JPH0312115U

JPH0312115U -

Info

Publication number: JPH0312115U
Application number: JP7275089U
Authority: JP
Priority date: 1989-06-21
Filing date: 1989-06-21
Publication date: 1991-02-07

Description

[Brief explanation of the drawing]

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は位相検波器、７は電圧制御発振
器、８は可逆カウンタ、９はカウンタ、１０はフ
リツププロツプ、１１は選択器である。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 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 a phase detector, 7 is a voltage controlled oscillator, 8 is a reversible counter, 9 is a counter, 10 is a flip-prop, and 11 is a selector. In each figure, the same reference numerals 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, an output signal of a reversible counter is inputted to the second input terminal, and the reversible counter A cosine multiplier that multiplies the signal at the first input terminal by the cosine value of , and a cosine wave signal of the resolver signal is input to the first input terminal of the two input terminals, and the output of the reversible counter is input to the second input terminal. A sine multiplier that inputs a signal and multiplies the signal at the first input terminal by the sine value of the reversible counter, inputs the output signals of the cosine multiplier and the sine multiplier, and outputs the difference between the two signals. The output signal of the subtracter is inputted to the first input terminal of the two input terminals, the carrier wave is inputted to the second input terminal, and the signal at the first input terminal is converted into the signal at the second input terminal. A phase detector that performs detection and rectification; 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 counter that receives the clock signal of the voltage-controlled oscillator and performs counting based on the clock signal. , a selector that switches and outputs the output signal of the voltage controlled oscillator according to the output signal of the counter; An analog-to-digital conversion device comprising: the reversible counter as described above which inputs the output signal of the selector and counts up or down. (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 reversible counter to a second input terminal, and multiplies the signal of the first input terminal by the cosine value of the reversible counter; Inputting the cosine wave signal of the quadrant selector into the first input terminal and inputting the output signal of the reversible counter into the second input terminal,
a sine multiplier that multiplies the sine value of the reversible counter by the signal at the first input terminal; a subtracter that inputs the output signals of the cosine multiplier and the sine multiplier and outputs the difference between the two signals; The output signal of the subtracter is inputted to the first input terminal of the two input terminals, the carrier wave is inputted to the second input terminal, and the signal of the first input terminal is inputted to the second input terminal.
a phase detector that detects and rectifies the signal at the input end of the
A voltage controlled oscillator that inputs the output signal of the phase detector and whose oscillation frequency changes depending on the input signal, a counter that inputs the clock signal of the voltage controlled oscillator and performs counting according to the clock signal, and A selector switches and outputs the output signal of the controlled oscillator, and the output signal of the phase detector is input to the first input terminal of the two input terminals, and the output signal of the selector is input to the second input terminal. or the above-mentioned reversible counter that counts the decline. (3) A Scott transformer that inputs a 3-phase synchro signal and converts it into a 2-phase resolver signal, and inputs the sine wave signal of the output resolver signal of the Scott transformer to the first input terminal of the two input terminals. 2nd
a cosine multiplier that inputs the output signal of the reversible counter to the input terminal of the reversible counter and multiplies the signal of the first input terminal by the cosine value of the reversible counter; a sine multiplier that inputs a cosine wave signal of the output resolver signal of the above, inputs the output signal of the reversible counter to a second input terminal, and multiplies the signal of the first input terminal by the sine value of the reversible counter; a cosine multiplier and a subtracter that inputs the output signals of the sine multiplier and outputs the difference between the two signals; a subtracter that inputs the output signal of the subtracter to a first input terminal of the two input terminals; A phase detector that inputs a carrier wave at one end and detects and rectifies the signal at the first input end with the signal at the second input end, and a voltage whose oscillation frequency changes depending on the input signal to which the output signal of the phase detector is input. a controlled oscillator; a counter that receives the clock signal of the voltage controlled oscillator and performs counting according to the clock signal; a selector that switches and outputs the output signal of the voltage controlled oscillator based on the output signal of the counter; An analog device characterized in that it is equipped with the reversible counter that inputs the output signal of the phase detector to one input terminal, inputs the output signal of the selector to the second input terminal, and counts up or down.・Digital conversion device. (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, the sine wave signal of the quadrant selector is input to the first input terminal of the two input terminals, and the output signal of the reversible counter is input to the second input terminal. , a cosine multiplier that multiplies the cosine value of the reversible counter by the signal at the first input terminal;
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 reversible counter is input to the second input terminal, and the sine value of the reversible counter is input to the first input terminal. a sine multiplier that multiplies the signal; a subtracter that inputs the output signals of the cosine multiplier and the sine multiplier and outputs the difference between the two signals;
The output signal of the subtracter is inputted to the first input terminal of the two input terminals, the carrier wave is inputted to the second input terminal, and the carrier wave is inputted to the second input terminal.
a phase detector that detects and rectifies the signal at the input end of the input terminal using 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 the voltage controlled oscillator. a counter that inputs a clock signal and performs counting according to the clock signal; a selector that switches and outputs the output signal of the voltage controlled oscillator based on the output signal of the counter; 1. An analog-to-digital converter comprising: the reversible counter which inputs the output signal of the selector and inputs the output signal of the selector to a second input terminal and counts up or down.