Operator assist algorithm for an earth moving machine

摘要

A system and method are provided for assisting a machine operator in controlling a work tool of the machine. In an embodiment, the work tool is set at a first height and the machine is travelling at a first machine speed, resulting in a first work tool or machine load. Based on these factors, a first work tool control mode or second work tool control mode is chosen. In the first work tool control mode, the work tool is manually controlled within a load limit and a work tool height limit, whereas in the second work tool control mode, the work tool load is controlled toward the first work tool load. Based on operator inputs and machine state, as well as other factors such as ground surface, the machine may switch between control modes, or out of automatic work tool control entirely.

主权项

1. A method of assisting a machine operator in controlling a work tool of the machine the method comprising:
a controller configured to execute computer-executable instructions read from a non-transient computer-readable medium, the controller configured to perform the steps of the method including; determining that automatic tool control is desired; determining a target machine operating state; detecting an active operator commanded work tool motion; detecting a last operator commanded work tool position; detecting that the machine is operating at a first machine operating state; and based on the detected active operator commanded tool motion and first machine operating state, selecting a work tool control mode, from a first work tool control mode and a second work tool control mode, wherein in the first work tool control mode, manual control of the work tool is maintained except that the work tool is automatically moved to adjust the machine state when an undesirable machine state is detected, and wherein in the second work tool control mode, the work tool position is adjusted to control the machine operating state toward the target machine operating state.