Affordable Shake Table: Shakebot for Engineering Research

Shake tables provide a critical tool for simulating earthquake events and testing the response of structures to seismic forces. However, most existing shake tables are either prohibitively expensive or proprietary, limiting their accessibility for educational and research purposes. To bridge this gap, we present Shakebot, a low-cost, open-source shake table designed specifically for engineering research and education.

Key Features of Shakebot

The Shakebot is built using affordable, high-precision components. This approach not only keeps the cost down but also ensures the reliability and accuracy needed for vibration testing. Here are some of the standout features:

  • Closed-Loop Stepper Motor: The Shakebot uses a closed-loop stepper motor for precise actuation. This motor enables the table to achieve a maximum horizontal acceleration of 11.8 m/s² (1.2 g) and a velocity of 0.5 m/s, supporting specimens up to 2 kg.
  • Toothed Belt Transmission: A toothed belt is used for motion transmission, ensuring smooth and consistent movements during tests.
  • Accelerometer: Shakebot is equipped with an accelerometer enabling detailed bed motion estimation and data collection.
  • Open-Source Software with ROS: The shake table runs on the Robot Operating System (ROS), allowing for modular software integration and facilitating easy transition from simulation to physical experiments.
  • Accessible and User-Friendly: The Shakebot’s low cost and simple setup make it ideal for students, educators, and researchers, especially in low-resource settings.

Application in Precariously Balanced Rocks (PBR) Research

One of the most exciting applications of the Shakebot is in the study of Precariously Balanced Rocks (PBRs) by CALTECH. PBRs serve as natural markers that indicate the absence of significant seismic activity in an area. With the Shakebot, the researchers validated the simulations through physical testing.

By reusing the control programs developed in ROS, the CALTECH researches ensured that the ground motions used in simulations are identical to those applied in the physical experiments. This consistency was vital for validating the accuracy of the simulation and ensuring reliable results in both virtual and real-world settings.

Why Choose Shakebot?

  • Affordable: Built using readily available components, Shakebot offers a high-performance solution at a fraction of the cost of traditional shake tables.
  • Open-Source: With ROS-based software, Shakebot allows for extensive customization, making it suitable for a wide range of seismic research applications.
  • Versatile: Whether you are testing small-scale structures or conducting PBR studies, Shakebot is a highly flexible tool for both education and research.

QuakeLogic Is Proud to Offer Shakebot

At QuakeLogic, we are committed to providing innovative seismic monitoring and testing solutions. Shakebot is a proud addition to our product lineup, designed to meet the needs of researchers, educators, and engineers seeking an affordable yet high-precision shake table.

About QuakeLogic

QuakeLogic is a leading provider of advanced seismic monitoring solutions, offering a range of products and services designed to enhance the accuracy and efficiency of testing, data acquisition, and analysis.

Contact Information:

For more information about our products and services, please visit our website or contact our sales team. We are here to help you with all your testing and monitoring needs.

With Shakebot, QuakeLogic continues its mission to democratize earthquake engineering tools, ensuring that vital seismic research and education are accessible to everyone.

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