Calculation and Analysis of Capacitive Sensor Plate Coupling Angular Displacement of Parallel Beam
Jian Wang · Chuangan jishu xuebao · 2013
In order to solve nonlinear problems of the output capacitor value and the input load for which plate coupling angular displacement causes in parallel beam capacitive sensor,calculating and analyzing is made in this paper to the statically indeterminate structure of parallel beam elastomer in terms of the force method,and gets the main structural parameters correlating to the angle between the upper and lower plate.The coupling angle has been calculated by internal forces,and the conclusions have been confirmed in the finite element simulation.This conclusion can provide the theoretical approach for optimizing coupling angular displacement by means of designing the structure parameters of the parallel beam,meanwhile based on Non-parallel plate capacitor formula,a more accurate analytical model of load and capacitance has been constructed,which can provide the basis for fitting of the sensor input-output characteristic curve.