摘要
回弹系数是评价泡沫材料的一个关键参数。通常,研发人员使用光电方法实现落球回弹仪回弹量的自动测量,但由于传感器输出小球下落信号的复杂性,该仪器的相关指标很难使用通用计数器进行测量。本文首先应用数学方法对落球回弹的物理过程进行分析,然后对其原理方程进行化简,接着对文献中提及的两种回弹仪实现方式进行比较后,研制了一种落球回弹仪。最后,本文还提出了一种落球回弹仪校准方法,并将该方法应用在落球回弹仪的计量校准中。
The percentage rebound valuer is a key parameter for evaluating the resilience of flexible cellular polymeric materials.Usually,researchers use photoelectric detection method to construct the ball rebound tester and measure the rebound value automatically.But the accuracy of ball rebound tester is hard to measure by universal counter for the complexity of the output waveform of the sensor.This paper analyzed the physics model by mathematical method,simplified the theoretical equation,compared two kinds of approaches mentioned in literature,developed a ball rebound tester,proposed and realized a calibration method for the tester in the end.Nowadays,the tester is distributed and the calibration method has been used in calibrating the ball rebound testers designed with the photoelectric detecting technique.
作者
关婕
苗芳
GUAN Jie;MIAO Fang(Liaoning Institute of Measurement,Shenyang 110004,China)
