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NAPV Upgrades

NAPV Upgrades. Airport Pavement Working Group. Ryan Rutter. April 25, 2012. NAPTV Upgrades:. Installation of hydraulic oil heaters Installation of redundant fiber optic communications cable and supporting festoon system Upgrade hydraulic load controllers and servo valves

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NAPV Upgrades

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  1. NAPV Upgrades Airport Pavement Working Group Ryan Rutter April 25, 2012

  2. NAPTV Upgrades: • Installation of hydraulic oil heaters • Installation of redundant fiber optic communications cable and supporting festoon system • Upgrade hydraulic load controllers and servo valves • Regenerative Braking Study

  3. NAPTV Upgrades – Hydraulic Oil Heater Installation: • Installed to optimize hydraulic load performance • Gives best response for test results • Reduce system start-up time

  4. NAPTV Upgrades – Fiber Optic Cable and Festoon System: • Installed to provide redundant communications between carriages and control cab • Last cable break disabled NAPTV and delayed testing for approximately 2 weeks.

  5. NAPTV Upgrades – Hydraulic Load Controllers and Servo Valves: • Upgrade existing Programmable Logic Controllers (PLCs) with Delta Motion Controllers • Currently running a Delta Motion Controller on Carriage 2, Module 5 along with a new MOOG digital servo valve. • Uses a laser range finder to capture the test pavement elevations every 6 inches for preemptive input to the Delta Controller. • Result is much better control of the hydraulic load over changing test pavement surface. • Article published in Control Engineering Magazine in December 2011 • Remaining load modules scheduled for upgrade towards the end of the summer 2012.

  6. NAPTV Upgrades – Regenerative Braking Study • Investigation into the feasibility of using regenerative braking on the NAPTV. • Also addresses the use of dynamic braking which is essentially replacing use of the mechanical brakes by putting the drive motors in reverse. • Mechanical brake use can be greatly reduced especially during automatic vehicle operation at reduced speeds. • ONExia provided feasibility study which gave a plan on replacement of the current 15 year old variable frequency drives (VFD) with new VFD’s, implementation costs, and start up costs.

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