步进电机变频加速度升降速控制方法的研究

步进电机升降控制是数控机床加工过程稳定的关键，本文在分析步进电机特性的基础上，提出了变频加速度升降速的控制方法，并给出了相关的公式。该法具有升降速稳定快速的优点，是一种理想的升降速控制方法。

对XK714B伺服驱动步进电机升降速控制方法的探讨

步进电机升降速控制是数控机床加工过程稳定的关键,本文在分析XK714B伺服驱动步进电机特性的基础上,探讨了变频加速度升降速的控制方法,并给出了相关的公式。

Analysis of penetration acceleration signal based on wavelet transformation

In order to analyze the composition and frequency distribution of acceleration signal in the process of projectile penetrating,this paper uses wavelet transform to decompose penetration acceleration signal to get the distribution of penetration acceleration signal in different frequency bands.Compared with the ideal acceleration signal curve and its characteristics,it can be concluded that the frequency range of the acceleration signal in the axis of the projectile and the vibration frequency range of the projectile are 31.25-62.5kHz and 62.5-125 kHz,respectively.Finally,the penetration acceleration signal curve is obtained by Simulink.