【摘要】 清华大学电液伺服控制土工离心机振动台系统最近研制成功,并已应用于土工结构物动力反应模型试验。该文首先简要介绍了振动台数据采集系统的性能要求和组成,然后详述了数据采集系统静动力性能测试的过程。测试结果表明,数据采集系统采样频率高、受电磁干扰小、在1 g和N g离心加速度条件下均能实时采集与传送数据,满足试验要求。更多还原

【Abstract】 A centrifuge shaking table has recently been established in Tsinghua University and applied to analyze seismic soil-structure interaction.Performance requirements and configuration of the data acquisition system for the shaking table were introduced in this paper.The performance test procedures were described in details by using varieties of transducers under static and dynamic conditions.Test results indicated that acquisition system had high sampling rate,acceptable accuracy and was seldom affected by electronic interference.It was also able to obtain,transmit and treat analog signal in time under 1g or Ng centrifugal acceleration,providing experimental support for its feasibility.更多还原