查询词典 acceleration

Combining the precise exponential matrix calculation with the basic assumptions of constant average acceleration method of the Newmark family, explicit integral method with Taylor series and its algorithm are put forward.

将Newmark-β法中常平均加速度法的基本假定与精细指数算法结合，根据指数矩阵的Taylor级数展开式，提出了动力方程的显式级数解，并设计了相应的时程积分算法。

By simplifying the motorcycle's entity structure model and using the iterative data of a road simulator as the road simulation actuator,it calculates and analyzes values of acceleration's average square root for motorcycles,then evaluates their comfort ability by the relative standards.

方法是将摩托车实体结构模型进行简化，加入道路模拟的迭代数据作为模拟路况的激励，在ADAMS/PostProcessor的界面上进行加速度均方根值的计算和分析，采用相关评价标准对其舒适性进行分析评价。

Firstly, the average line of the acceleration is fitted by cubic polynomial. Then, the long period baseline waving problem, which is still existed in the integral velocity and displacement after the first optimization, is secondly optimized by the recursive method of SDOF system.

首先以3次多项式来拟合加速度的均值线；再对一次优化后的积分速度、位移时程仍存在的长周期基线波动问题，运用单自由度地震动力反应递归法进行二次优化。

Drift Angle, Speed, Peak Drift Angle, Speed at Peak Drift, Current Sector, Sector Score, Total Score, Peak Longitudinal Acceleration, Average Speed

漂移角，速度，最大漂移角，最大漂移角时的速度，当前路段，路段分数，总分，最大纵向加速度，平均速度。

In golf swing, it takes 0.8 s from the end of back swing to impact, if the average angular acceleration is 1.5 rad/s2, what is the angular velocity at the impact?

举例 examples ：1。高尔夫挥杆，自后往前至击球点费时0.8秒，已知平均角加速度为1.5rad/s2，求在击球点的速度为何？

According to the statistical regression, the average acceleration response spectra of the elect earthquake records are satisfied with the standard response spectrum by new code. The result which is obtained by combining the displacement average spectra and the standard deviated spectra are satisfied with the simulate displacement response spectrum by new code. 2. Compare two different calculated methods of inelastic demand spectrum based on the factor of yield strength and equivalent damping ratios.

通过统计回归发现，地震动加速度平均反应谱能较好地拟合规范设计反应谱，而地震动位移谱平均值+1 倍标准差能较好地拟合规范拟位移谱；②对依据屈服强度系数计算弹塑性需求谱和依据等效阻尼比计算等效弹塑性需求谱的方法进行了对比。

This paper,by means of the unified model of vehicle-track systems,performs a simulating calculation of the railway track and vehicle,caused by track stiffness change.On the basis of simulation calculation,this paper tries to analyze the influence of track stiffness change on axle box acceleration with wavelet and power spectrum density.

据此运用车辆-轨道垂向系统统一模型对不同轨道刚度情况下引起的车辆和轨道响应进行了仿真计算，并对计算结果进行小波分析和功率谱处理，主要分析了钢轨、轨下垫层、道床刚度的变化对客车轴箱加速度的影响，同时对用客车轴箱加速度的变化反推道床的刚度状态进行了探索。

Railway track ; sleeper ; ballast ; axle box acceleration ; wavelet analysis

轨道；垫层；道床；轴箱加速度；小波

It is shown from the results that the acting force and vibrating acceleration are increased due to its axle load, however, the dynamics interaction between 25 t load wagon and the turnout can be improved by the rubber stack in its axle box, especially in the index such as derailment coefficient, reduction rate of wheel load, opening size of tongue rail and point rail, which is almost equal to the dynamics of 21 t axle load wagon.

结果表明尽管轮轨力和振动加速度因轴重增加而相应增大，但由于25t轴重货车在轴箱处采用橡胶堆，使它与道岔之间的动态相互作用有所改善，尤其是脱轨系数、减载率、尖轨和心轨前端开口量等指标上，与21t轴重货车引起的系统振动值基本一致。

A back electromotive force observer is constructed to acquire the information of speed as well as acceleration. By selecting the time constant or observer gain properly, the current command reduction characteristics can be adjusted freely in some range.

其中的反电动势观测器能方便地获得速度和加速度信息，通过适当调整观测器的时间常数和增益，就能使驱动电流指令值在一定范围内自由调解以达到控制目的。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"