Sewage BOD control method based on steady-state estimation of PID-RBF and soft measurement of LSSVM
A control method and soft measurement technology, applied in adaptive control, general control system, control/regulation system, etc., can solve problems such as difficulty in BOD online detection, large lag, unsatisfactory control lag effect, etc., and achieve good dynamic quality, Improve the effect of control lag and quick response
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[0034] Specific implementation method: Taking a BOD control system of a sequenced batch activated sludge method sewage treatment as an example, the system implementation is divided into 3 stages:
[0035] Phase 1: Establish a BOD soft-sensing model, select input variables xi such as water inlet BOD, dissolved oxygen DO, sludge concentration, and reaction time, and measure water volume BOD as output yi, collect 600 input and output data, and randomly select 420 groups of them As the training data, the remaining 180 sets of data are used as the test data, the RBF kernel function is selected, and the BOD soft sensor model is used by LSSVM. Specific steps are as follows:
[0036] Step1 collects actual running data x i and y i , put x i and y i Perform normalization [0,1] interval processing;
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