西安交通大学84-3压电式传感器xi'anjiaotonguniversityFType9001A...9071AType9081B,9091BFig. 4:MountingwithType9422A...(IncludedAccessories)Theload washersarealways installed underpretension:BothcompressionandtensileforcescanbemeasuredBending moments and transverse forces are taken upbut not measuredMicrogaps are closed,a high stiffness and therefore a wide frequency rangeHighest level of linearity and stability of themeasurement signal航天航空学
The load washers are always installed under pretension： • Both compression and tensile forces can be measured • Bending moments and transverse forces are taken up but not measured • Microgaps are closed, a high stiffness and therefore a wide frequency range • Highest level of linearity and stability of the measurement signal §4-3 压电式传感器
西安交通大学84-3压电式传感器xi'an jiao tong universityApplications· Forces in assembly technology·Forces in spot welding· Forces in presses·Force variations in bolted connections underhigh static pretension·Shockandfatigueresistance·Cutting and forming forces·Forces in railroad brakes·Impact forces30航天航空学院
30 Applications • Forces in assembly technology • Forces in spot welding • Forces in presses • Force variations in bolted connections under high static pretension • Shock and fatigue resistance • Cutting and forming forces • Forces in railroad brakes • Impact forces §4-3 压电式传感器
西安交通大学84-3压电式传感器xi'anjiaotonguniversityapprox.30%of itsforcerangeThepretensioningforceisbestmeasureddirectlywiththeloadwasher.The sensitivity value is shown in the calibration certificate.Usethe valueofthenon-pretensionedsensor工S航天航空学陵
• approx. 30 % of its force range. • The pretensioning force is best measured directly with the load washer. • The sensitivity value is shown in the calibration certificate. Use the value of the non-pretensioned sensor §4-3 压电式传感器
西安交通大学84-3压电式传感器xi'an jiao tong university>压电式加速度传感器三角柱预压簧片晶体片晶体片质量块预紧环1出线口出线口底座三角剪切型中心压缩型航天航空学院
晶体片 质量块 晶体片 预紧环 出线口 底座 出线口 三角剪切型 中心压缩型 三角柱 预压簧片 §4-3 压电式传感器 压电式加速度传感器
西安交通大学S4-3压电式传感器xi'an jiao tong university加速度传感器测量非转动部件的绝对振动的加速度。适应高频振动和瞬态振动电荷放大器的测量。传感器质量小，可测很高接收形式：惯性式振级。变换形式：压电效应典型频率范围：0.2Hz~10kHz现场测量要注意电磁场、线性范围和灵敏度随各种不同型号声场和接地回路的干扰可在很大范围内变化航天航空学院
接收形式：惯性式 变换形式：压电效应 典型频率范围：0.2Hz~10kHz 线性范围和灵敏度随各种不同型号 可在很大范围内变化。 n 测量非转动部件的绝对振 动的加速度。 n 适应高频振动和瞬态振动 的测量。 n 传感器质量小，可测很高 振级。 n 现场测量要注意电磁场、 声场和接地回路的干扰。 §4-3 压电式传感器