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:
Jan. 26, 2021
Filed:
Jun. 11, 2018
Caterpillar Trimble Control Technologies Llc, Dayton, OH (US);
Mark Nicholas Howell, Christchurch, NZ;
Samuel Joseph Frei, Christchurch, NZ;
Caterpillar Trimble Control Technologies LLC, Dayton, OH (US);
Abstract
An excavator calibration framework comprises an excavator, a laser distance meter (LDM), and a laser reflector. The excavator comprises a chassis, linkage assembly (LA), sensor, implement, and an architecture controller. The LA comprises a boom, stick, and four-bar linkage (4BL) with the sensor on a 4BL dogbone linkage. The architecture controller is programmed to generate a mapping equation comprising linkage angle inputs (a measured dogbone angle θ, an estimated implement angle θ) and n unsolved 4BL linkage length and angle offset parameters. The controller is programmed to generate and solve a set of m mapping equations comprising the n unsolved parameters.