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Event triggering PI control method of water tank liquid level control system

A liquid level control and event-triggered technology, applied in the field of automation technology and modern control, can solve the problems of waste of resources and design costs, and achieve the effect of ensuring production efficiency

Pending Publication Date: 2022-05-06
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this traditional trigger mechanism often leads to a waste of resources and an increase in design costs

Method used

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  • Event triggering PI control method of water tank liquid level control system
  • Event triggering PI control method of water tank liquid level control system
  • Event triggering PI control method of water tank liquid level control system

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Experimental program
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Embodiment Construction

[0109] The present invention will be further described below in conjunction with specific examples.

[0110] The invention provides an event-triggered PI control method of a water tank liquid level control system based on positive switching system modeling. The concrete steps of the inventive method comprise as follows:

[0111] Step 1. Establish the state space model of the positive switching system of the multi-capacity water tank liquid level control system;

[0112]

[0113]y(t)=C σ(t) x(t)

[0114] in, Indicates the amount of water in the tank at time t, Represents the operation of calculating the derivative of the vector x(t), is the water flow controllable by the valve, Indicates the amount of water flowing out of the water tank collected by the sensor at time t. The function σ(t) represents the switching law, and from the finite set Take the value. When σ(t)=p, the pth subsystem is activated, where, A p ,B p ,C p is the known system matrix of the ...

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Abstract

The invention discloses an event triggering PI control method of a water tank liquid level control system. The method comprises the following steps: firstly, establishing a state space model of the water tank liquid level control system by utilizing a positive switching system; a PI controller is designed by means of a multiple linear complementary positive Lyapunov function and a matrix decomposition technology, so that the system obtains reasonable liquid level control, and normal and smooth life and production of people are guaranteed. Based on an event triggering mechanism, an event triggering PI controller is designed, the system design cost is reduced, resource waste is avoided, and production benefits are guaranteed.

Description

technical field [0001] The invention belongs to the field of automation technology and modern control, and relates to a modeling of a multi-capacity water tank liquid level control system based on a positive switching system and an event-triggered PI control method. Background technique [0002] With the maturity of process control technology, in order to reduce the cost of production equipment, improve equipment safety, simplify production line process and improve production efficiency, people need to research and develop more advanced control strategies. Liquid level control is closely related to people's normal production and life. For example, if the water pressure of the water supply unit is too low, it will not meet the water supply standard, which will have a great impact on people's water use. The bubble water level control of the boiler, once the liquid level is too low, it will cause the temperature in the furnace to be too high and cause a safety accident. In add...

Claims

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Application Information

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IPC IPC(8): G05D9/12
CPCG05D9/12
Inventor 周晓月张俊锋孙振洋
Owner HANGZHOU DIANZI UNIV