The nonlinear damping and stiffness of a ship motion result in the coupling between rolling and pitch in big amplitude.
舰船运动的阻尼和刚度非线性，导致舰船大幅运动时横摇和纵摇之间的耦合。
A robust nonlinear flight control law was proposed which synthesized the neural networks and the dynamic nonlinear damping theory.
应用神经网络控制与动态非线性阻尼控制综合的非线性控制方法对飞行控制律进行了研究。
The effects of nonlinear damping and force source term on blowing-up of the solution were analyzed with an energy-compensation method.
用补偿能量的方法研究了非线性阻尼项和力源项对解的爆破行为的影响。
The nonlinear damping and stiffness of a ship motion in the seas result in the coupling motion between rolling and pitch in big amplitude.
船舶运动时的阻尼和刚度非线性，导致船舶大幅运动时横摇和纵摇之间的耦合。
In comparison with linear rolling in still water, the effects of nonlinear damping and righting moment on ship's rolling motions were analyzed.
通过与静水中线性横摇运动的比较，分析非线性阻尼力矩和非线性复原力矩对船舶横摇运动的影响。
In this paper we study the initial-boundary value problem for some nonlinear higher-order wave equation with nonlinear damping and source terms.
研究一类带非线性阻尼项和源项的高阶非线性波动方程的初边值问题。
The random nonlinear differential equation of ship's motion is established considering the nonlinear damping, nonlinear recover moment and random waves.
考虑非线性阻尼、非线性复原力矩和随机波浪，建立了随机横浪中船舶运动的随机非线性微分方程。
Firstly, mathematical expressions of nonlinear damping and nonlinear righting moment were discussed, and the equations for nonlinear rolling motions in waves were established.
首先，本文讨论船舶非线性横摇运动中非线性阻尼力矩和非线性复原力矩的数学表达形式，并建立船舶在波浪中的非线性横摇运动方程。
Based on the frequency response functions curve fit method, an approximate method for extraction of sloshing model parameters about the problem of nonlinear damping is derived.
本文在液体晃动等效力学模型的频响函数拟合方法的基础上，导出一种处理非线性液体晃动阻尼问题的模型参数近似拟合方法。
The influence of the nonlinear damping moment is also discussed in the mathematical model, in order to make the simulation results are in a good agreement with practical situation.
在该模型中还讨论了非线性阻尼力矩的影响，以便使仿真结果更符合实际。
By introducing nonlinear damping term, it is proved that all signals in the closed-loop system are globally stable, and the tracking error and the parameter (estimation) error converge to zero.
通过引入非线性阻尼项，保证了闭环系统的所有信号都是全局稳定的，而且跟踪误差及参数估计误差均收敛于零。
The concept of roll energy decay function is put forward, and the nonlinear damping coefficients are solved based on the minor error between actual energy function and evaluated energy function.
提出了能量衰减函数的概念，并由实际能量衰减函数与估算能量衰减函数之间的方差最小来确定非线性阻尼系数。
Firstly, mathematical expressions of nonlinear damping and nonlinear righting moment were discussed, and the equations for nonlinear rolling motions in still water and in waves were established.
首先，本文讨论船舶非线性横摇运动中非线性阻尼力矩和非线性复原力矩的数学表达形式，并建立船舶在静水中和波浪中的非线性横摇运动方程。
The random nonlinear differential equation of the rolling motion of ships in random beam waves is established considering the nonlinear damping, nonlinear restoring moment, and the random waves.
为了研究随机海浪中船舶航行安全域的构造及生存概率的预报方法，考虑阻尼和复原力矩的非线性及海浪的随机性，建立随机横浪中船舶运动的随机非线性微分方程。
In this paper, the initial-boundary value problem of a kind of nonlinear fourth-order wave equations with damping and source terms is studied on the base of Beam equation.
本文在梁方程的基础上研究了一类具有非线性阻尼项和力源项的四阶波动方程的初边值问题。
The damping force model of the damper and the nonlinear mathematical model of vibration reduction system are established.
建立了新型磁流体阻尼器的阻尼力模型及其减振系统的非线性数学模型。
Based on the suspension model of a homemade car with 5-degree freedom and a road surface model in time domain, the nonlinear spring and damping parameters were optimized in time domain.
针对国产某微型轿车，在建立汽车悬架系统5自由度模型和时域路面模型基础上，对悬架系统的线性弹簧和非线性阻尼参数进行了优化。
By which linear and nonlinear frequency response function was estimated, and nonlinear stiffness coefficient and damping coefficient of the model were optimized by least square method in this paper.
利用该方法对非线性频响函数进行估计，并利用了最小二乘法对模型的非线性刚度系数和非线性阻尼系数进行了优化。
Nonlinear physical parameters of the docking mechanism-inertial, damping and stiffness matrices, are identified by direct parameter estimate(DPE)method with input-output data of the system.
采用直接参数识别方法（DPE）由系统的输入、输出数据识别空间对接机构的物理参数：惯量矩阵、阻尼矩阵和刚度系数矩阵。
Based on above fitted relation and equivalent viscous damping theory, a nonlinear constitutive equation of damping alloy depending on strain amplitude and frequency is put forward.
将所得变化规律与等效粘性阻尼理论相结合，给出了一种依赖于应变和频率的非线性阻尼本构关系式。
The nonlinear rolling damping of a ship is usually determined by rolling attenuation test in calm water.
横摇非线性阻尼通常是在静水中进行横摇衰减试验确定。
The dropping shock of cushioning packaging system with damping and nonlinear elasticity of three order functional relation is investigated.
研究具有粘滞阻尼和三次函数强非线性弹性缓冲包装系统的跌落冲击响应。
The system is simplified into single degree of freedom dynamics model with piecewise linear restoring forces and square damping, then the piecewise nonlinear motion equation of ALT is established.
将该系统简化为单自由度分段线性恢复刚度，含平方阻尼的动力学分析模型，建立了铰接装载塔的分段非线性运动方程。
The mathematic model of oil-gas spring nonlinear stiffness and damping characteristic of a construction truck is created and introduced into the vehicle model.
推导并建立了某工程车辆油气弹簧的非线性刚度和阻尼特性的数学模型，并将其导入到车辆模型中。
This paper discusses the boundary value problem of the nonlinear wave equation with damping.
本文讨论有阻尼的非线性波方程的边值问题。
In this paper, the sixth-order approximate analytical solutions of the strong nonlinear oscillation with positive damping are obtained by using newly developed homotopy analysis method.
阐述利用最新提出的同伦分析方法求解有正阻尼的强非线性振动方程，得到了该方程的六阶近似解析解。
From energy point of view, a bounded damping feedback control method is proposed to achieve chaos control by reducing system energy for a class of nonlinear system.
从能量角度提出了有界阻尼反馈控制方法，通过减少系统能量实现一类非线性系统的混沌控制。
The structure design for sloshing suppression in a liquid propellant tank results in the nonlinear characteristics of liquid sloshing damping.
液体推进剂贮箱的防晃结构设计导致液体晃动阻尼的非线性特性。
Concerns with the nonexistence of global solutions to the initial boundary value problem for a nonlinear hyperbolic equation with material damping.
考虑了一类具材料阻尼的非线性双曲型方程初边值问题整体解的不存在性。
This paper studies the nonlinear motion law of a simple pendulum with damping factor.
本文研究具有阻尼因素的单摆非线性运动规律。
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