Complexity control theory based on the model depict the complexity of the controlled object more accurately through research model and data-driven control theory of Internet of things is more urgent to be explored through the data to find out the system of internal control mechanism. Look from the appearance, the complexity of data including a lot of sample, high dimension, strong time-varying factors. The representation of implicit information is huge amounts of data redundancy, high-dimensional data clustering features, the time-frequency characteristics of time-varying data, etc. At present, the data-driven control theory research is just beginning [1-3], the scientific problem is the lack of unified definition and theoretical framework. This paper will analyze the sewage treatment system of some sewage treatment plant, making the internal scientific questions are more specifically.
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