Research on humidity control method for environmental experiment

The temperature and humidity control system of a climate environment laboratory has contradictions when conducting humidity-heat alternating experiments because the temperature and humidity are correlated. To solve this problem, a fuzzy feedforward decoupling method was proposed to simplify the humidity and heat test system for intervening the cooling turning point in advance. The temperature and humidity of the test room were optimized based on the equipment process. The simulation and test show that the control method is reasonable and applicable, the temperature tolerance is controlled within ±0.5 oC, and the relative humidity tolerance is controlled within ±0.5%. A stable and automatic adjustment of humidity in the humidity-heat experiment is realized, and the precision of humidity control is improved. Compared with GJB150A, the relative humidity of ±5% has been greatly improved.