振动传感器温度与横向灵敏度校准技术研究

    Research on Temperature and Transverse Sensitivity Calibration Techniques for High Precision Vibration Transducers

    • 摘要: 高精度振动传感器被广泛用于航空航天发动机振动监测、高低温地面环境试验、模态试验等测量领域,是保障被测设备工作可靠的重要技术手段之一。精确测量振动传感器在高低温环境下的灵敏度温度响应,以及传感器的横向灵敏度,不仅对研究传感器性能、提高传感器工艺质量具有着重要意义,而且也是保障型号产品研制生产过程中各类地面测试试验数据可靠的关键。通过开展高精度振动传感器关键性能校准技术研究,基于振动比较法、温度逐点快速测试技术、横向灵敏度精确测量技术,采用PXI总线架构组建一套振动传感器关键参数一体化快速校准装置,形成一套测量评价系统,通过LabVIEW平台编写了控制与校准软件,实现了一体化控制与测量,解决高精度振动传感器温度响应、横向灵敏度等关键参数快速校准测试的难题。通过对校准装置进行测量不确定度分析评估以及验证试验,结果显示该方法可解决传感器温度特性、横向灵敏度等型号测试试验的特殊需求,优化传感器结构设计,进一步保障高精度振动传感器在线工作的稳定。

       

      Abstract: High-precision vibration transducers, extensively employed in aerospace engine vibration monitoring, high and low temperature ground environmental testing, and modal testing, play a critical role in ensuring the reliability of tested equipment. Accurate measurement of these transducers' sensitivity to temperature variations and their transverse sensitivity is crucial for understanding transducer performance, enhancing manufacturing process quality, and guaranteeing the reliability of various ground testing data in product development and production. This paper presents research on key calibration techniques for high-precision vibration transducers, utilizing vibration comparison methods, point-by-point rapid temperature testing technology, and precise measurement of transverse sensitivity. An integrated rapid calibration device for key parameters of vibration transducers was developed using a PXI bus architecture, creating a comprehensive measurement IEWevaluation system. Control and calibration software were developed on the LabView platform to enable integrated control and measurement. This advancement addresses the challenges in rapidly calibrating critical parameters like temperature response and transverse sensitivity. Measurement uncertainty analysis and verification experiments of the calibration device demonstrate this method's ability to meet specific testing requirements for transducer temperature characteristics and transverse sensitivity, optimize transducer design, and ensure stability in high-precision vibration transducers' online operation.

       

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