简述了仿真实验设计与分析(design and analysis of simulation experiment,DASE)的几个基本术语和理论框架,在这一理论框架下对国内外物流系统的优化设计案例进行了总结和回顾,展示了实际物流系统与DASE理论相结合所取得的应用成果;通...简述了仿真实验设计与分析(design and analysis of simulation experiment,DASE)的几个基本术语和理论框架,在这一理论框架下对国内外物流系统的优化设计案例进行了总结和回顾,展示了实际物流系统与DASE理论相结合所取得的应用成果;通过与DASE前沿理论的比较指明了两者结合的未来是值得关注的发展方向。本研究为实际仿真问题的优化提供了一定的方法参考,也为方法研究者提供了更丰富的实际素材。展开更多
The application of new-designed levitation controller requires extensive validation prior to enter into commercial service. However, huge mounts of approximations and assumptions lead the theoretical analysis away fro...The application of new-designed levitation controller requires extensive validation prior to enter into commercial service. However, huge mounts of approximations and assumptions lead the theoretical analysis away from the engineering practice. The experimental methods are time-consuming and financial expensive, even unrealizable due to the lack of suitable sensors. Numerical simulations can bridge the gap between the theoretical analysis and experimental techniques. A complete overall dynamic model of maglev levitation system is derived in this work, which includes the simple-supported bridges, the calculation of electromagnetic force with more details, the stress of levitation modules and the cabin. Based on the aforementioned model, it shows that the inherent nonlinearity, inner coupling, misalignments between the sensors and actuators, and self-excited vibration are the main issues that should be considered during the design process of controller. Then, the backstepping controller based on the mathematical model of the module with reasonable simplifications is proposed, and the stability proofs are listed. To show the advantage of controller, two numerical simulation experiments are carried out. Finally, the results illustrating closed-loop performance are provided.展开更多
文摘简述了仿真实验设计与分析(design and analysis of simulation experiment,DASE)的几个基本术语和理论框架,在这一理论框架下对国内外物流系统的优化设计案例进行了总结和回顾,展示了实际物流系统与DASE理论相结合所取得的应用成果;通过与DASE前沿理论的比较指明了两者结合的未来是值得关注的发展方向。本研究为实际仿真问题的优化提供了一定的方法参考,也为方法研究者提供了更丰富的实际素材。
基金Projects(60404003,11202230)supported by the National Natural Science Foundation of China
文摘The application of new-designed levitation controller requires extensive validation prior to enter into commercial service. However, huge mounts of approximations and assumptions lead the theoretical analysis away from the engineering practice. The experimental methods are time-consuming and financial expensive, even unrealizable due to the lack of suitable sensors. Numerical simulations can bridge the gap between the theoretical analysis and experimental techniques. A complete overall dynamic model of maglev levitation system is derived in this work, which includes the simple-supported bridges, the calculation of electromagnetic force with more details, the stress of levitation modules and the cabin. Based on the aforementioned model, it shows that the inherent nonlinearity, inner coupling, misalignments between the sensors and actuators, and self-excited vibration are the main issues that should be considered during the design process of controller. Then, the backstepping controller based on the mathematical model of the module with reasonable simplifications is proposed, and the stability proofs are listed. To show the advantage of controller, two numerical simulation experiments are carried out. Finally, the results illustrating closed-loop performance are provided.
