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

A heat exchanger temperature, adaptive tracking technology, applied in the direction of temperature control, temperature control by electric means, control/regulation system, etc., can solve the loss of people's life and property safety, affect the normal operation of the device, and the failure of valve actuators and other problems, to reduce the accident rate, improve production efficiency and economic benefits, and achieve the effect of stable performance

Inactive Publication Date: 2021-03-26
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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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.

Method used

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

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Embodiment 1

[0021] Such as figure 1 As shown, the heat exchanger temperature adaptive tracking control system is composed of an error performance setting unit, an adaptive controller, an actuator, a heat exchanger and a temperature detection unit.

[0022] Specific steps:

[0023] (1) Design the temperature error performance index according to the actual process conditions, so that the accuracy range can reach within 1%;

[0024] (2) Design a general actuator fault identification model, including two situations of stuck and failure;

[0025] (3) Adaptive controller is designed by backstepping method;

[0026] (4) After completing the above steps, the operation process of the system is as follows: firstly, set the pre-reached target temperature value of the outlet of the heat exchanger, and then feedback the actual outlet temperature of the current heat exchanger detected in real time to form a closed-loop loop to obtain the target temperature and The tracking error value of the actual ...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F27/00G05D23/19
CPCF28F27/00G05D23/1919
Inventor 杨忠君宗学军连莲何戡邢海娜
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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