基于温湿度模型的促动器防积水机理与实验

摘要

In order to improve the reliability of the actuator used outdoors, waterproof countermeasures of actuator are studied.According to the actuator's structure and heat transfer theory,a temperature and humidity model for gas inside the actuator is established to achieve an online calculation of temperature and humidity of gas inside the actuator.By the comparison of the simulation value and experimental measurement of temperature and humidity,the temperature and humidity model is verified and the production reason of accumulated water inside the actuator is analyzed.According to the calculation results of the temperature and humidity model,the solution of installing waterproof ventilated valve to solve the problem of accumulated water inside the actuator is proposed,and experimental comparison is conducted.%为提高促动器在户外使用的可靠性，需要研究促动器防积水策略。根据促动器的结构和传热学原理，建立促动器内气体的温湿度模型，实现了促动器内气体温湿度的在线计算。通过模拟计算值与实验测量值的对比，对温湿度模型进行验证，并分析了促动器内部积水的原因。根据温湿度模型计算结果，提出了用防水透气阀解决促动器内部积水问题的方案，并进行了实验对比。