The Study Of Temperature Compensation Method To Surface Acoustic Wave Accelerometer

Surface Acoustic Wave was discovered by the British physicist Rayleigh in 1880s. Along with SAW technology developmoment people began to utilize SAW (Surface Acoustic Wave) device to develop and research new sensor in 1980s. SAW accelerometer which is researched by many countries in recent years is a kind of high performance, low-cost sensor. As a kind of high sensitive inertial sensor, SAW accelerometer is worth being studied. It is significative not only in theory but also in engineering.Nowadays the main difficult problem of improving the SAW accelerometer precision is carrying on the temperature compensation to its temperature error. Although at present we have some compensation measures, their effect are not good. This article has analyzed the influences of ambient temperature on the existing bracket beam plate SAW accelerometer; the text has studied hardware compensation plan of the bracket beam plate SAW accelerometer and the exist questions. The text proposed the temperature compensation with the artificial neural networks to it the software compensation technology.The text carries on to the SAW accelerometer has moved the vertical analysis.1.The article has analyzed the dynamic and static response of the bracket beam plate SAW accelerometer signal.The text has studied the influences of ambient temperature on operating performance and the survey accuracy of the bracket beam plate SAW accelerometer.2. The text design the hardware compensation to the SAW accelerometer's temperature error, I suppressed the influnence caused by temperature disturbance factor with the SAW accelerometer's structure optimization design.3. The text studied suppressed the SAW accelerometer's temperature error's software compensating process, and has realized SAW accelerometer's modeling and the temperature compensation with the neural network. It changed the present situation that SAW accelerometer fundamental research only use the hardware to carry on the temperature compensation, and has developed the bracket beam plate SAW accelerometer temperature error's compensatory theory.4. Analysis the software compensation with MATLAB simulation software , I came to the conclustion of SAW accelerometer measuring accuracy was increased by artificial neural networks.