A Two-Level Computer Control of Biaxial Shaking Table Using Three-Variable Local Controllers

Abstract This paper gives a presentation of the investigation for the development and implementation Of a two-level, computer control system for a 35 ton bi-axial shaking table with electro-hydraulic actuators. The design, selection, installing and integration of all the sub-systems into an integral system that actually performs simulations of earthquake and other multi—purpose vibrations is a multi-disciplinary research process. Investigations for application of advanced control concepts, modelling, identification and simulation, developing computer software, implementation and practical testing of the system are discussed. Practical results from the viewpoint both, the control and the systems engineering are presented and discussed with respect to the objective for carrying out complex dynamic and seismic test in the field of experimental mechanics. Current status and future developments are indicated.