JPH03101419U

JPH03101419U -

Info

Publication number: JPH03101419U
Application number: JP937690U
Authority: JP
Priority date: 1990-02-01
Filing date: 1990-02-01
Publication date: 1991-10-23

Description

[Brief explanation of drawings]

第１図〜第４図はこの考案の実施例を示す図、
第５図は従来のアナログ・デイジタル変換装置を
示す図である。図において、１はスコツト・トランス、２は象
限選択器、３は余弦乗算器、４は正弦乗算器、５
は引き算器、６はアナログ・デイジタル変換器、
７は乗算器、８は加算器、９は第１のレジスタ、
１０は符号判定器、１１は第２のレジスタ、１２
は比較器、１３は選択器、１４は位相検波器、１
５は電圧制御発振器、１６は可逆カウンタである
。なお、図中同一符号は同一または相当部分を示
す。 Figures 1 to 4 are diagrams showing embodiments of this invention;
FIG. 5 is a diagram showing a conventional analog-to-digital converter. In the figure, 1 is a Scott transformer, 2 is a quadrant selector, 3 is a cosine multiplier, 4 is a sine multiplier, and 5 is a sine multiplier.
is a subtracter, 6 is an analog-to-digital converter,
7 is a multiplier, 8 is an adder, 9 is a first register,
10 is a sign determiner, 11 is a second register, 12
is a comparator, 13 is a selector, 14 is a phase detector, 1
5 is a voltage controlled oscillator, and 16 is a reversible counter. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims

[Claims for Utility Model Registration] (1) A sine wave signal of a resolver signal is inputted to the first input terminal of two input terminals, and a register signal of the first register is inputted to the second input terminal to generate a digital signal. a cosine multiplier that multiplies a sine wave signal by the value of the cosine of the angle; a cosine multiplier that inputs the cosine wave signal of the resolver signal to the first input terminal of the two input terminals, and a first register to the second input terminal; a sine multiplier which inputs the register signal of and multiplies the cosine wave signal by the value of the sine of the angle of the digital signal; a subtracter that inputs the output of a sine multiplier and subtracts two signals; an analog-to-digital converter that inputs the output of the subtracter to its input terminal and converts it into a digital signal; and a reference signal input to its input terminal. a sign determiner for determining the sign of the signal; a first input terminal receives the output of the analog-to-digital converter; a second input terminal inputs the output of the sign determiner; the two signals are multiplied; a multiplier that inputs the output of the multiplier to a first input terminal, inputs the digital signal of the first register to a second input terminal, and an adder that inputs the digital signal of the first register to a second input terminal; Enter the second
a first register that inputs the output of the adder to the input terminal of the register and temporarily holds the signal given to the second input terminal with the signal given to the first input terminal;
a second register that inputs the output signal of the register and stores the input signal; and a comparator that inputs the output signal of the first register and the output signal of the second register and compares the two signals. , a selector that receives the output signal of the first register and the output signal of the second register and switches between the two input signals using the output signal of the comparator. conversion device. (2) A quadrant selector that inputs the sine wave and cosine wave signals of the resolver signal and outputs the quadrant-selected sine wave and cosine wave signals, and the quadrant selector is connected to the first input terminal of the two input terminals. A cosine multiplier that inputs a sine wave signal of the digital signal, inputs the register signal of the first register to the second input terminal, and multiplies the sine wave signal by the value of the cosine of the angle of the digital signal; 1st
The cosine wave signal of the quadrant selector is input to the input terminal of the quadrant selector, the register signal of the first register is input to the second input terminal, and the cosine wave signal is multiplied by the sine value of the angle of the digital signal. a subtracter that inputs the output of the cosine multiplier to a first input terminal and inputs the output of the sine multiplier to a second input terminal to subtract two signals; an analog-to-digital converter that inputs the output of the converter and converts it into a digital signal; a sign determiner that inputs a reference signal to an input terminal and determines its sign; and a first input terminal of the analog-to-digital converter. a multiplier that inputs the output, inputs the output of the sign determiner to a second input terminal, and multiplies the two signals;
The output of the multiplier is input to the input terminal of the adder, the digital signal of the first register is input to the second input terminal of the adder, and the digital signal of the first register is input to the input terminal of the adder. a first register that inputs the output of the adder to its input terminal and temporarily holds the signal given to the second input terminal with the signal given to the first input terminal; and the output signal of the first register. a second register that inputs the input signal and stores the input signal; a comparator that inputs the output signal of the first register and the output signal of the second register and compares the two signals; An analog-to-digital conversion device comprising: a selector that receives an output signal of the register and an output signal of the second register, and switches between the two input signals using the output signal of the comparator. (3) A Scotto transformer that inputs a three-phase synchro signal and converts it into a two-phase resolver signal, and a sine wave signal of the resolver signal output from the Scotto transformer to the first input terminal of the two input terminals. a cosine multiplier that inputs the register signal of the first register to the second input terminal and multiplies the sine wave signal by the value of the cosine of the angle of the digital signal; Input the cosine wave signal of the resolver signal output from the above Scotto transformer, input the register signal of the first register to the second input terminal, and multiply the cosine wave signal by the sine value of the angle of the digital signal. a sine multiplier, a subtracter that inputs the output of the cosine multiplier to a first input terminal, inputs the output of the sine multiplier to a second input terminal, and subtracts two signals; an analog-to-digital converter that inputs the output of the subtracter and converts it into a digital signal; a sign determiner that inputs a reference signal to an input terminal and determines the sign thereof; and a first input terminal that receives the analog-to-digital converter. input the output of the device,
inputting the output of the sign determiner to a second input terminal;
a multiplier that multiplies two signals, an adder that inputs the output of the multiplier to a first input terminal, inputs the digital signal of the first register to a second input terminal, and adds the signals; A first input terminal which inputs a clock to the input terminal of , inputs the output of the adder to the second input terminal, and temporarily holds the signal applied to the second input terminal with the signal applied to the first input terminal. a second register that inputs the output signal of the first register and stores the input signal; and a second register that inputs the output signal of the first register and the output signal of the second register and stores the two signals. A comparator that compares the output signal of the first register and the output signal of the second register is input, and the output signal of the comparator is used to compare the
An analog-to-digital conversion device characterized by comprising a selector that switches and outputs two input signals. (4) A SCOTT transformer that inputs a 3-phase synchro signal and outputs a 2-phase resolver signal, and a sine wave whose quadrant is selected by inputting the sine wave and cosine wave signals of the resolver signal output from the SCOTT transformer. and a quadrant selector that outputs a cosine wave signal, a sine wave signal of the quadrant selector is input to the first input terminal of the two input terminals, and a register signal of the first register is input to the second input terminal. a cosine multiplier that multiplies the sine wave signal by the value of the cosine of the input digital signal; A sine multiplier that inputs the register signal of the first register at one end and multiplies the cosine wave signal by the sine value of the angle of the digital signal; an analog-to-digital converter that inputs the output of the subtracter to its input terminal and converts it into a digital signal; a sign determiner that inputs a reference signal to one end and determines its sign; a first input end receives the output of the analog-to-digital converter; and a second input end receives the output of the sign determiner. , a multiplier that multiplies two signals; an adder that inputs the output of the multiplier to a first input terminal, inputs the digital signal of the first register to a second input terminal, and adds the signals;
A clock is input to the first input terminal, the output of the adder is input to the second input terminal, and the signal given to the second input terminal is temporarily held with the signal given to the first input terminal. a first register, and a second register that receives the output signal of the first register and stores the input signal.
a comparator that inputs the output signal of the first register and the output signal of the second register and compares the two signals; An analog-to-digital converter comprising: a selector that inputs an output signal and switches and outputs two input signals using the output signal of the comparator.