Abstract:

Aimed at the difficulties of error elimination of horizontal direction dynamic accuracy measurement to press, a trigger measurement was proposed based on composite principle of displacement sensor and photoelectric sensor. The measurement as well as the existed defects of soft-triggerand hard-trigger were discussed, and an improved soft-trigger measurement was proposed. The feasibility of this measurement was validated by experiments, and the announcements in experiments were illustrated.Regarding to the larger noise of initial displacement signals in trigger measurement, two methods of noise reduction were provided using the filtering and themultiple-point averaging, and the results were compared.

Key words: press, dynamic accuracy, trigger measurement;noise-reduction method

摘要：

针对压力机水平方向动态精度测量的难点，提出了一种基于位移传感器与光电传感器复合原理的压力机动态精度触发测量方法;对软触发和硬触发的测量方法及存在的缺陷进行了分析，提出了一种改进后的软触发测量方法;通过试验对所述测量方法的可行性进行了验证，对试验中的注意事项进行了说明;针对触发采集的初始位移信号噪声较大的问题，给出了滤波和多点平均两种降噪方法，并对两种处理方法的分析结果进行了比较。

关键词: 压力机, 动态精度, 触发测量, 降噪方法