Implement control system

Details Implement control system Implement control system

1987-04-10

1990-03-13

Jordan, Charles T.

Earth working

Automatic power control

Draft responsive

307359, A01B 63112

Patent

active

049076531

ABSTRACT:
A tractor implement draft force control system in which desired and actual implement draft force values are compared to provide a draft force error signal. The system is responsive to the error signal to control the working depth and hence the draft force of the implement. A deadband operates on the error signal to render error signals within the deadband ineffective to control the working depth of the implement and a deadband control means adjusts the width of the deadband so that the deadband width is maintained dependent on components of the error signal above a predetermined frequency. Thus the system can be arranged not to respond to high frequency spurious components of the draft force signal but is able to respond to the lower frequency components of this signal which are representative of the true draft force variations.

REFERENCES:
patent: 4064945 (1977-12-01), Haney
patent: 4194574 (1980-03-01), Benson et al.
patent: 4300638 (1981-11-01), Katayama et al.
patent: 4679633 (1987-07-01), Kauss
English Translation of KochendorFer et al., (3,342,006 Germany).
English Translation of Vlemmings et al., (3,017,567 Germany).

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