单件小批量生产形式下的作业车间调度是生产调度中的一个重要问题,也是计算机集成制造系统中的一个关键环节,在实际生产中具有广泛应用。针对已有的求解作业车间调度问题的算法,引入了交换与移动相结合的机制,以提高调解效率,并在Visual...单件小批量生产形式下的作业车间调度是生产调度中的一个重要问题,也是计算机集成制造系统中的一个关键环节,在实际生产中具有广泛应用。针对已有的求解作业车间调度问题的算法,引入了交换与移动相结合的机制,以提高调解效率,并在Visual Basic for Applications for Project 2000中实现了该算法。经过分析及一个10×10的调度问题的测试实例验证,利用这种算法求解作业车间调度问题可得到十分满意的结果。展开更多
In surveying adjustment models,there is usually some uncertain additional information or prior information on parameters,which can constrain the parameters,and guarantee the uniqueness and stability of parameter solut...In surveying adjustment models,there is usually some uncertain additional information or prior information on parameters,which can constrain the parameters,and guarantee the uniqueness and stability of parameter solution.In this paper,we firstly use ellipsoidal sets to describe uncertainty,and establish a new adjustment model with ellipsoidal uncertainty.Furthermore,we give a new adjustment criterion based on minimization trace of an outer ellipsoid with two ellipsoid intersections,and analyze the propagation law of uncertainty.Correspondingly,we give a new algorithm for the adjustment model with ellipsoid uncertainty.Finally,we give three examples to test and verify the effectiveness of our algorithm,and illustrate the relation between our result and the weighted mixed estimation.展开更多
文摘单件小批量生产形式下的作业车间调度是生产调度中的一个重要问题,也是计算机集成制造系统中的一个关键环节,在实际生产中具有广泛应用。针对已有的求解作业车间调度问题的算法,引入了交换与移动相结合的机制,以提高调解效率,并在Visual Basic for Applications for Project 2000中实现了该算法。经过分析及一个10×10的调度问题的测试实例验证,利用这种算法求解作业车间调度问题可得到十分满意的结果。
基金National Natural Science Foundation of China(Nos.41674009,41574006,41674012)。
文摘In surveying adjustment models,there is usually some uncertain additional information or prior information on parameters,which can constrain the parameters,and guarantee the uniqueness and stability of parameter solution.In this paper,we firstly use ellipsoidal sets to describe uncertainty,and establish a new adjustment model with ellipsoidal uncertainty.Furthermore,we give a new adjustment criterion based on minimization trace of an outer ellipsoid with two ellipsoid intersections,and analyze the propagation law of uncertainty.Correspondingly,we give a new algorithm for the adjustment model with ellipsoid uncertainty.Finally,we give three examples to test and verify the effectiveness of our algorithm,and illustrate the relation between our result and the weighted mixed estimation.
