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 Title: |
US5534766:
Fuzzy logic power supply controller
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Bonissone, Piero P.; Schenectady, NY
Schutten, Michael J.; Schenectady, NY
Chiang, Kenneth H.-C.; Schenectady, NY
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| Assignee: |
General Electric Company, Schenectady, NY
other patents from GENERAL ELECTRIC COMPANY (218550) (approx. 30,796)
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| Published / Filed: |
1996-07-09
/ 1994-04-01
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| Application Number: |
US1994000221608
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| IPC Code: |
Advanced:
G05B 13/02;
G05F 1/10;
H02M 3/337;
Core:
H02M 3/24;
more...
IPC-7:
G05F 1/10;
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| ECLA Code: |
G05B13/02C2; G05F1/10; H02M3/337C;
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| U.S. Class: |
Current:
323/235;
323/283;
363/017;
363/098;
Original:
323/235;
323/283;
363/098;
363/017;
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| Field of Search: |
363/079,17,98
323/283,235
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| Priority Number: |
| 1994-04-01 |
US1994000221608 |
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| Abstract: |
The present invention discloses a method and system for controlling a power supply by delivering stable output voltage independent of load. The control system includes a sensor for sensing a state variable, a fuzzy logic controller for generating a control action, and an actuator for regulating the power supply in accordance with the control action. The fuzzy logic controller generates a fuzzy logic knowledge base using low-level fuzzy logic controllers and a mode selector in one embodiment and a fuzzy logic proportional integral controller in another embodiment. The generated fuzzy logic knowledge base is compiled in a look-up table and is used to quickly and efficiently control a power supply device such as a resonant converter.
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| Attorney, Agent or Firm: |
Goldman, David C. ;
Snyder, Marvin ;
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| Primary / Asst. Examiners: |
Wong, Peter S.; Riley, Shawn
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| Maintenance Status: |
E1 Expired Check current status
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| INPADOC Legal Status: |
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| Family: |
None
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First Claim:
Show all 22 claims |
We claim:
1. A fuzzy logic power supply controller for controlling a power supply in which a sensor means senses at least one state variable defined for the power supply and an actuator means provides a control action to the power supply, the controller comprising:
- means for generating a fuzzy logic knowledge base having a plurality of fuzzy rules defined for the at least one sensed state variable;
- a compiled look-up table of control action response values derived from executing the fuzzy rules in the fuzzy logic knowledge base for the at least one sensed state variable, wherein the compiled look-up table of control action response values obviates a need for subsequent execution of the fuzzy rules;
- means for producing addresses in the compiled look-up table for the at least one sensed state variable, wherein the addresses point to locations in the compiled look-up table where the control action response values are stored; and
- means for reading the compiled look-up table corresponding to the generated addresses and outputting the control action response values to the actuator.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 5 U.S. patent(s) that reference this one
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| Foreign References: |
None
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| Other Abstract Info: |
DERABS G96-333358
DERG96-333358
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| Other References: |
"Inherent Overload Protection for Series Resonant Converter" by RJ King, et al, IEEE Transactions on Aerospace and Electronic Systems, vol. AES-19, No. 6, pp. 820-830, Nov. 1983.
(11 pages)
Cited by 5 patents
"Resonant Power Processors: Part I-State Plane Analysis" by R. Oruganti, et al, Department of Electrical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, 1984 IEEE. pp. 860-867.
"Resonant Power Processors: Part II-Methods of Control" by R. Oruganti, et al, Department of Electrical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, pp. 868-878, 1984 IEEE.
"A Comparison of Half-Bridge Resonant Converter Topologies" by RL Steigerwald, IEEE, pp. 135-144, 1987.
"Fuzzy Sets" by LA Zadeh, Department of Electrical Engineering and Electronics Research Laboratory, University of California, Berkeley, California, pp. 29-44, 1964.
"Generalized Averaging Method for Power Conversion Circuits", by Seth Sanders, et al, IEEE, pp. 333-340. 1990 CH 2873-8/90/0000-0333.
"Fuzzy Sets for Man-Machine Interaction" by PJ Mac Vicar-Whelan, Int. J. Man-Machine Studies (1976), pp. 687-697.
"A Regulated DC-DC Voltage Source Converter Using a High Frequency Link" by VT Ranganathan, et al, IEEE Trans. on Industry Applications, vol. 1A-18, No. 3, pp. 279-287, May/Jun. 1982.
(9 pages)
Cited by 3 patents
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