Title: Advanced Servo-Hydraulic Control and Real-Time Testing of Damped Structures (NEES-2009-0711)

Year Of Curation: 2011

Description: The Real-time Multi-directional (RTMD) Earthquake Simulation Testing Facility has recently been commissioned at the ATLSS Center. This facility has state-of-the-art servo-hydraulic equipment (servo-valves, accumulation and piping systems). The control system for this equipment is a digital system with a PID control law programmed on a DSP. A recent study at Lehigh University has established that PID control alone cannot be reliably used for real-time testing of structural components or systems. This is because the overshoot and steady state error in the target displacement of the actuator is too large and a latency in feedback command exists that does not enable accurate control of an actuator under high rates of loading resembling earthquakes.

Award: PITA

PIs & CoPIs: James Ricles

Dates: October 01, 2006 - December 31, 2008

Organizations: Lehigh University, PA, United States

Facilities: Lehigh University, PA, United States

Sponsor: PITA

Keywords: Structural Damping, Real-Time Hybrid Simulation, Actuator Control

Publications: 

"Servo-Hydraulic Actuator Control for Real-Time Hybrid Simulation"

"A Tracking Error-Based Adaptive Compensation Scheme for Real- Time Hybrid Simulation"

• James Ricles (2017), "Advanced Servo-Hydraulic Control and Real-Time Testing of Damped Structures (NEES-2009-0711)," https://datacenterhub.org/deedsdv/publications/view/432.