Electronic circuit and method for simulating mechanical quadratu

Details Electronic circuit and method for simulating mechanical quadratu Electronic circuit and method for simulating mechanical quadratu

1997-11-25

1999-07-20

Young, Brian

Coded data generation or conversion

Phase or time of phase change

Synchro or resolver signal

341110, H03M 100

Patent

active

059261226

ABSTRACT:
An electronic encoder circuit and method for providing a set of quadrature waveforms whose frequency is related to the amplitude of an analog input signal. Broadly stated, the electronic encoder circuit comprises conversion circuitry that generates a digital signal from an analog signal that, in a typical application, will be representative of the speed or frequency of a master machine, process or assembly line. The conversion circuitry is connected to a microcontroller that processes the digital signal and produces a potentially modified digital signal as an output. The output digital signal from the microcontroller is received by additional conversion circuitry that generates an encoded analog signal whose frequency is related to the original input analog signal. Phase shifting circuitry generates quadrature waveforms through operation on the encoded analog signal. The quadrature waveforms can then be used to drive or control a slave device.

REFERENCES:
patent: 4737728 (1988-04-01), Nakamura et al.
Parallax, Inc.; "Basic Stamp General Information"; Internet Data Sheet; WWW site last revised Sep. 10, 1997; 1 page.
Linear Technology, Inc.; "Micropower Sampling 12-Bit A/D Converters In S0-8 Packages"; Internet Data Sheet; Copyright 1996-1997; 1 page.
Maxim, Inc.; "+5V, Low-Power, Voltage-Output, Serial 12-Bit DACs"; Internet Data Sheet; Feb., 1997; 16 pages.
Analog Devices, Inc.; "Voltage-to-Frequency and Frequency-to-Voltage Converter"; Internet Data Sheet; Copyright 1995-1997; 6 pages.

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