Automatic gain adjustment device and automatic gain...

Details Automatic gain adjustment device and automatic gain... Automatic gain adjustment device and automatic gain...

2008-01-22

2008-01-22

Knight, Anthony (Department: 2121)

Data processing: generic control systems or specific application

Generic control system, apparatus or process

Optimization or adaptive control

C327S147000, C327S156000, C375S373000

Reexamination Certificate

active

07321801

ABSTRACT:
An automatic gain adjustment device and method capable of accurately adjusting a gain with a simple structure. In an automatic gain adjustment method of a feedback control system that uses a phase difference between an output signal obtained from a controlled object and an input signal while controlling the object based on the input signal, a phase shift amount is set to cause a frequency of the input signal to coincide with the crossover frequency at which the open loop gain forming the feedback control system becomes 0 dB, and a phase of the input signal is shifted based on the phase shift amount.

REFERENCES:
patent: 5072192 (1991-12-01), Noguera et al.
patent: 5331299 (1994-07-01), Smith
patent: 5448203 (1995-09-01), Matui et al.
patent: 5602896 (1997-02-01), Diepstraten
patent: 6072654 (2000-06-01), Eddy
patent: 6144261 (2000-11-01), Goto et al.
patent: 6204988 (2001-03-01), Codilian et al.
patent: 2002/0176333 (2002-11-01), Meng-Fu
patent: 11024705 (1999-01-01), None
patent: 2000315326 (2000-11-01), None
“Phase Shifter: A Nonlinear Circuit for Direct Measurement of Phase Margin in Feedback Control Systems”; Dantowitz, P. et al., Circuits and Systems, proceedings of the 35thMidwest Symposium on Circuits and Systems, (1992), IEEE, vol. 1, pp. 365-368.
David M Harrison, Michael J Howes, Roger D Pollard: “The Evaluation of Phase Noise in Low Noise Oscillators”, Microwave Symposium Digest, MTT-S International, vol. 87, No. 1, Jun. 187 (1987-Jun.), pp. 521-524, XP002434237, Las Vegas, Nevada, USA.

Affiliated with

Also associated with

Rating

Automatic gain adjustment device and automatic gain... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic gain adjustment device and automatic gain..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic gain adjustment device and automatic gain... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2763108