Optimal Design and Hybrid Control for the Electro-Hydraulic Dual-Shaking Table System
Open Access
- 5 August 2016
- journal article
- research article
- Published by MDPI AG in Applied Sciences
- Vol. 6 (8), 220
- https://doi.org/10.3390/app6080220
Abstract
This paper is to develop an optimal electro-hydraulic dual-shaking table system with high waveform replication precision. The parameters of hydraulic cylinders, servo valves, hydraulic supply power and gravity balance system are designed and optimized in detail. To improve synchronization and tracking control precision, a hybrid control strategy is proposed. The cross-coupled control using a novel based on sliding mode control based on adaptive reaching law (ASMC), which can adaptively tune the parameters of sliding mode control (SMC), is proposed to reduce the synchronization error. To improve the tracking performance, the observer-based inverse control scheme combining the feed-forward inverse model controller and disturbance observer is proposed. The system model is identified applying the recursive least squares (RLS) algorithm and then the feed-forward inverse controller is designed based on zero phase error tracking controller (ZPETC) technique. To compensate disturbance and model errors, disturbance observer is used cooperating with the designed inverse controller. The combination of the novel ASMC cross-coupled controller and proposed observer-based inverse controller can improve the control precision noticeably. The dual-shaking table experiment system is built and various experiments are performed. The experimental results indicate that the developed system with the proposed hybrid control strategy is feasible and efficient and can reduce the tracking errors to 25% and synchronization error to 16% compared with traditional control schemes.This publication has 39 references indexed in Scilit:
- Shake table tests for seismic assessment of suspended continuous ceilingsBulletin of Earthquake Engineering, 2012
- Analysis and comparison of three discrete-time feedforward model-inverse control techniques for nonminimum-phase systemsMechatronics, 2012
- Tracking control of an electro-hydraulic shaking table system using a combined feedforward inverse model and adaptive inverse control for real-time testingProceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering, 2011
- The development of shaking tables–A historical noteEarthquake Engineering & Structural Dynamics, 2011
- A general co-ordinate transformation framework for multi-axis motion control with applications in the testing industryControl Engineering Practice, 2010
- Shake-table experiment on reinforced concrete structure containing masonry infill wallEarthquake Engineering & Structural Dynamics, 2006
- An adaptive H/sup ∞/ tracking control for a class of nonlinear multiple-input multiple-output (MIMO) systemsIEEE Transactions on Automatic Control, 2001
- Disturbance observer and feedforward design for a high-speed direct-drive positioning tableIEEE Transactions on Control Systems Technology, 1999
- Decentralized adaptive fuzzy control of robot manipulatorsIEEE Transactions on Systems, Man, and Cybernetics, Part B (Cybernetics), 1998
- The steady-state invertibility and feedforward control of linear time-invariant systemsIEEE Transactions on Automatic Control, 1976