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Thermocouple dynamic characteristics compensation based on improved equilibrium optimizer algorithm.

Qianfang Xie1, Zhijie Zhang1, Yanfeng Li2

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This summary is machine-generated.

This study introduces an improved Equilibrium Optimizer algorithm to enhance thermocouple dynamic response for accurate high-temperature measurements. The method significantly boosts speed and bandwidth, enabling precise readings in extreme conditions.

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Area of Science:

  • Thermocouple technology
  • Metrology
  • Optimization algorithms

Background:

  • Thermocouples struggle with accuracy in transient high-temperature measurements due to slow dynamic response.
  • Existing methods often fail to adequately compensate for these dynamic limitations.

Purpose of the Study:

  • To develop a novel compensation method for thermocouple dynamic characteristics.
  • To improve the accuracy of high-temperature measurements using an enhanced optimization algorithm.

Main Methods:

  • An Improved Equilibrium Optimizer (EO) algorithm was developed, incorporating good point set-based population initialization and dynamic weighting factors.
  • The enhanced EO algorithm was applied to compensate for thermocouple dynamic characteristics.
  • Experimental validation was performed on a high-temperature furnace platform.

Main Results:

  • The thermocouple time constant was reduced by 92%, from 21.31 to 1.72 s.
  • The cutoff frequency increased 13.1 times, from 0.982 to 12.87 Hz, expanding the operating bandwidth.
  • Superior dynamic characteristics were achieved for short-exposed junction thermocouples after compensation.

Conclusions:

  • The proposed Improved Equilibrium Optimizer method effectively compensates for thermocouple dynamic characteristics.
  • Accurate temperature measurement in extreme environments is enabled using short-exposed thermocouples.
  • The enhanced dynamic performance allows for reliable transient high-temperature measurements.