Method and system for continuous motion digital probe routing

Details Method and system for continuous motion digital probe routing Method and system for continuous motion digital probe routing

1998-05-28

2000-04-18

Grant, William

Data processing: generic control systems or specific application

Specific application, apparatus or process

Product assembly or manufacturing

700161, 700163, G06F 1900

Patent

active

060526289

ABSTRACT:
A method and system for routing a digital probe which signals either a triggered or non-triggered state to continuously scan a part surface without having to return to a rest position each time the probe is triggered. The probe is carried by manufacturing equipment capable of moving in response to control signals and providing manufacturing equipment feedback signals indicating the current position of the probe. Continuous movement of the digital probe is achieved by testing the probe to determine if it is triggered or not at a series of closely spaced time intervals, and rotating a move vector (corresponding to desired probe velocity) in each computation cycle to alter the probe trajectory as a function of the operating state of the probe and its position during the previous computation cycle. These techniques allow relatively inexpensive digital probing systems to gather data at speeds comparable to those of much more expensive analog systems. Various computation algorithms for altering the move vector are possible, including increasing or decreasing one component of the move vector by a constant value depending on whether the probe is triggered or not. Another algorithm generates a spiral path around the position of the probe at the previous transition between the triggered and untriggered operating state.

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