结冰传感器数学模型的建立和验证  

Establishment and analysis of mathematic model for ice sensor

作　　者：王华[1] 聂丽梅[2] 赵萍[2] 

机构地区：[1]南京工业大学机械与动力工程学院,江苏南京210009 [2]中国电子科技集团公司第四十九研究所,黑龙江哈尔滨150001

出　　处：《传感器与微系统》2008年第12期63-66,共4页Transducer and Microsystem Technologies

摘　　要：为了实现复杂环境中结冰的自动探测,研制了一种振管式结冰传感器。基于振动理论建立了振管的波动方程,采用变量分离法求得波动方程的通解,再结合传感器探头实际结构的简化模型和具体的定解条件求得波动方程的定解,采用量级计算法对定解进行简化,最终建立振管式结冰传感器的数学模型,并获得前三阶轴向振型。对传感器样品进行了性能测试,计算结果与实验结果比较表明:数学模型有效,可用于振管式结冰传感器的结构设计。A vibrating-tube ice sensor is developed to detect the ice in the complex situation automatically. In order to find out the vibrating characteristic of the tube, the wave equation is established based on the vibration theory, the general solution is obtained using the variable separation method, then, the fixed solution is obtained by integrating the simple structure model of the sensor and the detailed terms and conditions. After the fixed solution is simplified based on the magnitude computational algorithm, the mathematic model of the vibrating-tube ice sensor is established and three-order mode of axial vibrating are obtained. The sample test is carried out and the comparison between the results of test and calculation indicate that the mathematic model is valid and can be used in the structure design of the sensor.

关 键 词：结冰传感器 振管 数学模型 波动方程 变量分离法 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]