Multivariable decoupling control method applied to soil vapor extraction equipment

A multivariable decoupling and gas phase extraction technology, applied in the field of multivariable decoupling control of soil gas phase extraction equipment, can solve the problems of independent PID control instability, concentration influence, etc., to reduce the difficulty of parameter adjustment and increase stability and the effect of service life

Active Publication Date: 2022-02-08
BEIHANG UNIV
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Problems solved by technology

[0004] The object of the present invention is, in order to solve the above-mentioned deficiencies in the prior art, propose a kind of multi-variable decoupling control method applied to soil gas phase extraction equipment, this method can solve independent PID control in the prior art unstable, Problems affecting concentration

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  • Multivariable decoupling control method applied to soil vapor extraction equipment
  • Multivariable decoupling control method applied to soil vapor extraction equipment
  • Multivariable decoupling control method applied to soil vapor extraction equipment

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[0025] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "another end" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, use a specific Azimuth configuration and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood ...

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Abstract

The invention discloses a multivariable decoupling control method applied to soil vapor extraction equipment. The method comprises the following steps: adding a decoupling matrix D (s) between a PID control matrix Gc (s) and a process model matrix G (s); and calculating, correcting and separating the fan rotating speed control quantity and the valve opening control quantity through the decoupling matrix D (s), and issuing the fan rotating speed control quantity and the valve opening control quantity to an equipment actuator. According to the method, the structure of the existing equipment can be kept unchanged, only the upper computer needs to be processed, the control value generated by the original PID equipment is calculated and corrected through the decoupling matrix, and then the control value is issued to the equipment actuator, so that decoupling control can be realized on the premise of not changing the structure of the equipment, the parameter adjustment difficulty of the PID is reduced, and the system stability and the service life are improved.

Description

technical field [0001] The invention relates to the technical field of decoupling control for soil gas phase extraction, in particular to a multivariable decoupling control method applied to soil gas phase extraction equipment. Background technique [0002] Soil steam extraction is a technology that extracts the gas in the soil through negative pressure and separates volatile organic pollutants from the soil. The solubility of the extracted pollutants needs to be mixed with air to reduce the concentration of pollutants, and the subsequent treatment can only be carried out after reaching the safety standard. The classic PID control strategy is to control the flow and concentration within the required range through two independent closed-loop controls. In fact, in the process of introducing air mixing, not only the concentration is affected, but also the flow rate of soil vapor extraction. This point is not considered in the independent PID control, so the stability and robu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/06G06F17/16
CPCB09C1/06G06F17/16Y02P90/02
Inventor 石岩刁茁杨丽曼许少峰王一轩王娜孙治博牛燕霞蔡茂林
Owner BEIHANG UNIV
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