气流式水平姿态传感器仿真的优化

Simulation optimization of airflow level posture sensor

利用FLUENT软件,采用功率替代温度的优化方法计算出气流式水平姿态传感器密闭腔体内的温度分布图,分别计算了传感器在不同倾角状态下和不同环境温度下密闭腔体内的温度场分布情况,计算和实验结果表明:气流式水平姿态传感器的两热敏电阻丝的温度差与倾角有很好的线性关系,它们之间的变化率为2.618 3 K/(o);环境温度对传感器的两热敏电阻丝的温度差的影响也是有线性关系的,倾角为24o时它们之间的变化率为–0.135 9K/K,与实验结果有很好的相似度。

Optimization method of power replacing temperature was used to calculate the temperature distribution of the airflow level posture sensor in closed cavity. The temperature distribution of sensor in closed cavity was calculated at different inclination sensor status and under different environmental temperatures. The calculation and experimental results show that the temperature difference between two thermal resistance wires of airflow level posture sensor has good linear relationship with inclination, and the change rate is 2.618 3 K/（~）. The effection of environmental temperature on the resistance difference about the sensors＇ two thermal resistance wires also has a linear relationship. When the inclination is 24~, the change rate is -0.135 9 K/K. It has a good similarity with the experimental results.