阶跃函数

In allusion to dynamic nonlinear large-scale industrial processes, to bring up gained the method of decentralized identification for the strong consistency estimates of the divisible steady-state models, it is used that property of polynomial can infinitely approach to the nonlinear function and in optimization processes use step signals as input signals, the divisible steady-state models of dynamic nonlinear large-scale industrial processes, and the cognizable conditions are obtained.

针对动态非线性大工业过程，提出了得到其可分稳态模型强一致性估计的分散辨识方法；利用多项式对非线性函数的无限逼近的性质和优化过程中设定点的阶跃信号作输入激励信号，获得了动态非线性大工业过程的可分稳态模型和可辨识的条件。

Based on the test system of unloading valve,the step response method is used to acquire the step response curve of this system.

以卸荷阀性能测试系统作为研究对象，利用阶跃响应法获得系统的阶跃响应曲线并求得了系统的传递函数。

The identified two orders models under three different load conditions are validated by step disturbance method and self-relation function method.

对所得三种不同负荷水平下的二阶离散型水轮机模型，应用阶跃扰动法和自相关函数法进行检验。

Beyond that, the powered focus does not have a fine step function, so it is easy to overshoot the target.

除此之外，动力，焦点不会有一个美好的阶跃函数，所以很容易冲的目标。

Combining Newton two state model with step function,a u nified dynamic model between separation and collision process for the linkage me chanism with clearance connections,and with variable rotating speed of the cran k was developed in the paper.

将阶跃函数与牛顿二状态相结合，考虑曲柄非匀速运转，对含间隙平面连杆机构的副间分离与碰撞过程建立了动力学统一模型，利用该模型，引入粘弹性阻尼被动控制技术，通过算例分析了被动控制的效果。

From the computed results, the following preliminary conclusions can be drawn: the time domain analysis of the buffeting response is feasible by using the indicial function formulae of the self—exciting force; usually, the linear analysis method will overestimate the buffeting response.

由本文的计算结果还可得出如下初步结论：利用自激力的阶跃函数表达法对抖振响应进行时域分析是可行的；通常的线性分析方法将偏大地估计抖振响应。

At the same time, the self—exciting force with indicial function formulae put forward by R. H. Scanlan is extended to the three— dimension analysis and separated into the quasi—steady part and the part related to the past history of the structure. The former is interpreted by the aerodynamic damping and aerodynamic stiffness, the later, by the load. Then, the self—exciting force related to the structure motions can be easily introduced.

然后，将Scanlan提出的自激力的阶跃函数表达方法推广运用于三维分析，并将自激力分为似定常部分和与过去响应历程有关的部分，进而分别用气动阻尼、气动刚度和外荷载的形式来描述，从而实现了引入与结构运动相关的自激力。

Presents a kind of modeling for chain grate stoker based on step signal input.

以20 t/h链条炉排工业锅炉为对象，采用阶跃响应法获取现场试验数据，再通过阶跃响应曲线求出锅炉对象的传递函数。

The relationships between welding pool width, wire extension and welding parameters including welding current duty ratio, base current, peak current, welding speed and wire-feeding speed were studied. Through large numbers of welding experiments, aluminum alloy pulsed MIG welding dynamic process were identified by the curve fitting method, and the mathematical models between welding current duty ratio, base current, welding speed, wire-feeding speed and wire extension were obtained, succeeding the model between the above parameters and weld pool width.

介绍了铝合金MIG焊焊接电流占空比、基值电流、峰值电流、焊接速度、送丝速度对熔宽的影响规律，并在其基础上，通过平板堆焊试验研究了这些参数对焊接干伸长的影响规律；在铝合金机器人脉冲MIG焊平板堆焊过程各焊接参数与正面熔宽之间的传递函数的基础上，采用铝合金平板堆焊阶跃试验，利用曲线拟合法辨识了铝合金机器人脉冲MIG焊动态过程传递函数，建立了焊接电流占空比、基值电流、焊接速度、送丝速度与焊接干伸长之间的对象数学模型。

The relations between the potential difference and the discharging time when the discharge current is a step function as well as a step function containing high frequency vibrations, the relations between one-dimensional and two-dimensional spark locations and potential difference based on the thin wall model and the thick wall model have been studied.

仿真研究了放电电流为阶跃函数以及含高频振荡时电位差与放电时间的关系；基于薄壁模型和厚壁模型，仿真研究了电极下表面一维放电点位置和二维放电点位置与电位差的关系；对于确定的电位差，仿真研究了放电点位置的分布情况，说明两点输入不能唯一地检测出放电点位置，从而引入四点输入检测的思想。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。