Dividing wall type heat exchanger temperature self-adaptive tracking control system with fault tolerance function

Abstract

The invention discloses a dividing wall type heat exchanger temperature self-adaptive tracking control system with a fault tolerance function and relates to heat exchanger control systems. Through thedividing wall type heat exchanger temperature self-adaptive tracking control system, error precision can be set according to a designed temperature tracking error performance setting unit, and temperature tracking errors are effectively reduced. A designed universal actuator fault identification model can effectively estimate inevitable actuator jamming and failure faults in the dividing wall type heat exchanger temperature self-adaptive tracking control system, and eliminates the influence of the faults on the control precision, safety and stability of the dividing wall type heat exchanger temperature self-adaptive tracking control system. In combination with a designed self-adaptive controller and a parameter updating rule thereof, the dividing wall type heat exchanger outlet temperature self-adaptive tracking control system is high in tracking precision and good in fault tolerance, the working efficiency of a heat exchanger can be effectively improved, energy is saved, consumptionis reduced, continuous and stable operation of the dividing wall type heat exchanger temperature self-adaptive tracking control system can be guaranteed, and economic benefits and social benefits of enterprises are greatly improved.

Description

technical field [0001] The invention relates to a heat exchanger tracking control system, in particular to a partition wall heat exchanger temperature self-adaptive tracking control system with fault tolerance function. Background technique [0002] Heat exchangers are key basic equipment in chemical, petrochemical, food, pharmaceutical and other industries, and are containers for heat exchange between different fluid media. The partition wall heat exchanger controls the parameters such as the flow rate and temperature of the thermal fluid by controlling actuators such as valves, so as to achieve the purpose of controlling the temperature of the heated fluid. However, the heat exchanger is highly nonlinear and time-delayed, and the model is complex and difficult to obtain accurately. Moreover, the industrial environment in which it is located is generally harsh, and the influence of heat exchanger fouling makes it more difficult to control the temperature of the heat exchan...

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Problems solved by technology

In addition, long-term operation such as valve actuators may also cause failures and jams, which will not only affect the normal operation of the device, but will even cause incalculable losses to people's lives and property safety.

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