查询词典 ripple

The physical model of water is built on the basis of 2D Navier-Stokes equation. Recurrence formula of water surface height is improved to smooth the water ripple.

然后基于牛顿-欧拉动力学方程，结合实验中的结果，研究了仿生机器鱼在虚拟水池中运动的三维仿真方法。

In order to resolve the problem of large switching loss at rated current, a constant current ripple control method is proposed along with varied frequency control.

同时，针对额定电流输出时开关损耗应力较大的问题，提出了电感电流恒脉动的变频控制方法。

Due to the large torque ripple of direct torque control in low speed range,a torque angle adjustor based on fuzzy neural network and PI control was adopted to improve the control effect.

针对直接转矩控制低速时转矩脉动大的问题，采用基于模糊网络与PI控制结合的转矩角调节器来改进控制效果。

Electric machinery ; Permanent magnet synchronous motor ; Direct torque control ; Ripple torque ; Fuzzy modulating

电机；永磁同步电机；直接转矩控制；脉动转矩；模糊调节

SVPWM based on the realization of the permanent magnet synchronous motor simulation, simulation results than traditional direct torque control torque ripple small, fast response, good robustness.

详细说明：实现了基于SVPWM的永磁同步电机仿真，仿真结果比传统直接转矩控制转矩脉动小，响应快，鲁棒性好。

Due to hexagon flux control or six-section circle-flux used in traditional direct torque control,it is easy to form large torque ripple twelve section control method of voltage select table and the implementation was presented.

由于传统的直接转矩控制采用六边形磁链控制或六区间的圆形磁链控制，容易造成转矩脉动大。

An optional feature allows for current limitation at start up to protect surrounding equipment, which can come in handy for things such as improving the life of a battery pack in a medical respirator, while the internal current ripple control minimizes increases in motor heat.

一项在启动后限制电流以保护周边设备可选功能是很有用途的，例如用内部电流脉冲将电动机散发的热量控制在最小以增加医疗呼吸机的寿命。

Electric machinery ; BLDCM driven systems ; Rate smoothness ; Force ripple ; Robust repetitive control

电机；无刷直流电机驱动的系统；速率平稳性；力矩波动；鲁棒重复控制

The papers emphases are two aspects: One is reducing the torque ripple using advanced control methods and the other is the research of the speed sensor-less schemes.

本文主要围绕采用先进控制方法抑制转矩脉动和直接转矩无速度传感器算法两方面来进行。

The induction motor stator-flux-oriented vector control scheme not only reduces the big dependence of its performances on the rotor parameters, such as in the rotor-flux-oriented vector control, but also eliminates the torque ripple produced by Bang-Bang control in Direct Torque Control. So the SFO vector control is a high-performance and robust induction motor control scheme.

异步电机按定子磁场定向的矢量控制克服了按转子磁场定向的矢量控制系统对转子参数的依赖性，又没有直接转矩控制中的砰—砰控制带来的转矩脉动，是一种鲁棒性良好的高性能异步电机控制策略。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。