JPS6448614U

JPS6448614U -

Info

Publication number: JPS6448614U
Application number: JP14421387U
Authority: JP
Priority date: 1987-09-21
Filing date: 1987-09-21
Publication date: 1989-03-27

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示す図、第２図
は従来のＲ／Ｄ変換装置を示す図である。図において、２はアナログ・デイジタル変換器
、３は象限選択回路、４は余弦乗算器、５は正弦
乗算器、６は引き算器、７は乗算器、８は加算器
、９はレジスタ、１１は符号判定器、１２は位相
検波器、１３は電圧制御発信器、１４は可逆カウ
ンタである。なお、各図中同一符号は同一又は相
当部分を示す。 FIG. 1 is a diagram showing an embodiment of this invention, and FIG. 2 is a diagram showing a conventional R/D conversion device. In the figure, 2 is an analog-to-digital converter, 3 is a quadrant selection circuit, 4 is a cosine multiplier, 5 is a sine multiplier, 6 is a subtracter, 7 is a multiplier, 8 is an adder, 9 is a register, and 11 is a 12 is a phase detector, 13 is a voltage controlled oscillator, and 14 is a reversible counter. Note that the same reference numerals in each figure indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

a first analog-to-digital converter which inputs one sine wave signal of the two-phase resolver signal at the input end and converts it into a digital signal; and a cosine wave signal of one of the two-phase resolver signals at the input end. Enter
a second analog-to-digital converter for converting into a digital signal and having two inputs;
The output signal of the first analog-to-digital converter is input to the input terminal of the converter, and the output signal of the first analog-to-digital converter is input to the input terminal of
A quadrant selection circuit inputs the output signal of an analog-to-digital converter and outputs two signals according to the angular quadrant; A cosine multiplier that multiplies, a sine multiplier that receives two signals and multiplies them by the sine values of the first and second input signals, and a subtractor that receives two signals and subtracts the two signals. , a multiplier that inputs two signals and multiplies the two signals, an adder that inputs two signals and adds the two signals, and a first input signal that inputs the two signals, In a resolver/digital conversion device configured with a register that temporarily holds a second input signal and a sign determiner that determines the sign of the input signal, one of the two output signals of the quadrant selection circuit is connected to the first input terminal. Input the sine wave of
a cosine multiplier that inputs the signal of the register at a second input terminal and multiplies the signal at the first input terminal by the value of the cosine of the angle at the second input terminal; and the quadrant selection terminal at the first input terminal. Input the cosine wave of one of the two output signals of the circuit, input the signal of the register to the second input terminal, and multiply the signal of the first input terminal by the value of the sine of the angle at the second input terminal. a sine multiplier that inputs the output signal of the cosine multiplier to the first input terminal of the two input terminals, inputs the output signal of the sine multiplier to the second input terminal, and subtracts the two signals. a subtracter that inputs a reference signal to an input terminal and determines its sign; a multiplier that inputs the output signal of the sign determiner and multiplies the two signals; and inputs the output signal of the register to a first input terminal of the two input terminals;
inputting the output signal of the multiplier to a second input terminal;
an adder that adds two signals; a clock signal is input to a first input terminal of the two input terminals; an output signal of the adder is input to a second input terminal; 1. A resolver digital conversion device comprising: a register for temporarily holding a signal applied to a second input terminal with a given signal.