【摘要】 本文根据数控转塔刀架的特点，给出了由ＩＢＭＰＣ／ＡＴ及相应驱动电路组成的数控转塔刀架性能测试系统。由于微机的实时时钟的时间基准过于粗糙，文中提出了加快计算机实时时钟的时间基准频率的方法，以满足使用要求。更多还原

【Abstract】 A testing and analysis were made on the frequency features of a prototype harmonic gear reducerand spectral were acquired in different working conditions. The results showed that when its frequency ofexcition is near or similar to the inherent torsional oscillation, the whole system are brought out resonance.An analysis is made on the relationship and changingfeatures among the sections of its frequencies that inpropotion to speed of the reducer.更多还原