查询词典 harmonics

I like to change speeds is because it does something to the timbre of sound that I like, by bringing upper harmonics into hearing range, by halving the frequency of them.

我所以会喜欢去变更速度是因为这麼做会对音质做某种我喜欢的改变，例如把高音降到听得到的范围内，因为已把它的频率减半。

When the current which is needed to be compensated oversteps what it can support,the inverter compensates reactive power and harmonics at the same time.The paper gives a...

仿真结果证明了电网谐波与闪变综合抑制技术的正确性，设计的装置硬件实现简单、参数调整方便，具有较好的发展前景。

The amount of equipment and industrial processes which are sensitive to insufficient voltage quality, such as harmonics and sags, is increasing.

随着越来越多电子设备的使用，对电压质量的要求也越来越高。解决供电系统中的谐波及电压突变等问题，提高供电质量已迫在眉睫。

Through theoretic reckoning and simulating analyzing, several control strategies for shunt APF were compared and chose ip-iq arithmetic ofthe instantaneous reactive power theory control strategy as the right scheme to produce the instructing current. Based on it, some new control arithmetic was subjoined to suppress the resonance in system and balance the dc side capacitor voltage. Two topologies of main circuit were compared and chose the three-phase voltage-source converter with a split-capacitor as its main circuit structure. The numerical scales of the dc side capacitor and inductance of reactors were calculated. The high-pass filters were designed to eliminate effectively the highfrequency harmonics produced by APF.

通过理论计算和仿真分析，比较了并联型APF的几种控制策略的优点和缺点，从中选择瞬时无功理论控制策略i_p-i_q计算方式为指令电流产生的算法，并在此基础上增加了抑制系统谐振和平衡直流侧电容电压的控制；比较了并联型APF主电路的两种常见形式，从中选择了三相电压型变流器的主电路形式；算出适合该APF的直流侧电容和出线电感的参数；设计出能有效消除APF产生的高次谐波的高通滤波器。

When two axes make the synchronized reverse rotation, on each instantaneous two axis eccentric qualities produce the centrifugal force of inertia, always mutually counterbalances along x-x force component, but always mutually superimposes along Y-Y force component, this has formed the sole this direction simple harmonics strength.

两轴作同步反向回转时，每一瞬时两轴上偏心质量所产生的离心惯性力，沿x-x方向的分力总是互相抵消，而沿Y-Y方向的分力总是相互叠加，这就形成了单一的该方向的简谐力。该力作用在筛箱上，驱动筛箱作轨迹为直线的往复振动。

Thus, the response of each harmonic can be calculated first, and then the whole response can be achieved by superimposing the responses of all harmonics.

从流场求解到响应求解，为工程应用初步建立起了一个尾流激振情况下叶片振动应力预估的半经验方法。

It is observed that there are six ways for amalgamation of four vortices. Therefore, the evolution of vortices can be controlled positively by superimposing multi-harmonics and changing their phase differences.

计算结果表明：四涡的合并存在6种形式，因此，可以通过施加多级次谐波并改变它们之间的相位差来主动控制拟序涡的发展和演变。

Therefore,the evolution of vortices canbe controlled positively by superimposing multi-harmonics and changing their phasedifferences

可见，通过施加多级次谐波并改变它们之间的相位差可以达到主动控制拟序涡的发展和演变的目的。

In power converters, unbalances generate undesirable DC ripple and non char ac teristical harmonics in the ac side.

在电力变换器中，不平衡会产生不希望的直流波动以及交流侧无特征的谐波。

And the traditional passive filter's function is also limited for avoiding the resonance and harmonic enlarging. The auto-compensator and harmonics shielding converter transformer can be used to solve these problems, which is based on the principle of the winding ampere and turn's balance. This paper elaborates this kind of transformer filter mechanism. In the view of the HVDC system, a new winding connection plan is proposed, and the filter optimization model is created.

作者基于自耦补偿与谐波屏蔽的换流变压器，针对某实际的HVDC模拟系统，提出了与该变压器配套的滤波装置的接线方案，并将外罚函数法和遗传算法相结合，对上述滤波装置进行优化设计，建立了以初期投资最小为优化目标、满足系统无功需求的滤波器优化配置的数学模型。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。