Artificial neural network (ANN) is used for establishment of the models in GTAW conditions. The effectiveness of the static model is tested from both the weld quality and quantity aspects, and the dynamic model succes...Artificial neural network (ANN) is used for establishment of the models in GTAW conditions. The effectiveness of the static model is tested from both the weld quality and quantity aspects, and the dynamic model successfully takes the intelligent control of the weld quality. It is found that the ANN control strategy has a strong fault tolerance property and owes the good generality in welding quality control.展开更多
A novel 60 kW plasma converter with full range soft-switch by utilizing magnetizing inductance, leakage inductance and distributed inductance is introduced. The current injection phase-shifting technique is introduced...A novel 60 kW plasma converter with full range soft-switch by utilizing magnetizing inductance, leakage inductance and distributed inductance is introduced. The current injection phase-shifting technique is introduced into the research of soft-switching plasma converter successfully. The magnetic bias of transformer and the protection of switching parts are solved. The tests state that the power supply has excellent characteristics and higher efficiency and can meet the demand of large power plasma process well.展开更多
现代武器装备系统具有造价高、层级多等特点,其效能评估存在着评估成本高、层间效能影响关系模糊等难点。该文在基于模型的系统工程(model-based systems engineering,MBSE)方法论的基础上,构造了模型驱动的系统效能评估方法,将系统建...现代武器装备系统具有造价高、层级多等特点,其效能评估存在着评估成本高、层间效能影响关系模糊等难点。该文在基于模型的系统工程(model-based systems engineering,MBSE)方法论的基础上,构造了模型驱动的系统效能评估方法,将系统建模引入效能评估,通过模型的分析和仿真,支持效能数据的获取与计算。与传统方法相比,该方法实施成本低、针对性强,显著提高了系统设计优化和开发决策的效率。该方法与系统设计之间结合紧密,适用于武器装备系统发展建设的全生命周期各个阶段,并且可实现不同粒度系统层级的精细化效能评估。以舰艇损管系统(damage control system,DCS)为例,验证了该方法的有效性。展开更多
文摘Artificial neural network (ANN) is used for establishment of the models in GTAW conditions. The effectiveness of the static model is tested from both the weld quality and quantity aspects, and the dynamic model successfully takes the intelligent control of the weld quality. It is found that the ANN control strategy has a strong fault tolerance property and owes the good generality in welding quality control.
基金This project is supported by National Natural Science Foundation of China (No.59975030)Provincial Natural Science Foundation of Guangdong,China(No.04300691).
文摘A novel 60 kW plasma converter with full range soft-switch by utilizing magnetizing inductance, leakage inductance and distributed inductance is introduced. The current injection phase-shifting technique is introduced into the research of soft-switching plasma converter successfully. The magnetic bias of transformer and the protection of switching parts are solved. The tests state that the power supply has excellent characteristics and higher efficiency and can meet the demand of large power plasma process well.
文摘现代武器装备系统具有造价高、层级多等特点,其效能评估存在着评估成本高、层间效能影响关系模糊等难点。该文在基于模型的系统工程(model-based systems engineering,MBSE)方法论的基础上,构造了模型驱动的系统效能评估方法,将系统建模引入效能评估,通过模型的分析和仿真,支持效能数据的获取与计算。与传统方法相比,该方法实施成本低、针对性强,显著提高了系统设计优化和开发决策的效率。该方法与系统设计之间结合紧密,适用于武器装备系统发展建设的全生命周期各个阶段,并且可实现不同粒度系统层级的精细化效能评估。以舰艇损管系统(damage control system,DCS)为例,验证了该方法的有效性。
