Overview

The Shake Table II consists of a top stage driven by a powerful motor that allows it to achieve an acceleration of 2.5 g when loaded with a 7.5 kg mass. The stage has a travel of 15.2 cm and rides on two ground-hardened metal shafts using linear bearings, which allows for smooth linear motion with low path deflection. The Shake Table’s motor is a 400W high-powered 3-phase brushless DC actuator. The motor contains an embedded high-resolution encoder that allows the position of the stage to be measured with an effective linear resolution of 1.55 μm. An analog accelerometer mounted on the Shake Table II platform measures the acceleration of the stage directly.

  • Single-axis operation
  • High-resolution encoder
  • Ball-screw mechanism for robust actuation
  • Easy integration of user-built structures, third-party sensors and actuators
  • Designed and built for the University Consortium on Instructional Shake Tables
  • Control using standalone Shake Table software or with QUARC for MATLAB®/Simulink®
  • Supports scaling and playback of earthquake data
  • Integrated safety features and limits
  • Modeling and transfer function representation
  • PID control
  • Bandwidth curves

The following additional components are required to complete your workstation, and are sold separately:

For Simulink

  • QUARC® add-on for MATLAB®/Simulink®
  • Quanser AMPAQ-PWM amplifier
  • One of the following DAQ devices:
    • Quanser Q8-USB
    • Quanser QPIDe

Product Details

Dimensions (H x L x W) 61 cm x 46 cm x 13 cm
Total mass 27.2 kg
Payload area (L x W) 46 cm x 46 cm
Maximum payload at 2.5 g¹ 7.5 kg
Maximum travel ± 7.6 cm
Operational bandwidth¹ 10 Hz
Maximum velocity (with 7.5 kg payoad)¹ 66.5 cm/s
Maximum acceleration (with 7.5 kg payoad)¹ 2.5 g
Lead screw pitch 1.27 cm/rev
Servomotor power 400 W
Amplifier maximum continuous current 12.5 A
Motor maximum torque 7.82 N.m
Lead screw encoder resolution (in quadrature) 8192 counts/rev
Effective stage position resolution (in quadrature) 1.55 μm/count
Accelerometer range ± 49 m/s²
Accelerometer sensitivity 1.0 g/V

¹ Please contact Quanser for full operational bandwidth specifications.

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