基于智能算法的双平板导热系数测试仪

A double-guarded hot plate thermal conduction coefficient measuring instrument based on intelligent algorithms

依据无限大平板导热理论的傅立叶导热定律设计了平板式导热系数测试仪。为提高导热系数的精度及测试效率,加热电炉采用基于改进遗传算法的PID控制器。利用改进的遗传算法进行仿真寻优确定PID的参数Kp、Ki、Kd。由于采用智能控制算法,缩短了测试周期,提高导热仪的测试效率。由于选择虚拟仪器平台,提高了测量处理的智能化程度。经试验证明,应用此测试仪可较大提高导热系数的测试精度与效率。

According to the Fourier thermal conductivity theory for infinite plate,the authors design a infinite plate thermal conductivity coefficient measuring instrument. In order to improve the precision and efficiency of testing thermal conductivity,PID controller based on improved genetic algorithm is used on resistance furnace. Simulation optimization to determine Kp,Ki,Kdby genetic algorithm. The test cycle will be shorten and the thermal efficiency of the testing instrument will be improved. As the choice of virtual instrument platform,the measurement of dealing intelligence will be improved. The results of the tests showed that the accuracy and efficiency of tests for high- temperature thermal conductivity can be improved.