The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 1987
Filed:
Jun. 11, 1986
Applicant:
Inventor:
Robert E Kasten, Moline, IL (US);
Assignee:
Deere & Company, Moline, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01B / ; G05B / ;
U.S. Cl.
CPC ...
364150 ; 364157 ; 364159 ; 364572 ; 172-9 ;
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.