Based on the aerodynamic shape and structural form of the blade are fixed,a mathematical model of optimization design for wind turbine blade is established.The model is pursued with respect to minimum the blade mass t...Based on the aerodynamic shape and structural form of the blade are fixed,a mathematical model of optimization design for wind turbine blade is established.The model is pursued with respect to minimum the blade mass to reduce the cost of wind turbine production.The material layup numbers of the spar cap are chosen as the design variables;while the demands of strength,stiffness and stability of the blade are employed as the constraint conditions.The optimization design for a 1.5 MW wind turbine blade is carried out by combing above objective and constraint conditions at the action of ultimate flapwise loads with the finite element software ANSYS.Compared with the original design,the optimization design result achieves a reduction of 7.2%of the blade mass,the stress and strain distribution of the blade is more reasonable,and there is no occurrence of resonance,therefore its effectiveness is verified.展开更多
In order to fit the different demands for the internet of things system of greenhouse environment monitoring and control,the greenhouse environment monitoring and control management system based on Google Web Toolkit(...In order to fit the different demands for the internet of things system of greenhouse environment monitoring and control,the greenhouse environment monitoring and control management system based on Google Web Toolkit(GWT)was developed.Using remote method call(RPC)AJAX as the communication method between browser and web server,the system realized the functions such as:configuration of acquisition and control parameters,the adaptive match of database between gateway and server,the adaptive diagnosis of monitoring parameters,the warning of monitoring parameters,the adaptive generation of interface,and so on.The functions of the system was tested the results shows that the WEB browser application and Android App can adaptively realize the greenhouse environment monitoring and control according to the information configuration.展开更多
文摘Based on the aerodynamic shape and structural form of the blade are fixed,a mathematical model of optimization design for wind turbine blade is established.The model is pursued with respect to minimum the blade mass to reduce the cost of wind turbine production.The material layup numbers of the spar cap are chosen as the design variables;while the demands of strength,stiffness and stability of the blade are employed as the constraint conditions.The optimization design for a 1.5 MW wind turbine blade is carried out by combing above objective and constraint conditions at the action of ultimate flapwise loads with the finite element software ANSYS.Compared with the original design,the optimization design result achieves a reduction of 7.2%of the blade mass,the stress and strain distribution of the blade is more reasonable,and there is no occurrence of resonance,therefore its effectiveness is verified.
基金supported by the Jiangsu Province Agricultural Science and Technology Innovation Project(CX(15)1015)the Natural Science Foundation of Jiangsu Provincial Department of Education(17KJA416002)+2 种基金the China Postdoctoral Science Foundation funded project(2015M580400)the Jiangsu Province Postdoctoral Science Foundation(1501112B)the Priority Academic Program Development of Jiangsu Higher Education Institutions(2014-37).
文摘In order to fit the different demands for the internet of things system of greenhouse environment monitoring and control,the greenhouse environment monitoring and control management system based on Google Web Toolkit(GWT)was developed.Using remote method call(RPC)AJAX as the communication method between browser and web server,the system realized the functions such as:configuration of acquisition and control parameters,the adaptive match of database between gateway and server,the adaptive diagnosis of monitoring parameters,the warning of monitoring parameters,the adaptive generation of interface,and so on.The functions of the system was tested the results shows that the WEB browser application and Android App can adaptively realize the greenhouse environment monitoring and control according to the information configuration.
