Large-scale real-time hybrid simulation involving multiple experimental substructures and adaptive actuator delay compensation

2012 ◽  
Vol 41 (3) ◽  
pp. 549-569 ◽  
Author(s):  
Cheng Chen ◽  
James M. Ricles
Keyword(s):  
Real Time ◽  
Large Scale ◽  
Hybrid Simulation ◽  
Delay Compensation

scholarly journals Kalman Filter-Based Adaptive Delay Compensation for Benchmark Problem in Real-Time Hybrid Simulation

2020 ◽  
Vol 10 (20) ◽  
pp. 7101
Author(s):  
Xizhan Ning ◽  
Zhen Wang ◽  
Bin Wu
Keyword(s):  
Kalman Filter ◽  
Time Delay ◽  
Real Time ◽  
Control Plant ◽  
Hybrid Simulation ◽  
Time Varying ◽  
Transfer System ◽  
Benchmark Problem ◽  
Delay Compensation ◽  
Comparison Results

Real-time hybrid simulation (RTHS) is a versatile, effective, and promising experimental method used to evaluate the structural performance under dynamic loads. In RTHS, the emulated structure is divided into a numerically simulated substructure (NS) and a physically tested substructure (PS), and a transfer system is used to ensure the force equilibrium and deformation compatibility between the substructures. Owing to the inherent dynamics of the PS and transfer system (referred to as a control plant in this study), there is a time-delay between the displacement command and measurement. This causes de-synchronization between the boundary of the PS and NS, and affects the stability and accuracy of the RTHS. In this study, a Kalman filter-based adaptive delay compensation (KF-ADC) method is proposed to address this issue. In this novel method, the control plant is represented by a discrete-time model, whose coefficients are time-varying and are estimated online by the KF using the displacement commands and measurements. Based on this time-varying model, the delay compensator is constructed employing the desired displacements. The KF performance is investigated theoretically and numerically. To assess the performance of the proposed strategy, a series of virtual RTHSs are performed on the Benchmark problem in RTHS, which was based on an actual experimental system. Meanwhile, several promising delay-compensation strategies are employed for comparison. Results reveal that the proposed time-delay compensation method effectively enhances the accuracy, stability, and robustness of RTHS.

Testing Platform and Delay Compensation Methods for Distributed Real-Time Hybrid Simulation

2020 ◽  
Vol 44 (6) ◽  
pp. 787-805
Author(s):  
H. L. Sadraddin ◽  
M. Cinar ◽  
X. Shao ◽  
M. Ahmed
Keyword(s):  
Real Time ◽  
Hybrid Simulation ◽  
Delay Compensation ◽  
Testing Platform ◽  
Compensation Methods

Large-Scale Real-Time Hybrid Simulation for Evaluation of Advanced Damping System Performance

2015 ◽  
Vol 141 (6) ◽  
pp. 04014150 ◽  
Author(s):  
Anthony Friedman ◽  
Shirley J. Dyke ◽  
Brian Phillips ◽  
Ryan Ahn ◽  
Baiping Dong ◽  
...  
Keyword(s):  
Real Time ◽  
System Performance ◽  
Large Scale ◽  
Hybrid Simulation
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