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A parameter adjustment system and method of a practical differentiator

A parameter adjustment system, a differentiator technology, applied in the direction of electric controllers, controllers with specific characteristics, etc., can solve the problems of output signal interference, noise interference amplification of the differentiator, and the actual differentiator can not work normally, and achieve online work. low impact effect

Active Publication Date: 2022-05-10
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the practical application of the differentiator, there will be noise interference, which is not fully reflected in the ideal differentiator (Ideal differentiator, ID), and the ideal differentiator cannot be realized in actual physical applications
Structurally, performing some form of low pass filter (LPF) on the output of the ideal differentiator (Ideal differentiator, ID) can get some form of actual differentiator (Actual differentiator, AD), but the actual differentiator The device has the problem of noise interference amplification
When the noise interference level is high, such as high noise amplitude gain (Noise amplitude gain, NAG), it will cause serious interference to the output signal of the actual differentiator, and even cause the actual differentiator to not work normally.

Method used

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  • A parameter adjustment system and method of a practical differentiator
  • A parameter adjustment system and method of a practical differentiator
  • A parameter adjustment system and method of a practical differentiator

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Embodiment Construction

[0097] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0098] It should be understood that the step numbers used herein are only for convenience of description, and are not intended to limit the execution order of the steps.

[0099] It should be understood that the terminology used in the description of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in this specification and the appended claims, the singular forms "a", "an"...

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Abstract

The invention discloses an actual differentiator parameter adjustment system and method, and relates to the technical field of thermal power unit process control. By constructing two parallel actual differentiators and applying noise interference excitation to an actual differentiator, the noise amplitude gain process is obtained. Through the feedback process control, the second-order inertial filter parameter control value is the control quantity, and the noise amplitude gain is controlled at The preset noise amplitude gain is given, and the first and second order inertial filter parameter control values ​​are obtained by performing first-order inertial filter tracking, so that the noise amplitude gain of the first actual differentiator automatically tracks the noise amplitude gain of the second actual differentiator. The present invention adjusts the parameters of the first actual differentiator to the preset noise power gain setting through automatic tracking control, and controls the performance of the first actual differentiator in the best state.

Description

technical field [0001] The invention relates to the technical field of thermal power unit process control, in particular to a parameter adjustment system and method of an actual differentiator. Background technique [0002] In the field of thermal power unit process control, differentiators are widely used. The differentiator provides a basic look-ahead mechanism, which is of great significance for improving the performance of process control. However, in the practical application of the differentiator, there will be noise interference, which is not fully reflected in the ideal differentiator (Ideal differentiator, ID), and the ideal differentiator cannot be realized in the actual physical application. Structurally, performing some form of low pass filter (LPF) on the output of the ideal differentiator (Ideal differentiator, ID) can get some form of actual differentiator (Actual differentiator, AD), but the actual differentiator There is a problem of noise interference amp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B11/42
CPCG05B11/42
Inventor 陈锦攀史强李军
Owner GUANGDONG POWER GRID CO LTD