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damping item
相关语句
  阻尼项
     The control system is the single input and single output system with high degree. The nonlinear sliding mode is modified as : S = k1y + y2 Sgn(y) + k2y . The nonlinear sliding mode has the damping item by adding the item: k2y , in the case of k1 > 0, k2 > 0. The existence and the stability of the nonlinear sliding mode control system have proved.
     本文把这种非线性滑动模态控制扩展到高阶对象,考虑这样一类被控对象,被控对象为单输入单输出的高阶系统,把非线性滑动模态改进为: S=k1y+y2 sgn(y)+k2y,增加k2y项,是为了增加阻尼项,其中k1>0,k2>0,并对改进后的非线性滑动模态控制的存在性和稳定性作出了证明。
     Then, a self-adaptive nonlinear damping item is used to counteract the nonlinear uncertainties and unknown bounded disturbances. Lyapunov stability theory is to form the controller and the self-adaptive law of the controller parameter.
     然后,利用自适应非线性阻尼项来抑制系统的非线性动态不确定性和未知有界扰动,应用Lyapunov稳定性理论构造出控制器和自适应参数的表达式。
短句来源
     Applying adaptive algorithmto this damping item achieves nicely quantitative restriction for solving space inwave impedance inversion.
     通过对该阻尼项采用自适应算法,解决了波阻抗反演中对解空间的定量约束问题;
短句来源
     This paper studies the existence of non-trivial periodic solutions of the equation x··+f(x,)+g(x)=0. The obtaind result qeneralizes a few classic results and can be applied to the system with the damping item while having no lower bounfdary and G(x)<+∞
     研究二阶常微分方程“x+f(x,x)x+g(x)=0”的非平凡周期解的存在。 所获结果推广了一些经典的结果,并且适用于阻尼项没有下界及G(x)<+∞的情形。
短句来源
     It is presented that the throttle damping item and the inertia damping item can not be ignored in such condition.
     阻尼器模型中指出节流阻尼项与惯性阻尼项不可忽略。
短句来源
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  “damping item”译为未确定词的双语例句
     By introducing the portrait of the system’s safe basin briefly and employing the Runge-Kutta and the Monte-Carlo methods, the eroded safe basins are presented when the softening Duffing oscillator with or without damping item is excited by the Gaussian white or the bounded noise.
     通过对系统安全盆的描绘,利用龙格-库塔和蒙特-卡罗方法,给出了系统有正阻尼和无阻尼时高斯白噪声和有界噪声作用下安全盆的侵蚀状况。
短句来源
     It is shown that, similar to the case of determinate harmonic excitation, the area of the safe basin decreases with the increase of the strength of the stochastic excitation. The boundary of the safe basin also becomes incursive fractal when the damping item is absent and the system is excited only by the Gaussian white or the bounded noise.
     结果表明,类似于确定的谐和激励情形,安全盆的面积将随着随机外激励强度的增大而减少,无阻尼系统的安全盆的边界经高斯白噪声或有界噪声外激励的作用同样可出现分形形状。
短句来源
  相似匹配句对
     DAMPING ALLOYS
     减振合金
短句来源
     Damping Rubber
     阻尼橡胶
短句来源
     Summary of Construction Item
     浅谈建设项目后评价
短句来源
     On Item Cost Management
     浅谈项目成本管理
短句来源
     It is presented that the throttle damping item and the inertia damping item can not be ignored in such condition.
     阻尼器模型中指出节流阻尼项与惯性阻尼项不可忽略。
短句来源
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This paper studies the existence of non-trivial periodic solutions of the equation x··+f(x,)+g(x)=0. The obtaind result qeneralizes a few classic results and can be applied to the system with the damping item while having no lower bounfdary and G(x)<+∞

研究二阶常微分方程“x+f(x,x)x+g(x)=0”的非平凡周期解的存在。所获结果推广了一些经典的结果,并且适用于阻尼项没有下界及G(x)<+∞的情形。

The theoretical analysis of random inverse method for wave impedance inver-sion leads to the conclusion that random inverse method is one damping least squaremethod, which, however, is not general damping least square method becausedamping item λ=σ2n/σ2m has its own physical meaning. Applying adaptive algorithmto this damping item achieves nicely quantitative restriction for solving space inwave impedance inversion. Model parameter variance restricts inversion result tomake widely-restricted...

The theoretical analysis of random inverse method for wave impedance inver-sion leads to the conclusion that random inverse method is one damping least squaremethod, which, however, is not general damping least square method becausedamping item λ=σ2n/σ2m has its own physical meaning. Applying adaptive algorithmto this damping item achieves nicely quantitative restriction for solving space inwave impedance inversion. Model parameter variance restricts inversion result tomake widely-restricted inversion solution range in the reasonable interval of geo-physical parameters. The real inversion example using multihole restriction is giv-en, and the restriction condition for wave impedance inversion is analysed particu-larly.

本文从理论上对波阻抗反演的随机逆解法进行了分析推导,认为随机逆解法是一种阻尼最小二乘法,且因阻尼项λ=σ2n/σ2m有其本身的物理意义,决定了它又不是普通意义下的阻尼最小二乘法。通过对该阻尼项采用自适应算法,解决了波阻抗反演中对解空间的定量约束问题;并用模型参数方差对反演结果进行约束,使宽带约束反演的解限制在合理的地球物理参数范围之内。文中给出了利用多口井进行约束反演的实例,特别对波阻抗反演的约束条件进行了研究。

Based upon the artificial neural networks,the elastic moduli of the concrete dam and the rock foundation are identified according to the horizontal displacements of the concrete dam in the Yunfeng Project.The oscillation property in the iteration process is overcome and the precision of estimated parameters is enhanced by adding damping item and handling in advance for the observed data.The maximum error of horizontal displacement between the calculated value and separated value is less than 0.15 mm.The...

Based upon the artificial neural networks,the elastic moduli of the concrete dam and the rock foundation are identified according to the horizontal displacements of the concrete dam in the Yunfeng Project.The oscillation property in the iteration process is overcome and the precision of estimated parameters is enhanced by adding damping item and handling in advance for the observed data.The maximum error of horizontal displacement between the calculated value and separated value is less than 0.15 mm.The practical application in the engineering facts that the neural networks algorithm for the parameters identification poses the properties of highly identification precision and fast convergence speed.

基于人工神经网络方法 ,根据云峰大坝坝顶水平位移观测资料能够识别大坝混凝土和岩石基础的弹性模量 .采用 BP学习算法 ,并通过增加阻尼项以及对观测数据的归一化处理 ,避免了迭代过程中的振荡性 ,提高了参数识别精度 .将弹性模量识别结果代入到有限元模型中 ,计算所得到的坝顶水平位移与坝顶观测水平位移水压分量的最大误差小于 0 .15mm.工程实际应用表明 ,用神经网络方法识别材料参数具有识别精度高和收敛速度快等特性 .

 
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