Fuzzy predictive control system and method for power supply for electrostatic dust removal

Abstract

The invention discloses a fuzzy prediction control system and method for a power supply for electrostatic dust removal. The analog signal acquisition unit converts the collected analog signal into an electrical signal, performs filtering and other adjustments, and then outputs it to a T-S fuzzy controller. The T-S fuzzy The controller first identifies the antecedent and conclusion part of the T-S fuzzy model according to the conditioned signal, obtains the T-S fuzzy model, then converts the T-S model into a step response model, and outputs the step response model to the prediction The controller 23 is used as a predictive model; the predictive controller uses the step response model as a predictive model to perform rolling optimization and feedback correction, and output the control signal to the digital logic unit; the control signal is used as a drive signal for controlling the drive unit after passing through the digital logic unit. Fuzzy predictive control of the power supply; solves the problem that the electrostatic precipitator system is difficult to establish a mathematical model, and reduces the dependence of the predictive controller on the precise mathematical model.

Description

technical field [0001] The invention relates to the technical field of high-voltage electrostatic precipitation, in particular to a fuzzy prediction control system and method for a high-frequency high-voltage power supply for electrostatic precipitation. Background technique [0002] The high-voltage electrostatic precipitator technology can process dust with a wide range of particle size and small pressure loss, and can handle high-temperature gas. The efficiency of electrostatic precipitator mainly depends on the driving speed of dust particles, and the driving speed increases with the increase of the charging field strength E and the dust collecting field strength Ep (for a single-zone electrostatic precipitator, E=Ep). In order to achieve higher dust removal efficiency, it is necessary to increase the electric field strength as much as possible. The field strength is related to the corona current, which is proportional to the plate voltage. The control of the electric ...

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Problems solved by technology

[0005] The object of the present invention is to provide a fuzzy predictive control system and control method of a high-frequency high-voltage power supply for electrostatic precipitator, to overcome the problem that it is difficult to establish an accurate mathematical model due to the non-linearity, time-varying, and hysteresis of the electrostatic precipitator power supply; At the same time, in the process of electrostatic dust removal, the problems of flashover and low dust removal efficiency caused by the change of the dust load peculiar to the dust collector are overcome to ensure that the dust removal system works normally, the working voltage is stable, and the dust removal effect is stable, and the design cost of the controller is relatively low. Low

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