基于步进电机的微震动模拟算法研究

Research on Micro Vibration Simulation System Based on Stepper Motor

为定量模拟微弱震动以辅助实验研究、提高算法效果。采用步进电机,实现对微弱震动量的模拟复现,并要求系统响应迅速准确。在固定单轴长度的条件下,需要对微震动过程中的时变速度和加速度分量曲线进行精确模拟,并要求达到模拟过程平稳且无失步和过冲现象。在对微弱震动模拟研究的过程中,提出了两个优化方案,其一是对步进电机的传统7段S型曲线进行改进,指定各阶段时间,去掉匀加速过程,从而勾勒出各种加减速曲线,提高电机的动态特性;二是离散化目标曲线后,采用宽度可调节的滑动窗口法实现每阶段的加减速。实验结果表明,系统在定量复现微弱震动的同时,响应快速,性能稳定。

In this paper,in the process of research on weak vibration simulation,two optimization schemes are proposed.One is to improve the traditional 7-segment S-shaped curve of the stepper motor.Specify the time of each stage and remove the uniform acceleration process to outline the various Acceleration and deceleration curve to improve the dynamic characteristics of the motor.Second,after discretizing the target curve,the sliding window method with adjustable width is used to achieve acceleration and deceleration in each stage.The experimental results show that while the system reproduces the weak vibration quantitatively,the response is fast and the performance is stable.