壓電射流角速度傳感器的軟件補(bǔ)償技術(shù)

介紹了壓電射流角速度傳感器的軟件補(bǔ)償技術(shù)，給出了壓電射流角速度傳感器的溫度補(bǔ)償和線性補(bǔ)償?shù)脑砗统绦?。通過(guò)合理選擇單片機(jī)，利用數(shù)據(jù)插值和查表相結(jié)合的方法，實(shí)現(xiàn)了傳感器的溫度補(bǔ)償和線性補(bǔ)償，實(shí)驗(yàn)結(jié)果表明，經(jīng)過(guò)軟件補(bǔ)償后傳感器的非線性度從2%減低到0.5%，工作溫度范圍從0～45℃拓寬到－40～+55℃。此種補(bǔ)償方法，簡(jiǎn)單易行，對(duì)于其他類型的傳感器，只要其重復(fù)精度足夠高，該技術(shù)具有普遍意義。
關(guān)鍵詞:壓電射流角速度傳感器；熱電阻絲；溫度補(bǔ)償；線性補(bǔ)償
Abstract: The compensation technology for the piezoelectric fluidic angular sensors is discussed, including the principle and program of temperature compensation and linearity compensation. The temperature compensation and linearity compensation of sensor have been realized by means of adopting proper microprocessors, interpolation and table-searching. The numerical results show that the nonlinearity decreases from 2% to 0.5% and the range of operation temperature increases from 0 ~ 45℃ to –40 ~+55℃ when the sensors compensated. The compensation technology is easy to apply and also available for the sensors of other kinds once the repeatable accuracy is high enough.
Key words: piezoelectric fluidic angular rate sensors；hot wire; temperature compensation；linearity compensation