The configuration of shake tables can be classified based on:

• axis - uniaxial, biaxial or multi-axial
• drive – hydraulic, pneumatic, servo-electric or electro-magnetic driven
• configuration - Hexapod like Stewart Table or Orthogonal Shake Table
• points of excitation - single point single component, single point multiple components, single component multiple points

Features :

• Modular support structure: functionality verification at BISS premise and quick installation at site.
• Effective machine foundation to limit vibration transmission.
• Backlash-free universal joints to connect actuators to table and support structure.
• Multi-channel multi-station control system to simultaneously control:

(a) actuators in MAST




(b) tables for multi-point excitation.

• Auto-calibration: linear encoders with 10-micron resolution or better used with actuators for displacement measurement and control. This arrangement is insensitive to adverse environmental changes.
• Real-time computation of velocity and acceleration from the linear encoder requires no additional requirement for sensors on actuator or reference table for velocity and acceleration measurements.
• Real-time application software for generation of various test waveforms: (a) harmonic waveforms (sine, triangular, square); (b) recorded time history; (c) sine-on-sine; (d) sine-sweep; (e) random signal (stationary, non-stationary).
• Delta-P and acceleration control stabilization respectively to overcome issues with oil-column resonance and test structural resonance.
• The test system can be used with remote test status and health monitoring packages.