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2. 发明申请

WO2005071503A1 CONTROL DEVICE OPTIMIZING COMPUTING INPUT SAMPLE OF DATA WITH DISCRETE FOURIER TRANSFORM ALGORITHM 审中-公开
标题翻译：控制设备优化计算输入样本数据与离散傅立叶变换算法
公开(公告)号：WO2005071503A1
公开(公告)日：2005-08-04
申请号：PCT/FI2005/000046
申请日：2005-01-21
申请人： ABB OY , LÖNN, Markus
发明人： LÖNN, Markus
IPC分类号： G05B13/02
CPC分类号： G06F17/141
摘要： An automatic control device (1) that comprises input means (21, 24) for inputting measured values (7) of cyclic voltage and/or current; computing means (21) for computing a parameter based on said values of voltage and/or current, and for comparing the computed parameter against a predefined condition; and initiating means (21, 23) for initiating a control function in response to the parameter meeting the predefined condition. The input means (21, 24) of the control device are arranged to input a predefined number of samples per one cycle; and said computing means (21) are arranged to compute the parameter with a discrete Fourier transform algorithm optimized based on fixed coefficients related to said predefined number of samples per cycle. The control device and the corresponding control method provide a significantly faster response time than the earlier general programmed solutions without increasing the related costs as much as the conventional digital signal processors.
摘要翻译：一种自动控制装置（1），包括用于输入循环电压和/或电流的测量值（7）的输入装置（21,24）计算装置（21），用于基于所述电压和/或电流值来计算参数，并用于将所计算的参数与预定条件进行比较; 以及启动装置（21,23），用于响应于满足预定条件的参数来启动控制功能。控制装置的输入装置（21,24）被布置成每一个周期输入预定数量的样本; 并且所述计算装置（21）被布置为使用基于与每个周期的所述预定数量的采样相关的固定系数优化的离散傅里叶变换算法来计算参数。控制装置和相应的控制方法提供比早期通用编程解决方案更快的响应时间，而不会增加与常规数字信号处理器一样多的相关成本。

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