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Measuring method of on line key paramotor based on new type generalized predictive control

A generalized predictive control and key parameter technology, which is applied in the direction of measuring devices, instruments, special recording/indicating devices, etc., can solve problems such as zirconia measurement lag, failure to meet the requirements of time domain adaptation between measurement and control, and measurement lag. Achieve the effect of reducing computational complexity, realizing real-time online soft measurement, and increasing stability

Inactive Publication Date: 2006-04-12
YANSHAN UNIV
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Problems solved by technology

Due to the time lag of the reaction process, the limitation of the installation position, the characteristics of the instrument itself, etc., these parameters cannot meet the requirements of time domain adaptation for measurement and control
At present, one of the important reasons why some high-level theoretical research cannot be applied to engineering practice is that the influence of this factor is ignored.
[0006] The main disadvantages of zirconia in measuring the oxygen content of flue gas are: first, poisoning occurs from time to time, resulting in inaccurate measurement; second, the measurement lag is caused by the transition process of combustion reaction and the time delay of flue gas circulation; third, zirconia itself Time lag causes measurement lag
In fact, the current engineering zirconia measurement of oxygen content can only reflect the real results of the working conditions under steady state conditions, similarly, SO 2 The same problem exists in the measurement of

Method used

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  • Measuring method of on line key paramotor based on new type generalized predictive control
  • Measuring method of on line key paramotor based on new type generalized predictive control
  • Measuring method of on line key paramotor based on new type generalized predictive control

Examples

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Embodiment

[0113] Embodiment: On-line measurement method of key parameters in boiler combustion process based on novel generalized predictive control.

[0114] 1. Establishment of the flue gas oxygen content measurement and control model

[0115]Keeping the best state and economy of boiler combustion process is an important task of automatic control of boiler combustion process. During boiler operation, the ratio between the amount of air entering the boiler and the amount of fuel must be well controlled. If the ratio of the amount of air to the amount of fuel is relatively small, the chemical incomplete combustion loss will be large, otherwise, the exhaust heat loss will increase. In order to keep the boiler in the best combustion condition, the ratio of the air volume to the combustion volume must be appropriate. This ratio is called the excess air coefficient, and the value should be between 1.20 and 1.30. There is a definite (single value) functional relationship between the oxygen...

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Abstract

An in-line key parameters measuring method based on generalized prediction control for the process control of boiler or different industrial furnaces features that an in-line measuring model is disclosed.

Description

technical field [0001] The invention relates to the field of process industry measurement and control, and is an online key parameter measurement method based on novel generalized predictive control. Background technique [0002] In the field of process industry, especially in the thermal industry, there are a large number of key parameters that are difficult to measure. Generally, it can only be judged by manual means or manual experience. It is necessary to realize online key parameter measurement. Therefore, at present, the soft sensor model is mainly used for real-time measurement, that is, by measuring auxiliary variables that are easy to detect, and estimating variables that are difficult or even impossible to measure based on the estimation model. [0003] At present, the measurement equipment in the thermal industry has low precision, large investment, short service life, and large measurement lag, making it difficult to realize online real-time measurement and contr...

Claims

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Application Information

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IPC IPC(8): G01D3/00G01D21/02
Inventor 郑德忠何群
Owner YANSHAN UNIV
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