摘要
传统锯齿波电路采用模拟器件搭建,调整困难,线性度不高,对此,本文中介绍了一种采用数字电路产生近似锯齿波,再对近似锯齿波进行模拟滤波得到高线性度锯齿波的方法。在实现中,采用SUMT内点法和"成功-失败"法将约束最优化问题转化为无约束最优化问题的一种优化算法,对滤波部分的模拟电路设计进行了最优化,使得到的锯齿波的线性度大大提高。从而克服了传统模拟电路产生锯齿波,调整困难,线性度不高的缺点。
The traditional toothed wave generator recruit is composed of analog circuit, which is difficult to be regulated and the waveforrn is not linear strictly. This paper introduces a digital toothed wave generator, and then an optimized analog filter is used to make the toothed wave much more linear. The optimized analog filter uses SUMT interior point method, which could change the restricted optimizing problem to the unrestricted optimizing problem, to choose the most optional parameters, and then makes the toothed wave much more linear. Unlike the traditional analog wave generator, which is difficult to adjust the linearization, this digital toothed wave generator has high linearization and could be adjusted easily.
出处
《电子测量技术》
2008年第1期16-19,共4页
Electronic Measurement Technology
