conditioning of ground source heat pump and got operation problems of ground source heat pump; Then works instance as the research object, its operating characteristics were monitored. Through the technical feasibility analysis, the rehabilitation programs of application were proposed. Use of solar energy as an auxiliary can solve the problems of ground source heat pump...
This dissertation analyzed and evaluated air conditioning of ground source heat pump, air conditioning of the solar energy-ground source energy-ground source heat pump and air conditioning of the wind energy-ground source heat pump from the angle of technology and economy. First, it is analyzed that the operating principle, technical specialty and problems of air conditioning of ground source heat...
This paper mainly introduced the basic design plan of taking technology of GIS used for heating pipelines district heating in Urumqi. It elaborates in detail the critical technology involving the system structure design, page planning, function planning, data organization, and the choice of GIS platform. Thus the theory and technical bases were provided to the further development of software and hardware...
This paper has discussed the small tractor transmission, which is uneven thickness and box part of complex structure. The small tractor transmission appears several reasons of cold cracks for in the casting process. This paper proposed prevention measures and solutions in order to greatly reduce the rejection rate, by the process, physical and chemical analysis, core materials testing, tensile strength...
This paper has discussed the popular method of control and deeply analyzed the dynamic and static characteristics of the water level based on analyzing the main factors influencing the water level of drum. This paper begins with the balance of heat and substance of water in boiler's bubble and educes the universal mechanism controlling model to describe the water level of boiler and studies the character...
This paper, the large-scale heat network is now commonly used outdoor mechanical circulating hot water heating-supply tube net. Hydraulic regime was analyzed in district heating system at first, and then established hydraulic calculation model basing on the fact of operation. At the same time thermal condition was also brought and thermal calculation model was established from the node thermal balance...
In this paper, the wind resources of twenty four regions of Inner Mongolia were assessed. The wind atlas was presented using the WAsP software based on the wind datas of twenty four regions in Inner Mongolia during 1998-2008, which were provided by the China meteorological date sharing service system. Using the Weibull probability density function of wind speed and Weibull distribution function of...
In this paper, the pneumatic overspeed control mechanism of 300 W wind turbine was design. This paper analyses the operation principle of overspeed control mechanism, and chooses rudder yaw mode, and gives the accurate formulae of back-position-torque of tale vane. This paper points out that the balance-torque of tail vane comes form its aerodynamic force generated by the angle between wind direction...
Through the method of experiment analysis to a 400W direct drive permanent magnet wind turbine prototype in this paper, as to the permanent magnet wind generator output voltage stability, taking the changing rate of voltage(voltage regulation) as stability parameters, we sample different speeds, different loads and different tip-speed ratios of the output voltage by two kinds of operating mode. One...
According to wind resource data in different parts, the characteristic wind speeds of wind turbine were calculated. From low cost considerations, the characteristic wind speeds of wind turbine were optimized, the diameters of wind wheel were shortened and the difficulty of technology was reduced, in order to design the wind turbine. Finally the thesis contrasted and validated by Experimental analysis...
This paper, MATALAB was used to simulate series-connecting of the ground-source heat pump and the solar collector. Firstly, the simulation models of heat pump unit, ground heat-exchanger and solar collector were established. Secondly, the dynamic simulation model of combined heating system under series-connecting mode was obtained through the established sub-models and mutual coupling relations. Finally,...
In this paper, the wind atlas was presented using the WAsP software based on the wind resource data of four regions in Inner Mongolia during 1998-2008, which were provided by the China meteorological date sharing service system. The scale parameter A and the shape parameter k of Weibull probability density distribution function could be calculated. Furthermore, the cut-in wind speed and rated wind...
As far as the currently used lead-acid battery has poor abilities of self-resistance to overcharge and over-discharge, it is unsuitable for a dedicated storage device of wind turbine. This paper proposed a control strategy of storing and releasing energy about off-grid wind turbine by analyzing and studying the ideal characteristic curve of charging voltage and current of lead-acid battery. The strategy...
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