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PROCESS FOR DESIGNING A VIRTUAL SENSOR, CORRESPONDING VIRTUAL SENSOR, SYSTEM, AND COMPUTER-PROGRAM PRODUCTS
PROCESS FOR DESIGNING A VIRTUAL SENSOR, CORRESPONDING VIRTUAL SENSOR, SYSTEM, AND COMPUTER-PROGRAM PRODUCTS
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机译:设计虚拟传感器,相应的虚拟传感器,系统和计算机程序产品的过程
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摘要
Described herein is a process for designing a virtual sensor that is able to estimate a variable of interest v as a function of a set of available variables ui. The process comprises the steps of: - acquiring (1002) a design data-set Dd comprising a number N of measured values v(ti) of the variable of interest v and corresponding measured values ũi(ti) of the available variables ui; - determining a limit δ on the disturbances of the available variables ui and a limit η on the errors of the method of measurement of the variable of interest v; - selecting (1004) a Lipschitz function f* with a respective Lipschitz constant γ, which is able to estimate the variable of interest v(t) as a function of a number n of past values of each available variable ui, by executing the following steps one or more times for different numbers n: a) determining a value for the Lipschitz constant y; b) defining (1006) a maximum limit f(r(t)) and a minimum limit f(r(t)) for the estimate of the variable of interest v as a function of the design data-set Dd, and moreover the number n, the value for the Lipschitz constant y, the limit δ on the disturbances of the available variables ui, and the limit η on the errors of the method of measurement of the variable of interest v, and choosing a Lipschitz function f* comprised between the maximum limit f(r(t)) and the minimum limit f(r(t)); c) determining (1008) an estimation error ε*(f*) for the Lipschitz function f* and selecting the Lipschitz function f*, associated to which is a respective Lipschitz constant y* and a respective number n*, that presents the minimum estimation error ε*( f*(y*, n*)); and - implementing (1012) the selected Lipschitz function f* in an electronic circuit.
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机译:本文描述了一种用于设计虚拟传感器的过程,该虚拟传感器能够根据一组可用变量 u I> 来估计感兴趣变量 v I> i I> Sub> 。 I>该过程包括以下步骤:-获取(1002)设计数据集 D I> d < / I> Sub>,包括感兴趣变量 v I>的测量值v(ti)的数量 N I>和相应的测量值ũi I> ( ti I>)的可用变量 u I> i I> Sub>; -确定可用变量 u I> i I> Sub>的扰动的极限δ和变量测量方法的误差的极限η感兴趣的 v I>; -选择(1004)具有各自的Lipschitz常数γ的Lipschitz函数 f I> *,该函数能够估计感兴趣变量 v(t) I>作为数的函数通过对不同的变量执行一次或多次以下步骤,每个可用变量 u I> i I> Sub>的过去值的 n I>数字 n I>:a)确定Lipschitz常数 y I>的值; b)定义(1006)最大限制 f(r(t)) I>和最小限制 f I> U> (r(t) ) I>用于根据设计数据集 D I> d I> < / Sub>,还有数字 n I>,Lipschitz常数 y I>的值,可用变量 u I>的扰动极限δ i I> Sub>,以及关注变量 v I>的测量方法误差的极限η I>,以及选择介于最大限制 f(r(t)) I>和最小限制 f I> U>之间的Lipschitz函数 f I> * > (r(t)) I>; c)确定(1008)Lipschitz函数 f * I>的估计误差ε*(f *) I>并选择Lipschitz函数 f * I>,与之相关联的是各自的Lipschitz常数 y * I>和各自的数字 n * I>,从而呈现出最小的估计误差ε* I>( f * I>( y I> *, n I> *)); -在电子电路中实现(1012)选定的Lipschitz函数 f * I>。
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