Non-Minimal Realization State Space Linear Quadratic Control Method for Chemical Process

Abstract

The invention relates to a linear quadric form control method for non-minimum realization of a state space in a chemical process. At present, parameter control completely depends on the experience of technicists by adopting the conventional simple control means, but the control effect is poor. The method provided by the invention comprises steps of by means of data acquisition, procedure processing, predicting mechanism, data drive, optimizing and the like, establishing procedure model on the basis of actual data in the chemical process, digging out basic procedure characteristics; and then establishing a linear quadric form control loop on the basis of the transfer function procedure model; and finally, through calculating parameters of a linear quadric form controller, implementing linear quadric form control on a procedure object. According to the linear quadric form control method, errors between the ideal technological parameter and the real technological parameter can be reduced effectively, the fault of the traditional controller is further made up, and meanwhile a control device is in an optimal state to ensure that the technological parameter in the production process is strictly controlled.

Description

technical field [0001] The invention belongs to the technical field of automation, and relates to a non-minimum realization state space linear quadratic control method of a chemical process. Background technique [0002] The chemical process is an important part of my country's process industry process, and the effectiveness of its control is of great significance to the subsequent process and the reduction of energy consumption in the whole process. As an important subject of industrial production, the improvement of the production process level of the process industry plays a vital role in the improvement of the economic benefits of the entire industry. For this reason, each main process parameter of the production process must be strictly controlled. With the market's higher quality requirements for petrochemical products and the development of production technology, the process has become more complex. Although the traditional control methods meet certain requirements, ...

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Problems solved by technology

With the market's higher quality requirements for petrochemical products and the development of production technology, the process has become more complex. Although traditional control methods meet certain requirements, it is difficult to further improve the control level

Simple process control can no longer meet the requirements of control accuracy and stability, the product qualification rate is low, and the device efficiency is low, forming the requirements for the development from conventional control to complex control, advanced control and other advanced stages

At present, the control in the actual industry basically adopts traditional simple control methods, and the control parameters are completely dependent on the experience of technicians, which increases the production cost and the control effect is not ideal.

my country's chemical process control and optimization technology is relatively backward, with high energy consumption, poor control performance, and low degree of automation. It is difficult to meet the needs of energy conservation, emission reduction, and indirect environmental protection. One of the direct influencing factors is the control of the system. program questions

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