Combined integral filtering system

A combined integral and band-pass filtering technology, which is applied in the direction of impedance network, digital technology network, electrical components, etc., can solve the problems of high delay and high cost, and achieve the effect of smooth signal, less noise and good filtering effect

Inactive Publication Date: 2016-02-17
DONGHUA UNIV
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Problems solved by technology

[0009] (3) The pole of the transfer function of the FIR filter is always at the origin, with more selectivity, and it is completed with a high order. In the case of the same filter design index, the order required by the FIR filter is 5- higher than that of the IIR filter. 10x, high cost, a lot of delay

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Embodiment Construction

[0021] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0022] The embodiment of the present invention relates to a combined integral filter system, which adopts the superposition of combined integral and time-delay links, determines the principle of parameter selection, designs low-pass, high-pass, and band-pass filters respectively, and realizes filtering of industrial acquisition signals.

[0023] Principle of the present invention is:

[0024] (1) A new filtering algorithm prop...

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Abstract

The invention relates to a combined integral filtering system. The combined integral filtering system is characterized in that a first combined integral link and a time delay link are included, and signals from the first combined integral link and the time delay link are superposed to a second combined integral link; the overall transfer function of the combined integral filtering system is shown in the specification, the time delay constants tau1, tau2, tau3 and the constant K are adjusted according to requirements, and low-pass, high-pass and band-pass filtering is achieved. The filtered-out signals are stable, the signals with only one frequency are contained, noise is low, and the signals are smooth.

Description

technical field [0001] The invention relates to the field of industrial control, in particular to a combined integral filter system. Background technique [0002] The environment of industrial control objects is relatively harsh, and there are many sources of interference, such as strong electromagnetic interference, and frequent changes in ambient temperature, especially the signal input channel. The sampling value will be used for data processing and system adjustment. The accuracy of the sampling value is crucial to the performance of the automatic control system. Improvement is significant. Therefore, in order to reduce the influence of interference on the sampling value and ensure the performance of the system, signal filtering is often performed on the sampling value before data processing in order to improve the authenticity and accuracy of the signal, eliminate or reduce various interference and noise, and further improve computer system reliability. [0003] Filte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H17/02
Inventor 任正云陈安钢陈亮陈群奚杰张毅李峰程功
Owner DONGHUA UNIV
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