脉宽调制系统的拓广块脉冲函数分析

Analysis of Pulse-width Modulation System via a Developed Block-pulse Functions

首先给出基于块脉冲函数（ＢｌｏｃｋＰｕｌｓｅＦｕｎｃｔｉｏｎｓ）而构造的被称为拓广块脉冲函数（ＤｅｖｅｌｏｐｅｄＢｌｏｃｋ—ＰｕｌｓｅＦｕｎｃｔｉｏｎｓ）的一类任意分段恒定的不相关正交函数簇及其有关的基本特性．应用拓广块脉冲函数，得到一个适于脉宽调制系统分析的快速递推算法，该算法仅合代数运算，简洁明了，并且具有误差不向下传递的优良特性，便于编程和应用。文中的两个算例验证了该方法的有效性．

At first, a set of orthogonal functions, which called as Developed Blockpulse Functions, is defined and then some useful properties of this set functions are derived. Using these propcties, a general algorithm which involves onlyalgebraic computation is introduced to analyze the PWM system.