This presentation is intended only for the individual or entity to which it is addressed and may contain information that is the Confidential and/or Proprietary Information of Woodward Governor Company, the disclosure of which may be in violation of applicable law. If you are not the intended recipient, or an employee or agent responsible for delivery to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this message is strictly prohibited and you are requested to notify us immediately by telephone. Engine Systems Arduino Torque Recorder Woodward, INC January 2012 Clayton Rayment Engine Systems

Problem Currently, operator error from torque on assembly lines causes some products to ship with bolts that are not tightened, incorrectly tightened, or are missing alltogether. Although cases mentioned above are rare (once every 3 years) we need a solution to eliminate the problem. 2 Proprietary Information ●●●

Engine Systems Proposed Solution The Arduino Torque Recorder will combat this problem, and help ensure product quality for the customers by counting the level and number of torques and exporting them to a computer. 3 Proprietary Information ●●●

Engine Systems Current Torque Solution Currently Woodward uses Atlas Copco torque drivers. Some of these torque drivers have been in service for 15 years. New Atlas Copco torque drivers have torque counting built in, however the old drivers do not. 4 Proprietary Information ●●●

Engine Systems Development 5 Proprietary Information ●●● ATR Development Atlas Copco Status Station Set-up CostLow Cost Solution Station ID Serial Output

Engine Systems Atlas Copco Status Status programmable on with 3 relays Relays programmed to indicate “High” “Ok” “Low” torques Data taken into ATR with relay bounce control Data translated and packaged for export over serial Data exported to workstation computer via serial connection. 6 Proprietary Information ●●●

Engine Systems Station Setup Currently stations are not identified No way to match torques to stations ATR stores station data in EEPROM memory Station data is exported with the torque data Torque values in the database can be matched with a station. 7 Proprietary Information ●●●

Engine Systems Cost Currently there are 100 Atlas Copco torque units in use, each costing $16,000 New Atlas Copco torque drivers would cost $20,000 each To replace all units would cost approx. $2.0M not including time and labor Stations would be shut down for a long period of time The ATR is a low-cost solution costing approx. $50 per unit To upgrade all units would cost $5,000 not including time and labor Stations would not be shut down very long 8 Proprietary Information ●●●

Engine Systems Project Technical Challenges Problems: False Signals Relay bounce User Interface  User configuration Information Storage Solutions: Pull-up resistor enabled  Floats signal high  Signal indicated by grounding Delay added in the code to ensure relay is active Low-level terminal GUI added  User given options to configure station information Information about the workstation is stored in the onboard EEPROM 9 Proprietary Information ●●●

Engine Systems Arduino Torque Recording Solves multiple manufacturing line and quality control issues Data stored on a WISE database ATR can be configured to each workstation One ATR can monitor up to 3 Atlas Copco Machines Low cost solution – Delays $2.0M investment in new Atlas Copco torque drivers 10 Proprietary Information ●●●