Patent ID: 6131061
Filing Date: 2000-10-10
Classification: E02F

Abstract:
An apparatus for controllably preventing the underdigging of a work machine by an implement connected to the work machine, comprising:a memory;an underdigging boundary, the underdigging boundary being represented by data values stored in the memory and the underdigging boundary being located in a predetermined pattern relative to at least a portion of the work machine, the work machine setting on a surface having a grade and the predetermined pattern of the underdigging boundary being a half plane having a top periphery common with the grade and being angularly disposed from the periphery with respect to the grade;at least one position sensor associated with the implement, the position sensor being adapted to produce a sensed position of the implement signal; anda controller in communication with the memory, adapted to receive the sensed position of the implement signal and being adapted to develop a modified desired position signal in response to a comparison between the sensed position of the implement signal and the underdigging boundary.