The filter is composed of an active filter (AF) and a passive filter (PF).

滤波器是由有源滤波器(AF)和无源滤波器(PF)串联组成。

This method is also suited to design approximation function of passive filter.

这种方法同样适用无滤波器的近似函数设计。

So EMI passive filter of motor system is composed by mains filter and output side filter.

电机系统emi无源滤波器由电源滤波器和输出侧滤波器组成。

These passive components can be used as basic building elements to make a passive filter.

这些无源元件是构成无源滤波器的基本元件。

Governing harmonic with Active Power Filter has better compensation performances than with Passive Filter.

采用有源电力滤波器治理谐波比无源滤波器有更优越的补偿性。

The advantages of passive filter low cost, stable operation, technology is relatively mature and large capacity.

无源滤波的优点为成本低，运行稳定，技术相对成熟，容量大。

Stow net, which is a kind of passive filter fishing gear, was seldom carried cut research on the selectivity model.

作为一种被动性的过滤型渔具，对张网渔具本身的选择性特点和选择性模型研究很少。

Passive filter because of its simple structure, easy maintenance, and low cost is still commonly used means of filter.

无源滤波器由于其结构简单、维护方便、造价低廉等优点成为目前普遍采用的一种滤波手段。

It is not only different from the traditional passive filter way but also different from the existing active filter way.

它既有别于传统的无源滤波方式，也有别于现有的有源滤波方式。

A novel structure of parallel hybrid active power filter is proposed. lt consists of Passive filter (LC) and active power filter (APF).

采用了一种新型混合型有源滤波器的结构，它由LC无源滤波器和有源电力滤波器(APF)共同组成。

When the passive filter is applied in harmonic suppression, the harmonic current may flow through the circuit breaker and filter branches.

采用无源滤波器治理谐波时，谐波电流会在母联断路器和各支路间流动。

First, the paper researches impedance character of LC passive filter and the influence for reactive power. And deduces parameters of LC passive filter.

论文首先研究了LC无源滤波器的阻抗特性和对无功补偿的影响，并推导了LC无源滤波器参数的选取计算方法。

Several new topologies of the HAPF system are proposed which come from the study on impedance-frequency characteristic of the passive filter of HAPF system.

文章从滤波器阻抗频率特性的角度出发，提出了几种具有广阔应用前景的新型混合有源滤波器拓扑。

As a new filtering device used in single phase circuit, hybrid type series active power filter is a combined system of shunt passive filter and series active filter.

串联混合型单相电力有源滤波器是串联有源滤波器与并联无源滤波器组合而成的单相电路新型滤波装置。

Concerning the problem of instability and low accuracy of passive filter in underwater target tracking, a modified adaptive extended kalman filter (MAEKF) algorithm is presented.

针对在被动方式下进行水下目标跟踪容易导致滤波发散和收敛精度不高的问题，介绍了一种改进的自适应推广卡尔曼滤波算法。

At present large capacity and demand compensation for detailed areas is generally the use of active plus passive hybrid, that is, a large-capacity passive filter compensation, active fine-tuning.

目前在容量大且要求补偿细致的地方一般使用有源加无源混合型，即无源进行大容量的滤波补偿，有源进行微调。

A novel single - phase parallel hybrid power filter is presented in this paper, which can eliminate drawbacks of LC passive filter and the conventional voltage source parallel hybrid power filter.

本文针对LC无源滤波器和传统的电压源型并联混合电力滤波器的缺点，提出了一种新型的并联混合电力滤波器。

Concerning the problem to instability and low accuracy of the passive filter on bearings-only target tracking, a modified adaptive Extended Kalman filter algorithm on polar coordinate is presented.

在水下被动目标跟踪系统中，直角坐标系下的扩展卡尔曼滤波器容易发散而导致滤波精度很差。

These modes include centralized elimination, special transformer on the spot , passive filter on the spot and active filter on the spot. The passive filter mode is mature and deserves to popularize.

谐波治理主要有电网集中治理模式、特殊变压器就地治理模式、改变整流变压器接线、无源滤波装置就地治理模式及有源滤波装置就地治理模式，其中无源滤波模式较为成熟，值得推广。

Considering limitations of the passive power filter (PPF), a reform method of PPF for low voltage power grid was presented.

针对无源滤波器的缺陷，提出了一种低压电网无源滤波器改造方案。

To use the passive powered filter with TCR can enlarge the capacity of power source system, and reduce its cost.

采用晶闸管相控电抗器（ TCR）的无源滤波器可以增大电源系统的容量，降低成本；

The variable impedance scaling method for design of SCN has been improved in the Paper, the resulting is that the analogue filter can be realized by Passive SCN.

改进了目前采用的开关电容网络阻抗标度设计法，使模拟滤波器可以用无源开关电容网络完成。

Passive measure include: filter, Fielding, earthing, bypass, decoupling etc.

被动的方法具体有：滤波、屏蔽、接地、去耦、旁路等。

The methods of harmonic suppression were introduced, such as adopting passive power filter (PPF), active power filter (APF), hybrid filter and harmonic protective device (HPD).

介绍了谐波治理的方法，即采用无源滤波器、有源滤波器、混合型滤波器及谐波保护器，举例说明了谐波保护器的应用。

Fiber grating which is a passive fiber parts, has been used widely in the field of fiber communication and fiber sensing because it can form filter or reflector in narrow strap.

光纤光栅作为光纤无源器件，利用其能在窄带内形成滤波器或反射镜这一特性，在光纤通信、光纤传感等领域得到了广泛的应用。

To improve the performance of passive tracking, the Gaussian sum particle filter (GSPF) was proposed.

为提高被动跟踪性能，提出了一种高斯和粒子滤波方法。

A passive loop filter scheme and the design method of the filter for current charge pump PLL frequency synthesizer chip are given in the paper.

针对电流型电荷泵PLL频率综合器芯片，提出一种称为极值相位裕量的无源环路滤波器方案和设计方法。

The Unsctened Kalman Filter (UKF) for nonlinear system is applied in passive locating by single station, and the general UKF is improved according to the specific application.

将一种适用于非线性系统的UKF应用于单站无源定位，并结合具体应用背景，对通常的UKF作了适当的改进。

This paper presents the performance analysis of a hybrid filter composed of a passive and active filters connected in series.

对由无源滤波器和有源滤波器串联而成的混合型滤波器的性能进行了分析。

The traditional method of Kalman filter for passive sonar target track association is limited in practice.

传统的目标航迹关联方法卡尔曼滤波法在实际应用时有局限性。