在工程教育认证背景下,文章针对当前机械电子工程专业“综合实践”课程教学评价体系中存在的问题,设计了基于OBE(Outcome Based Education,成果导向教育)理念反向设计的“综合实践”课程新的多层次、多元化的教学评价体系机制,构建了具...在工程教育认证背景下,文章针对当前机械电子工程专业“综合实践”课程教学评价体系中存在的问题,设计了基于OBE(Outcome Based Education,成果导向教育)理念反向设计的“综合实践”课程新的多层次、多元化的教学评价体系机制,构建了具有科学性、全面性、有效性的课程目标、内涵观测点、全方位教学过程、课程考核方法及评价标准。通过统计分析计算得出目标达成度,以准确评估学生是否具备知识综合运用能力、工程实践能力、创新意识。同时,评估结果再反馈到课程目标,配合持续性改进措施达成闭环,以此不断推动机械电子工程专业人才培养质量的提升。展开更多
In order to realize rapid response to performance-driven design for nuclear valve products, a rapid design platform is constructed by combining the structural features with the multi-characteristic optimization requir...In order to realize rapid response to performance-driven design for nuclear valve products, a rapid design platform is constructed by combining the structural features with the multi-characteristic optimization requirement, which integrates parametric design, multi-characteristic simulation, and multidisciplinary design optimization of nuclear power valves together. Through the integration of heterogeneous CAX/MDO software, such as UG, ANSYS and iSIGHT, the analytical efficiency is enhanced by coupling respective and unique advantage of various software systems, and the mutual coordination and information sharing are realized between the heterogeneous systems. The application example shows that the system is convenient operation that improves the automation in design and analysis on nuclear valves. The results can provide a practical and effective development method and technical reference of the integrated design system for valve products.展开更多
To analyze the attitude errors of vertical docking test system of small satellite,the static error and kinematic error of test system are considered.The working principle of test system and coordinate of actuator are ...To analyze the attitude errors of vertical docking test system of small satellite,the static error and kinematic error of test system are considered.The working principle of test system and coordinate of actuator are introduced.The model of friction torque on the joints and torque on docking mechanism are built.Dynamics equation of actuator is built by the Lagrange equation and the Nielsen equation.Under the condition of 24 different angle groups,the calculation of dynamics equation is built by using MATLAB/SIMULINK platform and the kinematic errors of actuator are obtained.The attitude error models of docking mechanism are built.Results shows that the main angle error sources of yaw,row,pitch are not identical.The attitude error of yaw angle can be decreased by compensating the angle error around xaxis.The attitude error of row angle mainly originates in the system error,and it can be eliminated by adjusting non-orthogonal degree.展开更多
文摘在工程教育认证背景下,文章针对当前机械电子工程专业“综合实践”课程教学评价体系中存在的问题,设计了基于OBE(Outcome Based Education,成果导向教育)理念反向设计的“综合实践”课程新的多层次、多元化的教学评价体系机制,构建了具有科学性、全面性、有效性的课程目标、内涵观测点、全方位教学过程、课程考核方法及评价标准。通过统计分析计算得出目标达成度,以准确评估学生是否具备知识综合运用能力、工程实践能力、创新意识。同时,评估结果再反馈到课程目标,配合持续性改进措施达成闭环,以此不断推动机械电子工程专业人才培养质量的提升。
基金Sponsored by International Science & Technology Cooperation Program of China (Grant No.2009DFA71860)Key Project of Chinese Ministry of Education (Grant No.210058)
文摘In order to realize rapid response to performance-driven design for nuclear valve products, a rapid design platform is constructed by combining the structural features with the multi-characteristic optimization requirement, which integrates parametric design, multi-characteristic simulation, and multidisciplinary design optimization of nuclear power valves together. Through the integration of heterogeneous CAX/MDO software, such as UG, ANSYS and iSIGHT, the analytical efficiency is enhanced by coupling respective and unique advantage of various software systems, and the mutual coordination and information sharing are realized between the heterogeneous systems. The application example shows that the system is convenient operation that improves the automation in design and analysis on nuclear valves. The results can provide a practical and effective development method and technical reference of the integrated design system for valve products.
基金supported by National Natural Science Foundation of China(No.51375125)the Foundation for Distinguished Young Scholars of Heilongjiang Province,China(No.JC201111)the Program for New Century Excellent Talents in University(No.NCET10-0146)
文摘To analyze the attitude errors of vertical docking test system of small satellite,the static error and kinematic error of test system are considered.The working principle of test system and coordinate of actuator are introduced.The model of friction torque on the joints and torque on docking mechanism are built.Dynamics equation of actuator is built by the Lagrange equation and the Nielsen equation.Under the condition of 24 different angle groups,the calculation of dynamics equation is built by using MATLAB/SIMULINK platform and the kinematic errors of actuator are obtained.The attitude error models of docking mechanism are built.Results shows that the main angle error sources of yaw,row,pitch are not identical.The attitude error of yaw angle can be decreased by compensating the angle error around xaxis.The attitude error of row angle mainly originates in the system error,and it can be eliminated by adjusting non-orthogonal degree.
