公开(公告)号：US3895221A

公开(公告)日：1975-07-15

申请号：US39863973

申请日：1973-09-19

Applicant: YOKOGAWA ELECTRIC WORKS LTD

Inventor： OHATA SHUICHI ,  TAKEUCHI YOJI ,  ISHIGURO TAKESHI ,  YAUCHI SHIRO

IPC: G01N27/00 ,  G06G7/24 ,  G06G7/75

CPC classification number: G06G7/75 ,  G06G7/24

Abstract: A measuring apparatus for two-variable function signal system such as is used to measure sulfur concentration in variable density petroleum, characterized by a linearizing circuit for linearizing the difference between a reference input signal and an input exponential function signal having two independent variables as its exponents; a circuit for subtracting from the output signal of the linearizing circuit a signal corresponding to the product of the reference value of the desired one of the independent variables and the difference between the reference value of the other independent variable and the other independent variable; and a division circuit with its dividend input being a signal corresponding to the output of the subtraction circuit, and its divisor input being a signal corresponding to the difference between the reference value of the other independent variable and the other independent variable.

Abstract translation: 用于测量可变密度石油中的硫浓度的双变量函数信号系统的测量装置，其特征在于线性化电路，用于将参考输入信号和具有两个独立变量的输入指数函数信号之间的差线性化为其指数 ; 用于从所述线性化电路的输出信号中减去与所述一个所述自变量的参考值与所述另一个独立变量的参考值与另一个独立变量之间的差的乘积相对应的信号的电路; 以及除法电路，其除数输入是对应于减法电路的输出的信号，其除数输入是对应于另一独立变量的参考值与另一独立变量之间的差的信号。