查询词典 ripple

A substantial cut in the stock market like a stone into the lake, there is no proliferation of ripple and ripple into rising, but long to sink Oscillatoria lake.

阿，好像一个石头坠入湖中股市大幅缩减，没有波纹，波纹扩散到上升，但长期下沉颤湖。

In order to overcome the difficulty in estimating the ripple component on dc-side capacitor reference voltage, the modified control algorithm is proposed by ignoring the ripple component. Furthermore, the relation between control performance and damping coefficient is researched. In addition, the reasons of voltage source converter inner-loop control overmodulation are also analyzed. Based on the relation between control performance and VSC inner-loop input saturation, damping coefficient is adjusted on-line by fuzzy logic reasoning so that the trade-off between control accuracy and limitation of VSC inner-loop control overmodulation is solved preferably.

由于在线计算直流电容指令电压波动量十分困难，在控制方法的执行中忽略波动量的影响，简化了控制方法的实现；此外，该方法还研究了所注入的阻尼大小对控制效果的影响以及APF内层控制过调制产生的原因，针对无源性控制律跟踪精度的要求与内层控制过调制限幅条件间的矛盾，通过构造模糊逻辑推理环节实现阻尼系数的在线调整，在满足内层控制限幅条件下确保跟踪精度和补偿效果。

In view of the characteristics of the piston pump's flow ripple, of which the amplitude is large and the harmonic frequences are high, a practical and approximate method for measuring the flow ripple of hydraulic pumps has been advanced.

本文针对较大排量柱塞泵流量脉动幅值大、频宽高的特点，提出了适应于输出通道为等过流面积或近似等过流面积液压泵的流量脉动测试的实用近似方法。

Given the same total flow effusion from holes, the results show that the heat shield gets a higher average cooling effectiveness when the opening ratio is 3% compared with 6%; cooling effectiveness is sensitive to the height of ripple board, the heat shield gets the highest cooling effectiveness when the dimensionless height of ripple board is 1% compared with 2% and 3.33%; but there is a little influence on the cooling effectiveness of the liner with the change of the diameter of holes and the height of cooling passage.

研究表明：在气膜孔出流总量相同的情况下，3%开孔率比6%开孔率的隔热屏平均冷却效率较高；波纹板高度对隔热屏冷却效果影响较大，波纹板无量纲高度为1%比波纹板无量纲高度为2%和3.33%的隔热屏平均冷却效率高；孔径和冷却通道高度的改变对隔热屏冷却效果几乎没有影响。

The DTC system with the rectifier using space vector modulation was studied.A novel input power factor closed-loop control method using hysterias controller was proposed in order to reduce torque ripple based on the analysis of torque ripple.

对整流环节采用空间矢量调制时的直接转矩控制系统进行了仿真研究，在分析转矩脉动的基础上给出了一种输入功率因数滞环比较的闭环控制方法。

The objective of design optimization for the current loop is to maximize the cross-over frequency. The results show the stability is improved and the capability of suppressing the switching noise is far better than the original. The objective of design optimization for the voltage loop is to minimize the gain of the line ripple voltage.As a result the bandwidth minishes obviously and optimization design excelles in restraining the ripple.

主电路以总体积最小为优化目标，优化结果表明电路的体积减少了0.5%；电流环以开环穿越频率最大为目标，优化结果表明电流环的稳定性能得到了改善，开关噪声抑制能力明显优于优化前的；电压环以线纹波电压增益最小为目标，优化结果表明电压环的带宽明显减小，纹波抑制能力远远优于优化前的。

Input voltage ripple and total RMS input ripple current are reduced by synchronized 180 out-of-phase operation.

输入电压纹波和总RMS输入电流纹波减少180同步进行反相操作。

This paper introduces the control principle of the direct torque control system of an asynchronous motor,and proposes a new strategy to solve the problem of the large torque ripple and current ripple.

本文介绍了直接转矩控制系统的控制原理，并针对基于直接转矩控制的异步电动机运行时存在较大的电流及转矩脉动问题，提出一种新的控制方案，并基于Matlab 6。

This paper introduces the control principle of the direct torque control system of an asynchronous motor, and proposes a new strategy to solve the problem of the large torque ripple and current ripple. The Matlab 6.5 simulation shows that it can solve the problem efficiently.

本文介绍了直接转矩控制系统的控制原理，并针对基于直接转矩控制的异步电动机运行时存在较大的电流及转矩脉动问题，提出一种新的控制方案，并基于Matlab 6.5对这种新方法进行仿真，仿真结果表明该方案能有效的解决电流及转矩脉动的问题。

She put tipple on the nipple for ablactation and caused ripple effect .

为了断奶，她把烈酒抹在奶头上，结果引起了连锁反应。

It was just a normal day of school

那只是上学的普通一天

Which is a very good reference in this issue.

这是一个在这个问题上很好的参考。