Self-tuning regulator implement control

Details Self-tuning regulator implement control Self-tuning regulator implement control

1986-06-11

1987-06-30

Lall, Parshotam S.

Boots, shoes, and leggings

364157, 364159, 364572, 172 9, A01B 63112, G05B 1304

Patent

active

046775420

ABSTRACT:
A hitch control system generates a rockshaft valve control signal as a function of sensed draft force, rockshaft position and operator input. Periodically, an auxiliary or disturbance signal of certain amplitude, frequency and duration is superimposed on the valve command signal. A calculated soil/implement gain is derived from components of the valve command signal and the measured draft force which have certain phase relationships with the disturbance signal. An electronic gain is modified so that the overall soil/implement gain remains substantially constant.

REFERENCES:
patent: 3109970 (1963-11-01), Smyth
patent: 3287615 (1966-11-01), Smyth
patent: 4006346 (1977-02-01), Pemberton
patent: 4071821 (1978-01-01), Harthill et al.
patent: 4214300 (1980-07-01), Barlow et al.
patent: 4495977 (1985-01-01), Strunk et al.
patent: 4518044 (1985-05-01), Wiegardt et al.
"System-Identification of Self-Adaptive Control" by W. D. T. Davies, Wiley-Interscience, 1970, London, pp. 35-43.

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