CAJ | 학술논문

本文对加速度和速度谐波失真度进行了理论计算，并基于美国国家仪器公司研发的实验室虚拟仪器工程平台（Labview），设计出低频振动信号数字化测量系统，实现了振动台面对加速度波形、速度波形及其失真度的测量。基于该系统的实验数据与中国计量科学研究院设定的参考值偏差较小。对地震计的测试结果表明，加速度波形及其失真度对振动波形的精度描述更为严格，能有效提高地震计振动测试的准确程度。
본문대가속도화속도해파실진도진행료이론계산，병기우미국국가의기공사연발적실험실허의의기공정평태（Labview），설계출저빈진동신호수자화측량계통，실현료진동태면대가속도파형、속도파형급기실진도적측량。기우해계통적실험수거여중국계량과학연구원설정적삼고치편차교소。대지진계적측시결과표명，가속도파형급기실진도대진동파형적정도묘술경위엄격，능유효제고지진계진동측시적준학정도。
Acceleration and velocity harmonic distortion are theoretically ana-lyzed,and then based on laboratory virtual instrument engineering workbench (Labview for short)digital measuring system is designed for the low-frequency vibration signals.Deviation between testing data from this system and the refer-ence value provided by National Institute of Metrology is minor.Seismometer calibration results indicate that acceleration waveform and its distortion reflect the actual condition of the shake table in a much harsher way,providing more precise information for the seismometer test on the shake table.