DIGITAL AGC CONTROL METHOD AND FEEDBACK CONTROL DEVICE

Title:

DIGITAL AGC CONTROL METHOD AND FEEDBACK CONTROL DEVICE

Document Type and Number:

WIPO Patent Application WO/2014/125753

Kind Code:

A1

Abstract:

Provided are a digital AGC control method and a feedback control device whereby appropriate feedback control is possible in response to reference input values of a variety of sizes. The digital AGC control method comprises: a first step of a digital AGC unit (11) outputting a setting value according to a reference input value (X); a second step of a PI control unit (12) deriving an operation degree of a control subject (16), using the setting value; a third step of a DAC (13) generating an output signal (Y) which denotes the operation degree; a fourth step of a gain adjustment unit (14) and an ADC (15) deriving a measurement value (M) of the control subject; and a fifth step of inputting the measurement value (M) into the digital AGC unit (11). The first step stores the reference input value (X) in a first register, stores the measurement value (M) which is inputted in the fifth step in a second register, derives a deviation between the reference input value (X) and the measurement value (M) and stores same in a third register, detects a zero value bit number which is contiguous excluding a sign bit from upper bits in the first register, left-shifts the third register according to this bit number, and generates a deviation setting value as the setting value.

Inventors:

MUNAKATA ICHIROU (JP)
SHOJI HIDEKI (JP)

Application Number:

PCT/JP2013/085333

Publication Date:

August 21, 2014

Filing Date:

December 26, 2013

Export Citation:

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Assignee:

TOYO SYSTEM CO LTD (JP)

International Classes:

H03M1/66

Foreign References:

JPH04298668A	1992-10-22
JPH0496477A	1992-03-27
JPH07282380A	1995-10-27
JPS6454822A	1989-03-02
JPH1164194A	1999-03-05

Other References: