Electric lawn mower with intelligent control

Details Electric lawn mower with intelligent control Electric lawn mower with intelligent control

1995-03-29

1996-04-02

Melius, Terry Lee

Harvesters

Motorized harvester

Having fluid-pressure or stored-energy motor

56 111, 56 102G, A01D 3468

Patent

active

055029574

ABSTRACT:
There is disclosed an electric mower, preferably of the riding type, in which microcontrollers are interposed between quadrature controllers and motors operating each of the drive wheels. The microcontrollers are programmed to provide pulse width modulated current drive control and braking. Other functions are controlled electronically to assure operations that are not harmful to the operator, the motors, the battery or the lawn being mowed.

REFERENCES:
patent: D311742 (1990-10-01), Splittstoesser
patent: 3732671 (1973-05-01), Allen et al.
patent: 3841069 (1974-10-01), Weck
patent: 5406778 (1995-04-01), Lamb et al.
Kuo (Ed.) "Step Motors and Control Systems" in Incremental motion control, V2., Champaign, Ill., SRL Publishing Co, 1979, pp. 236-239.
Catalog, "BEI", Industrial Encoder Div. Motion Systems Co, BEI Electronics, Inc. Goleta, CA 93117, Optical Encoder Design Guide, rev Oct. 1984, pp. 1, 6-7.
Catalog, Hewlett Packard, "28mm Diameter Two Channel Incremental Encoder Kit", HEDS-5000 Series, Jan. 1981, pp. 1-2.
Catalog, "Dixon.RTM. Riding Mowers" , Dixon Industries, Inc. Coffeyville, KS 67337, 1994, 14 pages.

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