基于HHO算法的铠装热电偶动态补偿方法研究

Research on the dynamic compensation method of armored thermocouple based on HHO algorithm

由于铠装热电偶的时间常数较长、动态特性差,在动态测试中会产生动态误差,往往不能满足实际测量需求。提出一种基于哈里斯鹰优化算法(Harris hawk optimization,HHO)的动态补偿模型设计方法,使用该补偿模型,改善了铠装热电偶的动态特性。采用基于高温检定炉的实验系统得到铠装热电偶的动态标定实验数据,同时使用HHO算法优化选取动态补偿模型的参数,完成动态补偿模型设计。实验表明:通过此试验系统及方法可将铠装热电偶的时间常数从37.33 s减小到1.91 s。在某些特定工作环境下,可使用此方法改善热电偶传感器的动态特性,延长其使用寿命,降低成本。

Due to the long time constants and poor dynamic characteristics of armored thermocouples, dynamic errors occur in dynamic tests, which often do not meet the actual measurement requirements. A dynamic compensation model design method based on Harris hawk optimization algorithm(HHO) is proposed, and using this compensation model, the dynamic characteristics of the armored thermocouple are improved. The dynamic calibration experimental data of the armored thermocouple is obtained by using the experimental system based on the high-temperature calibration furnace, and the parameters of the dynamic compensation model are optimally selected using the HHO to complete the model design. The experiments show that the time constant of armored thermocouple can be reduced from 37.33 s to 1.91 s by this test system and method, which can be used to improve the dynamic characteristics of thermocouple sensor, extend its service life and reduce the cost in some specific working environment.