Brian K Gilmore

US Patent:

7769512, Aug 3, 2010

Filed:

Feb 12, 2007

Appl. No.:

11/673644

Inventors:

William Robert Norris - Rock Hill SC, US
Bernard Edwin Romig - Illinois City IL, US
John Franklin Reid - Moline IL, US
Brian Joseph Gilmore - Geneseo IL, US

Assignee:

Deere & Company - Moline IL

International Classification:

B62D 6/00

US Classification:

701 44, 701 41

Abstract:

A vehicle steering control method including the steps of obtaining a heading error, obtaining a velocity value, obtaining a distance error, applying the heading error, inputting a measure of operator aggressiveness and defuzzifying an output from a steering rule base. The velocity value and the distance error are applied along with the heading error to fuzzy logic membership functions to produce an output that is applied to a steering rule base. A measure of the operator aggressiveness is input to the steering rule base. An output from the steering rule base is defuzzified to produce a steering signal.

US Patent:

7895135, Feb 22, 2011

Filed:

Feb 12, 2007

Appl. No.:

11/673638

Inventors:

William Robert Norris - Rock Hill SC, US
John Franklin Reid - Moline IL, US
Brian Joseph Gilmore - Geneseo IL, US

Assignee:

Deere & Company - Moline IL

International Classification:

G06G 7/00

US Classification:

706 3, 706 52, 701 44, 701 98

Abstract:

A human perception model for a speed control method obtains a steering angle, a velocity error and a distance error. The steering angle and a measure of operator aggressiveness are applied to the model. The output is defuzzified. The steering angle, the velocity error and the distance error are applied to fuzzy logic membership functions to produce an output that is applied to a velocity rule base. The measure of operator aggressiveness is input to the velocity rule base. The output from the velocity rule base is defuzzified to produce a speed signal.