US 12,257,782 B2
Apparatus, system and method of process monitoring and control in an additive manufacturing environment
William MacNeish, St. Petersburg, FL (US); and Erik Gjovik, St. Petersburg, FL (US)
Assigned to JABIL INC.
Filed by JABIL INC., St. Petersburg, FL (US)
Filed on Aug. 4, 2021, as Appl. No. 17/393,563.
Application 17/393,563 is a continuation of application No. 15/723,874, filed on Oct. 3, 2017, granted, now 11,485,088.
Prior Publication US 2022/0072797 A1, Mar. 10, 2022
Int. Cl. B29C 64/393 (2017.01); B29C 64/118 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 50/02 (2015.01)
CPC B29C 64/393 (2017.08) [B29C 64/118 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12)] 17 Claims
OG exemplary drawing
 
1. A method of controlling an additive manufacturing print process on an additive manufacturing printer that extrudes a print filament through a print nozzle, comprising:
monitoring a plurality of sensors as indicative of a current state of the additive manufacturing print process, wherein the plurality of sensors sense a first extrusion force applied to the print filament and sense a second reactive force of the print filament against a print head of the additive manufacturing printer;
receiving, at at least one controller comprising a proportional integral derivative (PID) controller, sensor data regarding the monitoring from the plurality of sensors;
calculating a comparative difference between the current state and a correct state of the print process by comparing the sensor data to a database of stored correct states of the print process via the PID controller;
assessing a crimping, abnormal operation, or inefficient operation of the current state of print process when compared to the correct state; and
modifying at least one output from the at least one controller to revise a characteristic of input of the print filament or temperature of the nozzle to correct the crimping, abnormal operation, or inefficient operation without halting of the print process.