抄録
In this paper, the stability of the annular jet proximity sensor composed of an annular nozzle, a transmission line and a load volume is theoretically investigated. The sensor system is formulated by using the transfer function of simple waves in the line and the reflection coefficients at the sending point and receiving end. On the basis of this formulation and Nyquist's stability criteria, the stability condition of the sensor system is obtained, and then the stability limits are calculated by using various immittance function models of system compornents. By comparing these stability limits with ready-published experimental results, it becomes clear that the agreement between the theoretical result based on Brown's line model and the experimental result is the best. Therefore, the stability map based on Brown's line model is shown by the use of non-dimentional system parameters.
