Teleoperation and Teleparticipation of Instructional Shake Tables Using the NEES Cyberinfrastructure S.J. Dyke 1, Z. Jiang 2, R. Christenson 2, X. Gao 1 and S. Courter 3 1 Washington University in St. Louis 2 University of Connecticut 3 University of Winsconsin iCEER 2007 Melbourne, Australia

Background: UCIST University of Alaska – Fairbanks University of Hawaii UC San Diego UCLA UC-Irvine Univ. of Nevada – Las Vegas Univ. or Nevada - Reno UC Davis Stanford Oregon State Univ. San Jose State Univ. Penn State UIUC Southern Illinois Univ. - Edwardsville Virginia Tech Washington Univ. Notre Dame Univ. of Utah CalPoly Florida A& M Currently over 100 universities internationally are members !

NEES Resources Field Equipment Laboratory Equipment Remote Users Remote Users: ( K-12 Faculty and Students) Instrumented Structures and Sites Leading Edge Computation Curated Data Repository Laboratory Equipment Global Connections ( Faculty, Students, Practitioners) Simulation Tools Repository

Existing state-of-the-art cyberinfrastructure tools developed by NEESit, the technical support and development component of NEES, have been developed recently for teleparticipation and teleoperation. We plan to take advantage of these capabilities to educate the next generation of civil engineers! Introduction

Outline Objectives of the Collaboratory Lab Station Components –Equipment –NEES Implementation Instructional Materials Available –Freshman Level Undergraduate Module –Senior Level Structural Dynamics Experiments –Evaluation Plan Closing

Objectives of the Collaboratory To provide engineering students –an understanding of structural dynamics –experience with modern laboratory equipment and instrumentation –exposure to NEES and the latest capabilities regarding remote testing teleparticipation tools –provide a mechanism for training students to perform experiments –opportunities for K-12 outreach

Objectives of the Collaboratory 2 Lead Institutions –develop 2 initial exercises –evaluation & adapt 5 Deployment Sites –implement 2 exercise –develop new exercises Available to users

Lab Station: Overview

Lab Station: Activities University of California, Berkeley Model Shake--Aftermath

NEES: Teleparticipation Viewing and analysis of streaming data and video over the internet Enable researchers to remotely participate experiments Allow for classroom demonstrations and hands-on experimentation on physical structures

NEES: Teleoperation Remotely controlling the UCIST shake table using the NEES cyberinfrastructure tools Facilitate new testing methods such as distributed hybrid testing To allow remote user (students) to control hands-on experimentation on physical structures

NEES Implementation At the University of Connecticut

MATLAB / Simulink / WinCon UCIST PC (NTCP for MATLAB Machine) Remote PC NTCP Client UCIST Shake Table Web Camera RDV NTCP ServerWebDaemon Data Turbine PC RBNB NEES Implementation

Introduction to Earthquake Engineering: Spring 2007 Freshman Engineering module developed at the University of Connecticut

Instructional Materials Students learn necessary mathematics to study the forced and free vibration of a single-degree-of-freedom structure A 1-story seismically excited shear frame is used to apply their new knowledge

Instructional Materials Overview (Freshman Level 3 weeks) –Earthquake Engineering Introduction –SDOF Equations of Motion –Programming in Matlab –NEES Introduction –Teleparticipation & Teleoperation of Actual Experiment Each student is required to submit weekly homeworks and a final lab report including a discussion of observations and results

Two Experiments Developed for Structural Dynamics: Fall 2007 Junior or Senior Level Experiments developed at Washington University in St. Louis

Instructional Materials EXPERIMENT 1: Experimentally obtain frequency response functions (FRF) –SDOF building model –Run a series of sinusoidal excitations –Compute magnitude and phase of FRF –Estimate viscous damping and observe effect

Instructional Materials EXPERIMENT 2: Design Vibration Absorber –Two DOF building model –Passive device to reduce responses –Design length of pendulum and additional mass –Verify control results using teleoperation

Instructional Materials Evaluation & Feedback –On-line surveys conducted to obtain student input –Evaluation expert is part of the project Comments –“[It] Was very hands on, and many people learn better by doing and seeing than just calculations” –“It was a very interesting experience. The fact that you could manipulate a structure in another building across campus from you room is amazing.”

Benefits to the Students More flexible and complex experiments using multiple sites Experience with cyberinfrastructure Flexible scheduling of experiments Access for students at a larger number of universities to participate in advanced experiments Tool to excite K-12 students about engineering

Current Status Both lead institutions and 2 of the 5 deployment sites have full teleparticipation and teleoperation capabilities. Several new experiments are under development. Three additional deployment sites are at the stage of setting up necessary communication tools. Other partners in this deployment (including international sites) are welcome to join!

Acknowledgments NSF DUE (CCLI Program) NEESinc and NEESit NSF funding for UCIST ( ) –Support for UCIST from NSF Grant (DUE ) –Mid-America Earthquake Center Quanser Consulting

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