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多步块格式是一类新的一般线性方法,在求解微分-代数方程的过程中不会出现精度降低现象。研究了多步块格式的构造方法,精度条件及具有Runge-Kutta稳定性的多步块格式,多步块格式具有刚性精确的优点,且级精度与格式精度相等。构造了具有Runge-Kutta稳定性的2级和3级多步块格式,具有L-稳定性。数值算例证实多步块格式在求解微分-代数方程不会精度降低。Abstract: The multistep block methods are a new class of general linear methods,and the methods solve the differential-algebraic equations with no order reduction.The construction of the multistep block methods was described,and order condition and stability was studied.The multistep block methods with Runge-Kutta stability were also constructed.The multistep block methods have many nice properties,for example,stiffly accurate,and stage order is equal to order of method.At last the methods of 2-stage and 3-stage with Runge-Kutta stability were constructed,and they have the property of L-stability.The numerical example shows that the multistep block methods can solve the differential-algebraic equations without the order reduction. 相似文献
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讨论了多延迟中立型微分方程解析解及由隐式Runge-Kutta方法应用于方程得到的数值解的稳定性.给出了方程解析解渐近稳定的一个充分条件.在此基础上将隐式Runge-Kutta方法应用于方程,证明了数值解NGPG-稳定的充分必要条件为隐式Runge-Kutta方法是A-稳定的. 相似文献
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不确定Lurie型控制系统的绝对稳定性 总被引:5,自引:1,他引:4
讨论了区间非线性Lurie型控制系统的鲁棒绝对稳定性.用Lyapunov函数法研究了区间非线性Lurie型直接控制系统和间接控制系统的鲁棒绝对稳定性;给出了区间非线性Lurie型直接控制系统和间接控制系统鲁棒绝对稳定的充分条件;建立了区间非线性Lurie型控制系统鲁棒绝对稳定与区间矩阵稳定的关系. 相似文献
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控制系统在实际问题中有广泛应用,众多文献对系统本身及其数值方法的稳定性进行了深入研究。将单支方法用于求解非线性控制系统,获得了方法IS稳定的条件,可视为单支方法关于非线性常微分方程的稳定性分析在非线性控制系统的进一步推广。最后给出了一些常用的单支方法IS稳定的条件。 相似文献
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讨论了两步Runge-Kutta方法求解延迟微分方程的数值稳定性,分析了求解线性试验方程的两步Runge-Kutta方法的稳定性态。证明了两步Runge-Kutta方法是GPLm-稳定的,当且仅当它求解常微分方程是L-稳定的。 相似文献
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由于非线性动态系统的复杂性,目前还没有统一的控制器设计方法,用传统的线性系统理论来设计,当工作点大范围变化时,很难保证其性能及稳定性.在人工神经网络内模控制系统中建立了神经网络内部模型和神经网络内模控制器,提出了基于多模型的内模控制方法,它对非线性动态过程的控制具有良好的性能.在此基出上,给出了方便易行控制算法,仿真分析结果验证了控制算法的有效性. 相似文献
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在分析Lyapunov稳定性理论局限性的基础上,提出了一种新型的基于计算机仿真的非线性定常控制系统稳定性分析方法,规范和简化了Lyapunov函数的选择办法,扩展了Lyapunov稳定性理论.将Lyapunov稳定性判据第二法(即直接法)中的有关局部稳定性的充分条件扩展成为充分必要条件.给出了该方法的理论证明,并且将该方法成功地在MATLAB环境下应用于单级倒立摆模糊控制系统的稳定性分析.实验结果证明该方法是有效的. 相似文献
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《系统工程理论与实践》2014,(5)
正August 10-14,2015Beijing,ChinaThe International Congress on Industrial and Applied Mathematics(ICIAM)is the premier international congress in the field of applied mathematics held every four years under the auspices of the International Council for Industrial and Applied Mathematics.From August 10 to 14,2015,mathematicians,scientists 相似文献
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《系统科学与系统工程学报(英文版)》2014,(2)
正AF:Any Field The School of Economics and Management at Tsinghua University(Tsinghua SEM)invites applications for faculty positions at all levels(Assistant Professor,Associate Professor and Full Professor)in any fields of business administration and management.Tsinghua SEM is the only school 相似文献
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《系统科学与系统工程学报(英文版)》2014,(4)
正June 22-24,2015Guangzhou,China http://iec.cnsba.com/index.htmlCo-Sponsored by:ffiEE SMC(pending)South China University of Technology The Chinese University of Hong Kong Tsinghua UniversityHosted bv:School of Business Administration,South China University of Technology,China Conference Co-Chairs: 相似文献
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The paper is about negotiating with issues that discourage innovation. The subject is environmental deterioration, with concern directed at the impediments that keep it from being innovatively resolved. The paper is organized around three issues. (1) The dominant model of environmental concern, called environmental protection, is managed predominantly via command and control approaches. (2) Command and control, by relying on analytical segmentation to subdivide the problem into digestible bits and using formal legislation to direct it, are not up to emerging challenges in the area. (3) More robust models are available but difficult to experiment with due to impediments that discourage change. These impediments are seen in ideals associated with protection, prevention, recycling, and sustainability that tend to do more to sustain harmful practices than to seek beneficial alternatives. Being able to appreciate the underlying restrictions of entropy could help stimulate a more innovative agenda. These issues are tested via a project funded by the EPA entitled ENERGY STAR Homes. 相似文献