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Cold and hot water tank water level balancing method based on incremental PID control algorithm

A technology of control algorithm and water level balance, which is applied in non-electric variable control, control/regulation system, and simultaneous control of multiple variables, etc., can solve the problem that the water level of cold and hot water tanks cannot be kept in balance, and achieve avoidance of liquid level oscillation and safety Good, precise control

Inactive Publication Date: 2022-01-07
陕西省计量科学研究院
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for balancing the water level of the cold and hot water tanks based on the incremental PID control algorithm, so as to solve the problem that the water levels of the cold and hot water tanks cannot be kept in balance in the prior art

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  • Cold and hot water tank water level balancing method based on incremental PID control algorithm
  • Cold and hot water tank water level balancing method based on incremental PID control algorithm
  • Cold and hot water tank water level balancing method based on incremental PID control algorithm

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Embodiment 1

[0069] The water level balance method of the hot and cold water tanks based on the incremental PID control algorithm of the present embodiment is specifically:

[0070] After starting to run the cold and heat shock cycle test device, in the first half of the operation cycle, the computer continuously samples 11 data of the liquid level of the constant temperature cold water tank through the acquisition control module and sensors, and then samples the 11 data in order from large to small Sequential sorting, using computer to perform median filtering and smoothing filtering on the sorted data to obtain the liquid level value L of the constant temperature cold water tank in this cold and hot cycle cold(i) ;

[0071] Then judge L cold(i) Is it at the highest liquid level L of the constant temperature cold water tank cold-max Minimum liquid level L with constant temperature cold water tank cold-min Between, L cold-max The value is 0.7 meters, L cold-min The value is 0.35m, if ...

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Abstract

The invention relates to the technical field of liquid flow metering, in particular to a cold and hot water tank water level balancing method based on an incremental PID control algorithm. The liquid levels of a cold water tank and a hot water tank are collected through a high-precision liquid level meter, the liquid level difference of the two water tanks is compared by performing median and amplitude limiting filtering on the collected liquid level data, the opening and closing time between the water outlet valve and the water return valve of the cold water pipeline and the hot water pipeline is calculated and controlled through the PID algorithm, cold water or hot water can fully return to the corresponding water tank, water level balance of the cold water tank and the hot water tank is achieved, and the advantages of energy conservation, consumption reduction, accurate control, high automation degree, good safety, convenient operation and the like are achieved. The temperature fluctuation of the two water tanks is smaller, and liquid level oscillation is avoided.

Description

technical field [0001] The invention relates to the technical field of liquid flow measurement, in particular to a water level balancing method for cold and hot water tanks based on an incremental PID control algorithm. Background technique [0002] According to Basquin's principle of metal fracture caused by fatigue, the fatigue of liquid flow meters will also lead to the increase of indication error with the continuation of use time until failure occurs. Through the exchange of mechanical energy and thermal energy, the impact test method that replaces the number of load changes with the actual running time, as the standard measurement of the flow sensor, realizes the long-term reliability test of the flow meter. In the durability and life test of liquid flow meters, the method of liquid cold and heat shock cycle test is often used to analyze the long-term reliability and service life of the meter. [0003] In the actual cold and hot cycle impact durability test, the test ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D27/02
CPCG05D27/02
Inventor 李锋周秉直李勍张俊亮韩婉婷李振周彬
Owner 陕西省计量科学研究院
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