[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

Lygouras, 1999 - Google Patents

Memory reduction in look-up tables for fast symmetric function generators

Lygouras, 1999

Document ID
1471781901878315712
Author
Lygouras J
Publication year
Publication venue
IEEE Transactions on Instrumentation and Measurement

External Links

Snippet

This paper describes a new hardware technique, providing high-resolution trigonometric functions sine and cosine reading for an angle/spl theta/from a significantly reduced size lookup table (LUT). The method takes advantage of the symmetries of these trigonometric …
Continue reading at ieeexplore.ieee.org (other versions)

Classifications

    • H—ELECTRICITY
    • H03—BASIC ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/22—Pattern-reading type
    • H03M1/24—Pattern-reading type using relatively movable reader and disc or strip
    • H03M1/28—Pattern-reading type using relatively movable reader and disc or strip with non-weighted coding
    • H03M1/30—Pattern-reading type using relatively movable reader and disc or strip with non-weighted coding incremental
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/245—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
    • G01D5/2451—Incremental encoders
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06F—ELECTRICAL DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G06F7/4806—Computations with complex numbers
    • G06F7/4818—Computations with complex numbers using coordinate rotation digital computer [CORDIC]

Similar Documents

Publication Publication Date Title
KR0169550B1 (en) Absolute position detection apparatus and error compensation method therefor
EP1979704B1 (en) Encoder signal analysis system for high-resolution position measurement
CN105978570B (en) High-precision signal processing system of sine and cosine encoder
US4358723A (en) Method and apparatus for measuring the rotation of a work table
EP0787973B1 (en) Method and apparatus for processing angular data from encoder
US4486845A (en) Resolver to incremental shaft encoder converter
JP3220411B2 (en) Interpolation circuit of encoder
EP0724137A1 (en) Interpolation device
US5506579A (en) Absolute encoder using multiphase analog signals
Lygouras Memory reduction in look-up tables for fast symmetric function generators
Lygouras et al. High-performance position detection and velocity adaptive measurement for closed-loop position control
EP1058390B1 (en) R/D converter
Wu et al. A subdivision method for improving resolution of analog encoders
JPH10132605A (en) Position detector
Lukić et al. A compact and cost-effective linearization circuit used for angular position sensors
JP2004108774A (en) Position detection method for optical encoder
EP0257100B1 (en) Pulse distribution type position detector
JP3345559B2 (en) High division encoder device
JP2019070644A (en) Modulated wave resolver device
JPH0529045B2 (en)
SU1035617A1 (en) Reversible coordinate converter
Kavanagh Probabilistic learning technique for improved performance of servosystems with incremental encoder feedback
JP3047946B2 (en) Angular position signal generator for sine and cosine signals
Lygouras et al. Implementation of Specific Robotic Functions Directly in Hardware
SU714356A1 (en) Circular interpolator