Method and device for identifying frequency domain amplitude characteristic of control object

A technology for controlling objects and frequency-domain amplitudes, which is applied to electric controllers and controllers with specific characteristics, etc., can solve the problem that the normal production of process technology is greatly affected, the algorithm of time-domain identification is complicated, and the technology of model identification is difficult to be extensive. Application and other issues

Active Publication Date: 2012-04-25
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
View PDF6 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing object model identification technology is mainly based on the identification of the characteristics of the process object model in the time domain, and there are three main problems: First, the implementation algorithm of the time domain identification is complicated, so it is difficult to implement it in the existing DCS ( Distributed Control Sy

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for identifying frequency domain amplitude characteristic of control object
  • Method and device for identifying frequency domain amplitude characteristic of control object
  • Method and device for identifying frequency domain amplitude characteristic of control object

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0030] figure 1 It is a flow chart of the method for identifying the frequency-domain amplitude characteristics of the control object of the present invention, including:

[0031] S101: adding a spectrum identification signal to an input signal of a regulation loop composed of a regulator and a control object;

[0032] S102: Filter the output signal of the regulator to obtain a reference frequency signal, where the reference frequency signal includes the same spectrum component as the spectrum identification signal;

[0033] S103: Filter the output signal of the control object connected to the output terminal of the regulator to obtain a process frequency signal, where the process frequency signal contains the same spectrum component as the spectrum identificatio...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method and a device for identifying the frequency domain amplitude characteristic of a control object. The method comprises the following steps of: adding a frequency spectrum identification signal into an input signal of a regulating loop which consists of a regulator and the control object; filtering an output signal of the regulator, and acquiring a reference frequency signal; filtering the output signal of the control object which is connected with an output end of the regulator, and acquiring a process frequency signal; and comparing the amplitude of the reference frequency signal with the amplitude of the process frequency signal, and acquiring the frequency domain transfer amplitude coefficients of the control object. By the invention, the frequency domain amplitude characteristic of the control object can be identified in a frequency spectrum resource saving mode, not all continuous frequency spectrum resources of a thermo-technical object are required to be used, a limited number of non-continuous single-frequency point frequency spectra are required to be used, single-frequency point frequency spectrum signals are filtered by using a filter, and a majority of interference signals are eliminated.

Description

technical field [0001] The invention relates to the technical field of thermal control, in particular to a method and device for identifying frequency-domain amplitude characteristics of a control object. Background technique [0002] Thermal control objects in thermal power plants have the characteristics of large inertia, pure delay, and time-varying characteristics, especially the characteristics of the control objects are difficult to understand in depth and accurately, making the system difficult to control. How to effectively overcome various adverse effects, thereby improving the regulation quality of thermal control loops, has always been one of the goals constantly pursued in the field of thermal control. In order to improve the control quality of thermal objects, it is very important to identify the control object model. [0003] The existing object model identification technology is mainly based on the identification of the characteristics of the process object m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G05B11/42
Inventor 李军高玮杨宗秋万文军
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap