查询词典 stepping stone method

At the same time a subdivision method for constant amplitude rotating current vector is adopted to achieve the equal subdivision control of stepping motor's constant torque.

同时采用电流矢量恒幅旋转的细分方法实现了步进电机恒转矩均匀细分控制，提高了步进电机的分辨率和运行稳定性。

The time-stepping FE method is used for calculating the transient starting performance of the squirrel cage induction motor.

时步有限元方法是计算鼠笼异步电机暂态起动特性的一种有效方法，本文针对当前该方法在工程应用中存在的问题展开了研究。

To verify the feasibility of the back-stepping design method, simulation and experiment were done.

分析影响冷搓花键成形精度的相关因素，认为该反推设计方法具有实际意义。

In the design of the controller the model error and external disturbances are considered, and a nonlinear robust controller is developed by back-stepping method while model errors and disturbances are considered.

考虑到模型误差和外部干扰因素，采用反步法设计了非线性鲁棒控制器。

Based on the analysis the phenomenon of jet interaction, a mode of missile with jet interaction amplification factor is set up. For overcoming the disadvantages of uncertainties and unknown disturbance, the back-stepping control structure based on NDO is designed in virtue of NDO's approaching ability. The overall system guarantees that all signals involved are asymptotically stable by Lyapunov method.

针对导弹气动参数的不确定性及外界干扰对导弹控制性能的影响，利用非线性干扰观测器对干扰的逼近特性，结合反演控制设计了非线性导弹自动驾驶仪，并基于Lyapunov方法，给出了整本系统的稳定性证明。

This paper presents a nonlinear robust adaptive excitation control design procedure for multi machine power systems using back-stepping method. The control objective is to drive machine power angle and frequency to the steady-state operation point, and guarantee that the close-loop system is adaptive to the uncertainties of generator damping coefficient and d-axis reactance, and robust to model errors or bounded disturbances.

利用反步法设计了多机电力系统中的非线性鲁棒自适应励磁控制方案，控制目标是调节发电机功角和频率至稳态运行点的极小领域，并使闭环系统对发电机阻尼系数和电抗参数的不确定性具有自适应能力，且对模型误差和外部有界干扰具备鲁棒性，同时保证各控制器是分散化和本地化的。

First, we consider nonholonomic chained systems with modeling error, in this section,based on back-stepping , using the so-called adding a integrator , state-scaling technique , we design discontinuous feedback law,such that the trival solution of the closed-loop systems global strong stable; Second,we consider high-order nonholonomic chained systems with modeling errors and external disturbances, in this section,using input/state-scaling and integrator backstepping methods , we design discontinuous feedback law and give out the switching strategy, such that the closed-loop systems global /C-exponential stable; Finally, we consider a class of more general power chained form systems with particular drift-terms, in this section , using Lyapunov method, we design time-varying feedback law , such that the closed -loop systems p—exponential stable.

第一部分考虑的模型为带有模型误差的高阶非完整链系统，我们运用加幂积分器、State-scaling技巧以及基于Back-stepping方法构造出不连续反馈律，从而使得所讨论系统的闭环系统的平凡解全局强稳定；第二部分考虑的模型为带有模型误差的不确定高阶非完整链系统，这一部分我们运用input／state scaling和integrator backstepping方法构造出不连续反馈律，并给出切换策略，使得所对应的闭环系统全局κ-指数稳定；第三部分考虑的系统是形式更为一般的且带有特殊形式漂移项的幂链系统，利用Lyapunov函数方法，设计出时变反馈律，从而使得相应的闭环系统ρ-指数稳定。

Via the sample of erecting a steel girder bridge of 62.8 m span by float tow , the article summarizes the main technique point of the method of assembling tow boat, the process of float dragging beam, the setting up scaffold, disposal of tow and stepping equipment , calculation of float dragging stability, the fastening of hang up pole E3A3 etc, also make suggestion on the dragging equipment selection, the selection of float dragging support point and so on.

通过对跨度为62 8m钢桁梁浮拖架设的尝试，对浮拖架设中的浮拖船结构和组装、浮拖法施工步骤、膺架搭设、牵引和走行设备布置、浮拖稳定性检算、挂杆E3A3加固等主要技术环节进行了总结，并对牵引设备的选用、浮拖支承点位置选择等有关方面提出建议。

Aiming at the influence of the target movement acquired by the frequency-modulated stepping radar on composite range profiles, a fast velocity estimation method is proposed.

针对调频步进雷达目标运动对合成距离像的影响，提出了一种快速的速度估计方法。

And then dynamic process including starting,losing step,reclosing and open-phase operations were analyzed with tine-stepping finite element method and field experiments.

首先研究了同步电机动态分析的共性问题，即局部电磁力、电磁转矩计算与场-路-运动直接耦合求解问题，进而对稀土永磁电机起动、失步、断相、重合闸等动态过程进行时步有限元分析和实验研究。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切