MOTORIZED TOOL STATUS SENSING METHOD AND APPARATUS

摘要

A system for evaluating a parameter of a tool being driven by a three-phase brushless motor includes a rotor angle position estimation subsystem having one or more sensing elements and an electronic angle processor. A control subsystem that controls the speed and/or the torque of the motor includes one or more sensing elements and an electronic control processor. An electronic status processor is configured to receive measurements from the rotor angle position estimation subsystem and the control subsystem and is further configured to generate estimates of a tool parameter status. In an example embodiment the tool is a high-speed drill and the system evaluates parameters such as drill tip location and speed/torque characteristics indicative of runout, transitions between layers in drilling, etc.