JPH0360018U

JPH0360018U -

Info

Publication number: JPH0360018U
Application number: JP11988189U
Authority: JP
Priority date: 1989-10-14
Filing date: 1989-10-14
Publication date: 1991-06-13

Description

[Brief explanation of drawings]

第１図〜第４図はこの考案の一実施例を示す図
、第５図は従来のアナログ・デジタル変換装置を
示す図である。図において、１……スコツト・トランス、２……
象限選択器、３……余弦乗算器、４……正弦乗算
器、５……引き算器、６……位相検波器、７……
電圧制御発振器、８……第１の可逆カウンタ、９
……第２の可逆カウンタ、１０……タイマーであ
る。なお各図中同一符号は同一または相当部分を
示す。 1 to 4 are diagrams showing an embodiment of this invention, and FIG. 5 is a diagram showing a conventional analog-to-digital converter. In the figure, 1...Scotto transformer, 2...
Quadrant selector, 3... Cosine multiplier, 4... Sine multiplier, 5... Subtractor, 6... Phase detector, 7...
Voltage controlled oscillator, 8...first reversible counter, 9
. . . second reversible counter, 10 . . . timer. Note that the same reference numerals in each figure 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 the two input terminals, and an output signal of the first reversible counter is inputted to the second input terminal, and the above a cosine multiplier that multiplies the cosine value of the first reversible counter by the signal at the first input terminal; a sine multiplier that inputs the output signal of the first reversible counter to and multiplies the signal at the first input terminal by the sine value of the first reversible counter; and outputs of the cosine multiplier and the sine multiplier. A subtracter that inputs a signal and outputs the difference between two signals, and a subtracter that inputs the output signal of the subtracter to the first input terminal of the two input terminals, inputs the carrier wave to the second input terminal, and inputs the carrier wave to the second input terminal. a phase detector that detects and rectifies the signal at the second input terminal using the signal at the second input terminal; The first reversible counter counts up or down by inputting the output signal of the phase detector to a first input terminal and inputting the clock signal of the voltage controlled oscillator to a second input terminal, and measures time. The output signal of the phase detector is input to the first input terminal of the three input terminals, the clock signal of the voltage controlled oscillator is input to the second input terminal, and the clock signal of the above-mentioned voltage controlled oscillator is input to the third input terminal. An analog counter characterized by comprising a second reversible counter that inputs a signal and counts up or down.
Digital 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 at the first input end of the two input ends. a cosine multiplier that inputs a sine wave signal of , inputs the output signal of a first reversible counter to a second input terminal, and multiplies the signal of the first input terminal by the cosine value of the first reversible counter; The cosine wave signal of the quadrant selector is input to the first input terminal of the two input terminals, the output signal of the first reversible counter is input to the second input terminal, and the sine wave signal of the first reversible counter is input to the first input terminal of the two input terminals. a sine multiplier that multiplies the signal at the first input terminal by a value; a subtracter that inputs the output signals of the cosine multiplier and the sine multiplier and outputs the difference between the two signals; a phase detector that inputs the output signal of the subtracter to one input terminal, inputs a carrier wave to a second input terminal, and detects and rectifies the signal at the first input terminal with the signal at the second input terminal; A voltage controlled oscillator which inputs the output signal of a phase detector and whose oscillation frequency changes depending on the input signal; the first reversible counter which inputs the clock signal of the voltage controlled oscillator and counts up or down, and a timer which measures time;
The output signal of the phase detector is input to the first input terminal of the two input terminals, the clock signal of the voltage controlled oscillator is input to the second input terminal, and the signal of the timer is input to the third input terminal. or a second reversible counter that counters a falling count. (3) Input a 3-phase synchro signal and convert it into a 2-phase resolver signal. Input the sine wave signal of the output resolver signal of the above Scott transformer to the first input terminal of the two input terminals. 2nd
a cosine multiplier that inputs the output signal of a first reversible counter to an input terminal thereof and multiplies the signal of the first input terminal by the cosine value of the first reversible counter; and a first input terminal of the two input terminals. The cosine wave signal of the output resolver signal of the Scott transformer is input to the second input terminal, the output signal of the first reversible counter is input to the second input terminal, and the sine value of the first reversible counter is input to the first input terminal. a sine multiplier that multiplies the signal at the end; a subtracter that inputs the output signals of the cosine multiplier and the sine multiplier and outputs the difference between the two signals; a phase detector which inputs the output signal of the subtracter, inputs a carrier wave to a second input terminal, detects and rectifies the signal at the first input terminal with the signal at the second input terminal, and the output signal of the phase detector. A voltage controlled oscillator whose oscillation frequency changes depending on the input signal, and a voltage controlled oscillator whose oscillation frequency changes depending on the input signal, and a voltage controlled oscillator whose output signal from the phase detector is inputted to the first input terminal of the two input terminals and the clock signal of the voltage controlled oscillator is inputted to the second input terminal. the first reversible counter that inputs and counts up or down;
A timer that measures time and the first of three input terminals.
The output signal of the phase detector is inputted to the input terminal of , the clock signal of the voltage controlled oscillator is inputted to the second input terminal, and the signal of the above-mentioned timer is inputted to the third input terminal. An analog-to-digital conversion device comprising: 2 reversible counters. (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, and a sine wave signal of the quadrant selector is input to the first input terminal of the two input terminals, and an output signal of the first reversible counter is input to the second input terminal. a cosine multiplier that inputs the cosine value of the reversible counter and multiplies the signal at the first input terminal, and a cosine multiplier that inputs the cosine wave signal of the quadrant selector to the first input terminal of the two input terminals, and At the input end of
A sine multiplier that inputs the output signal of the reversible counter and multiplies the signal at the first input terminal by the sine value of the first reversible counter, and inputs the output signals of the cosine multiplier and the sine multiplier. A subtracter outputs the difference between two signals, and the output signal of the subtracter is input to the first input terminal of the two input terminals, the carrier wave is input to the second input terminal, and the signal at the first input terminal is input. a phase detector that detects and rectifies the signal at the second input terminal; a voltage-controlled oscillator that receives the output signal of the phase detector and whose oscillation frequency changes depending on the input signal; and a first input terminal of the two input terminals. the first reversible counter which inputs the output signal of the phase detector to the second input terminal and inputs the clock signal of the voltage controlled oscillator to the second input terminal to count rising or falling; and a timer which measures time; The output signal of the phase detector is input to the first input terminal of the two input terminals, the clock signal of the voltage controlled oscillator is input to the second input terminal, and the signal of the timer is input to the third input terminal. or a second reversible counter that counts the decline.